diff options
Diffstat (limited to 'Year_1')
107 files changed, 8039 insertions, 0 deletions
diff --git a/Year_1/Computer_Architecture/biggest.asm b/Year_1/Computer_Architecture/biggest.asm new file mode 100644 index 0000000..a604350 --- /dev/null +++ b/Year_1/Computer_Architecture/biggest.asm @@ -0,0 +1,31 @@ +array dcd 3, 6, 10, 55, -1, 120, 10, -2, 0, 0, 13 +arr_n dcd 12 + + mov r0, #arr_n + ldr r1, [r0] ; r1 = grandezza dell'array + + mov r0, #array ; r0 = array[0] + ldr r3, [r0] ; r3 = numero maggiore + +loop + cmp r1, #0 + beq loop_end + + ldr r2, [r0] + + cmp r2, r3 + bgt assign_gt + + add r0, r0, #4 + +loop_back + sub r1, r1, #1 + + b loop + +assign_gt + mov r3, r2 + b loop_back + +loop_end + end diff --git a/Year_1/Computer_Architecture/counter_numbers.asm b/Year_1/Computer_Architecture/counter_numbers.asm new file mode 100644 index 0000000..e48f1e3 --- /dev/null +++ b/Year_1/Computer_Architecture/counter_numbers.asm @@ -0,0 +1,33 @@ +array dcd 1, 24, 0, 12, 24, 2, 24, 24 +arr_n dcd 8 +elem dcd 24 + + mov r0, #arr_n + ldr r1, [r0] ; r1 = lunghezza array + + mov r0, #elem + ldr r2, [r0] ; r2 = elemento da controllare + + mov r0, #array + mov r4, #0 ; r4 = contatore delle occorrenze + +loop + cmp r1, #0 + beq loop_end + + ldr r3, [r0] ; r3 = valore in cui punta r0 + cmp r3, r2 + beq found + +loop_back + add r0, r0, #4 ; r0 punta alla nuova word + sub r1, r1, #1 + + b loop + +found + add r4, r4, #1 + b loop_back + +loop_end + end diff --git a/Year_1/Computer_Architecture/division.asm b/Year_1/Computer_Architecture/division.asm new file mode 100644 index 0000000..6b9f80a --- /dev/null +++ b/Year_1/Computer_Architecture/division.asm @@ -0,0 +1,23 @@ +op_a dcd 42 +op_b dcd 6 + + mov r0, #op_a + ldr r1, [r0] + + mov r0, #op_b + ldr r2, [r0] + + mov r0, #0 + +loop + cmp r1, r2 + blt loop_end + + sub r1, r1, r2 + add r0, r0, #1 + + b loop + +loop_end + + end diff --git a/Year_1/Computer_Architecture/find_elem.asm b/Year_1/Computer_Architecture/find_elem.asm new file mode 100644 index 0000000..db7dc35 --- /dev/null +++ b/Year_1/Computer_Architecture/find_elem.asm @@ -0,0 +1,34 @@ +array dcd 1, 3, 2, 4, 0 +arr_n dcd 5 +elem dcd 3 + + mov r0, #arr_n + ldr r1, [r0] ; r1 <- lunghezza array + + mov r0, #elem + ldr r2, [r0] ; r2 <- elemento da cercare + + mov r0, #array ; r0 <- puntatore al primo elemento dell'array + +loop + cmp r1, #0 + beq loop_end + + ldr r3, [r0] + + cmp r3, r2 + beq found + + add r0, r0, #4 + sub r1, r1, #1 + + + b loop + +found + mov r4, #0 ; r4 = 1, quindi trovato + end + +loop_end + mov r4, #1 ; r4 = 0, quindi non trovto + end diff --git a/Year_1/Computer_Architecture/lowest.asm b/Year_1/Computer_Architecture/lowest.asm new file mode 100644 index 0000000..3dccb4a --- /dev/null +++ b/Year_1/Computer_Architecture/lowest.asm @@ -0,0 +1,31 @@ +array dcd 3, 6, 10, 55, -1, 120, 10, -2, 0, 0, 13 +arr_n dcd 12 + + mov r0, #arr_n + ldr r1, [r0] ; r1 = grandezza dell'array + + mov r0, #array ; r0 = array[0] + ldr r3, [r0] ; r3 = numero maggiore + +loop + cmp r1, #0 + beq loop_end + + ldr r2, [r0] + + cmp r2, r3 + blt assign_lt + + add r0, r0, #4 + +loop_back + sub r1, r1, #1 + + b loop + +assign_lt + mov r3, r2 + b loop_back + +loop_end + end diff --git a/Year_1/Computer_Architecture/multiply.asm b/Year_1/Computer_Architecture/multiply.asm new file mode 100644 index 0000000..1635a6d --- /dev/null +++ b/Year_1/Computer_Architecture/multiply.asm @@ -0,0 +1,21 @@ +op_1 dcd 4 +op_2 dcd 10 + + mov r0, #op_1 + ldr r1, [r0] + + mov r0, #op_2 + ldr r2, [r0] + + mov r0, #0 + +loop + cmp r2, #0 + beq loop_end + + add r0, r0, r1 + sub r2, r2, #1 + b loop + +loop_end + end diff --git a/Year_1/Computer_Architecture/num_of_1s.asm b/Year_1/Computer_Architecture/num_of_1s.asm new file mode 100644 index 0000000..ffbd4f4 --- /dev/null +++ b/Year_1/Computer_Architecture/num_of_1s.asm @@ -0,0 +1,20 @@ +num dcd 27 ; 0b11011 + + mov r0, #num + ldr r0, [r0] + mov r2, r0 + + mov r1, #32 + +loop + and r4, r2, #1 + cmp r4, #1 + bne itszero + add r3, r3, #1 +itszero + lsr r2, r2, #1 + sub r1, r1, #1 + cmp r1, #0 + bne loop + + end diff --git a/Year_1/Computer_Architecture/odd_even_numbers.asm b/Year_1/Computer_Architecture/odd_even_numbers.asm new file mode 100644 index 0000000..996fd62 --- /dev/null +++ b/Year_1/Computer_Architecture/odd_even_numbers.asm @@ -0,0 +1,36 @@ +arr_n dcd 8 +array dcd 1, 2, 4, 6, -5, 8, 7, 3 +s_arr dcd 0 + + mov r0, #arr_n + ldr r0, [r0] + mov r1, r0 + + mov r4, #1 ; 0 = even, 1 = odd + mov r6, #0 ; number of elements on new sequence + + mov r2, #s_arr + + mov r1, #array + +loop + cmp r0, #0 + beq end_program + ldr r3, [r1], #4 + mov r5, r3 + + and r5, r3, #1 + cmp r5, r4 ; check if element stored in r3 is odd or even + beq data_store +subn_loop + sub r0, r0, #1 + b loop + +data_store + str r3, [r2], #4 + add r6, r6, #1 + b subn_loop + +end_program + str r6, [r2] + end diff --git a/Year_1/Computer_Architecture/subsequence_less_than_5.asm b/Year_1/Computer_Architecture/subsequence_less_than_5.asm new file mode 100644 index 0000000..3c266d5 --- /dev/null +++ b/Year_1/Computer_Architecture/subsequence_less_than_5.asm @@ -0,0 +1,30 @@ +arr_n dcd 6 +array dcd 3, 6, 7, 2, 9, 0 +s_arr dcd 1 + + mov r0, #arr_n + ldr r0, [r0] + mov r1, r0 + + mov r2, #s_arr + mov r1, #array + mov r4, #0 ; number of elements on new sequence + +loop + cmp r0, #0 + beq end_program + ldr r3, [r1], #4 + cmp r3, #5 ; number to compare + blt data_store +subn_loop + sub r0, r0, #1 + b loop + +data_store + str r3, [r2], #4 + add r4, r4, #1 + b subn_loop + +end_program + str r4, [r2] + end diff --git a/Year_1/Computer_Architecture/sum_n_nums.asm b/Year_1/Computer_Architecture/sum_n_nums.asm new file mode 100644 index 0000000..0efcedc --- /dev/null +++ b/Year_1/Computer_Architecture/sum_n_nums.asm @@ -0,0 +1,23 @@ +arr_1 dcd 3, 2, 1, 5 +a_len dcd 4 + + mov r0, #a_len + ldr r1, [r0] ; valore N, grandezza array + + mov r0, #arr_1 ; puntatore dell'array + ldr r2, [r0] ; primo valore dell'array + mov r3, #0 + +loop + cmp r1, #0 + beq loop_end + + add r3, r3, r2 + add r0, r0, #4 ; incrementa di un byte il puntatore dell'array + ldr r2, [r0] + + sub r1, r1, #1 + b loop + +loop_end + end diff --git a/Year_1/Computer_Architecture/vector_prod.asm b/Year_1/Computer_Architecture/vector_prod.asm new file mode 100644 index 0000000..cf5e4ef --- /dev/null +++ b/Year_1/Computer_Architecture/vector_prod.asm @@ -0,0 +1,103 @@ +array1 dcd 1, 3, 4, 1 +array2 dcd 1, 0, 2, 0 +arrayn dcd 4 + + mov r0, #arrayn + ldr r0, [r0] ; r0 = lunghezza array + + mov r1, #array1 ; r1 = puntatore al primo array + mov r2, #array2 ; r2 = puntatore al secondo array + +loop + cmp r0, #0 + beq loop_end + + ldr r3, [r1] ; r3 = valore a cui punta r1 + ldr r4, [r2] ; r4 = valore a cui punta r2 + + cmp r3, #0 ; se r3 è 0, la moltiplicazione sarà 0 + beq r3_store + blt after_neg3 ; se r3 è negativo, cambia il filtro a 1 +jp_before4 + cmp r4, #0 ; se r4 è 0, la moltiplicazione sarà 0 + beq r4_store + blt after_neg4 ; se r4 è negativo, controlla se il filtro è già 1, in caso lo cambia +jp_after4 + cmp r3, r4 ; confronta r3 e r4 per fare la moltiplicazione con ciclo minore + bgt mul_r3 + ble mul_r4 + +loop_back + add r1, r1, #4 ; incrementa i puntatori e decrementa contatore + add r2, r2, #4 + sub r0, r0, #1 + mov r6, #0 + + b loop + +after_neg3 + mvn r3, r3 + add r3, r3, #1 + mov r6, #1 + b jp_before4 + +restart_r6 + mov r6, #0 + b jp_afte4 + +after_neg4 + mvn r4, r4 + add r4, r4, #1 + cmp r6, #1 + beq restart_r6 ; re inserisce il valore 0 perché fa prodotto di due negativi + + mov r6, #1 + b jp_after4 + +neg3 + mvn r3, r3 + add r3, r3, #1 + add r5, r5, r3 + b loop_back + +r3_store + cmp r6, #1 + beq neg3 + str r3, [r1] + add r5, r5, r3 + b loop_back + +neg4 + mvn r4, r4 + add r4, r4, #1 + str r4, [r1] + add r5, r5, r4 + b loop_back + +r4_store + cmp r6, #1 + beq neg4 + str r4, [r1] + add r5, r5, r4 + b loop_back + +mul_r3 + cmp r4, #1 + ble r3_store + + add r3, r3, r3 + + sub r4, r4, #1 + b mul_r3 + +mul_r4 + cmp r3, #1 + ble r4_store + + add r4, r4, r4 + + sub r3, r3, #1 + b mul_r4 + +loop_end + end diff --git a/Year_1/Programming_1/ex01.cc b/Year_1/Programming_1/ex01.cc new file mode 100644 index 0000000..9183dec --- /dev/null +++ b/Year_1/Programming_1/ex01.cc @@ -0,0 +1,42 @@ +#include <iostream> +#include <algorithm> +#include <vector> +#define K 2 +#define N 3 + +using namespace std; + +template<int KK, int NN> +bool func(int (&a)[KK][NN][NN], int w) { + vector<int> list; + for(int i = 0; i < KK; ++i) { + list.clear(); + for(int j = 0; j < NN; ++j) + list.push_back(a[i][j][j]); + + auto mm = minmax_element(begin(list), end(list)); + float media = (static_cast<float>(*mm.first)+static_cast<float>(*mm.second))/2; + if(media <= w) + return true; + } + + return false; +} + +int main() { + int a[K][N][N] = { + { + {1, 2, 30}, + {1, 80, 3}, + {1, 2, 3}, + }, + { + {1, 2, 30}, + {1, 20, 3}, + {1, 2, 3}, + }}; + + cout << func(a, 5); + + return 0; +} diff --git a/Year_1/Programming_1/ex08.cc b/Year_1/Programming_1/ex08.cc new file mode 100644 index 0000000..fdfea92 --- /dev/null +++ b/Year_1/Programming_1/ex08.cc @@ -0,0 +1,36 @@ +#include <iostream> +#include <stdio.h> +#define N 3 +#define M 5 + +using namespace std; + +bool func(int A[N][M], short k, short w) { + short counter = 0; + for(int i = 0; i < M; ++i) { + short t_counter = 0; + for(int j = 1; j < N; ++j) { + if(A[j][i] < A[j-1][i]) + break; + else + ++t_counter; + } + + if(t_counter >= k) + ++counter; + } + + return counter >= w; +} + +int main() { + int array[N][M] = { + {5, 7, 9, 10, 5}, + {10, 2, 3, 4, 10}, + {16, 34, 21, 23, 1} + }; + + cout << func(array, 2, 1) << endl; + + return 0; +} diff --git a/Year_1/Programming_1/ex10_07_18.cc b/Year_1/Programming_1/ex10_07_18.cc new file mode 100644 index 0000000..092b184 --- /dev/null +++ b/Year_1/Programming_1/ex10_07_18.cc @@ -0,0 +1,45 @@ +#include<iostream> +#include<vector> + +#define n 3 + +using namespace std; + +bool func(char (*A)[n]) { + bool check{false}; + char str[n]; + + for(int i = 0; i < n; ++i) { + str[i] = A[i][i]; + } + + short n_check{0}; + for(int i = 0; i < n; ++i) { + short index{0}; + for(int j = 0; j < n; ++j) { + if(A[j][i] != str[index++]) { + break; + } + ++n_check; + } + if(n_check == n) { + check = true; + break; + } + } + + return check; +} + + +int main() { + char A[3][3] = { + {'a', 'b', 'c'}, + {'b', 'b', 'c'}, + {'c', 'b', 'c'}, + }; + + cout << func(&A[0]); + + return 0; +} diff --git a/Year_1/Programming_1/ex12.cc b/Year_1/Programming_1/ex12.cc new file mode 100644 index 0000000..ab20cef --- /dev/null +++ b/Year_1/Programming_1/ex12.cc @@ -0,0 +1,50 @@ +#include <iostream> +#include <vector> +#define N 3 +using namespace std; + +string* func(string a[N][N], short k, string s) { + string* sn = new string[N]; + vector<string> l; + + // Diagonale secondaria + for(int i = N-1, j = 0; i >= 0; --i, ++j) { + l.push_back(a[i][j]); + } + + bool d2 = true; + for(auto const& i : l) { + if(i.length() < k || i.find(s) != 0) { + d2 = false; + break; + } + } + + if(d2) { + for(int i = 0; i < N; ++i) { + sn[i] = l.at(i); + } + } else { + for(int i = 0; i < N; ++i) { + sn[i] = a[i][i]; + } + } + + return sn; +} + +int main() { + string a[N][N] = { + {"aab", "bbc", "4de"}, + {"xyb", "bbc", "yz3"}, + {"47x", "1y_", "23g"}, + }; + string* x = func(a, 1, "4"); + + for(int i = 0; i < N; ++i) + cout << x[i] << ' '; + + cout << endl; + + return 0; +} diff --git a/Year_1/Programming_1/ex13.cc b/Year_1/Programming_1/ex13.cc new file mode 100644 index 0000000..f9f19fa --- /dev/null +++ b/Year_1/Programming_1/ex13.cc @@ -0,0 +1,45 @@ +#include <iostream> +#include <memory> +#include <algorithm> +#include <vector> +using namespace std; + +template<int N, int K> +unique_ptr<double[]> func(int (&A)[K][N], int (&B)[N][K]) { + auto arr = unique_ptr<double[]>(new double{K}); + for(int i = 0; i < K; ++i) { + vector<int> t; + int sum = 0; + for(int j = 0; j < N; ++j) { + t.push_back(B[j][i]); + sum+=A[i][j]; + } + + double media = static_cast<double>(sum)/N; + auto min_num = min_element(begin(t), end(t)); + arr[i] = media - *min_num; + } + + return arr; +} + +int main() { + const int N2 = 3, K2 = 2; + int A[K2][N2] = { + {3, 7, 10}, + {5, 12, 32}, + }; + int B[N2][K2] = { + {12, 10}, + {15, 17}, + {8, 0}, + }; + auto x = func(A, B); + + for(int i = 0; i < K2; ++i) + cout << x[i] << ' '; + + cout << endl; + + return 0; +} diff --git a/Year_1/Programming_1/ex15.cc b/Year_1/Programming_1/ex15.cc new file mode 100644 index 0000000..525882c --- /dev/null +++ b/Year_1/Programming_1/ex15.cc @@ -0,0 +1,41 @@ +#include <iostream> +using namespace std; + +template<int N, int M> +unique_ptr<string[]> func(string (&A)[N][M], short (&B)[N][M]) { + auto arr = unique_ptr<string[]>(new string[N]); + + for(int i = 0; i < N; ++i) { + short sum{0}; + string tmp{""}; + for(int j = 0; j < M; ++j) { + sum+=B[i][j]; + tmp+=A[i][j]; + } + + arr[i] = tmp.length() >= sum ? tmp : ""; + } + + return arr; +} + +int main() { + string A[2][3] = { + {"aab", "aA", "314"}, + {"1334", "5715", "__"}, + }; + + short B[2][3] = { + {2, 3, 0}, + {1, 15, 7} + }; + + auto x = func(A, B); + + for(int i = 0; i < 2; ++i) + cout << x[i] << ' '; + + cout << endl; + + return 0; +} diff --git a/Year_1/Programming_1/ex16.cc b/Year_1/Programming_1/ex16.cc new file mode 100644 index 0000000..4c2b74a --- /dev/null +++ b/Year_1/Programming_1/ex16.cc @@ -0,0 +1,41 @@ +#include <iostream> + +using namespace std; + +template<int N, int M> +short func(string (&S)[N][M], short (&B)[M]) { + short index{0}; + short ex_count{0}; + short i{0}; + + for(auto const& row : S) { + short count{0}; + if(i > M) + break; + + for(auto const& col : row) { + if(col.length() <= B[i]) + ++count; + } + + if(count > ex_count) { + index = i; + ex_count = count; + } + ++i; + } + + return index; +} + +int main() { + string t[2][3]{ + {"greeeeee", "aaaaaaa", "bbbbbb"}, + {"abc", "sooca", "icsdi"}, + }; + short bb[3]{3, 10}; + short x = func(t, bb); + + cout << x << endl; + return 0; +} diff --git a/Year_1/Programming_1/ex17.cc b/Year_1/Programming_1/ex17.cc new file mode 100644 index 0000000..9eee61d --- /dev/null +++ b/Year_1/Programming_1/ex17.cc @@ -0,0 +1,43 @@ +#include <iostream> + +using namespace std; + +template<int N, int M> +short* func(string (&S)[N][M], char (&C)[N], char (&D)[N]) { + short* a = new short[N]; + + for(int i = 0; i < N; ++i) { + short counter = 0; + for(auto const& rows_string : S[i]) { + if(rows_string.length() > 2) { + if(rows_string.at(0) == C[i] + && rows_string.at(rows_string.length()-1) == D[i]) + ++counter; + } + } + + a[i] = counter; + } + + + return a; +} + +int main() { + string t[3][3]{ + {"suca", "we", "soia"}, + {"omg", "ooohygodg", "onopg"}, + {"", "mii", ""}, + }; + + char c[3] = {'s', 'o', 'a'}; + char d[3] = {'a', 'g', 'a'}; + + short* n = func(t, c, d); + + for(int i = 0; i < 3; ++i) { + cout << n[i] << ' '; + } + + return 0; +} diff --git a/Year_1/Programming_1/ex1_03_12_19.cc b/Year_1/Programming_1/ex1_03_12_19.cc new file mode 100644 index 0000000..8f9bed7 --- /dev/null +++ b/Year_1/Programming_1/ex1_03_12_19.cc @@ -0,0 +1,65 @@ +#include <iostream> + +using namespace std; +/* +2 3 4 5 +1 2 3 4 +1 2 3 0 + +3 x 4 + +5 2 1 0 +*/ + +template<int N, int M> +bool* func(unsigned int (&K)[N][M], double (&D)[M]) { + bool* A = new bool[M]; + for(int i = 0; i < M; ++i) + A[i] = false; + + for(int i = 0; i < M; ++i) { + int sum = 0; + for(int j = 0; j < N; ++j) { + sum+=K[j][i]; + } + + if(static_cast<double>(sum)/static_cast<double>(M) > D[i]) { + A[i] = true; + } + } + + return A; +} + +int main() { + // TODO: test + unsigned int A[3][4] = { + {2, 3, 4, 5}, + {1, 2, 3, 4}, + {1, 2, 3, 0} + }; + + double D[4] = {5., 2.2, 1.1, 0.50}; + + auto a = func(A, D); + for(int i = 0; i < 4; ++i) + cout << a[i] << ' '; + + cout << endl; + + unsigned int A2[3][4] = { + {2, 3, 4, 5}, + {1, 2, 0, 4}, + {1, 2, 0, 0} + }; + + double D2[4] = {5., 2.2, 15.1, 18.50}; + + auto a2 = func(A2, D2); + for(int i = 0; i < 4; ++i) + cout << a2[i] << ' '; + + cout << endl; + + return 0; +} diff --git a/Year_1/Programming_1/ex1_04_12_19.cc b/Year_1/Programming_1/ex1_04_12_19.cc new file mode 100644 index 0000000..3d352f1 --- /dev/null +++ b/Year_1/Programming_1/ex1_04_12_19.cc @@ -0,0 +1,39 @@ +#include <iostream> + +using namespace std; + +template<int N, int M> +short func(int (&A)[N][M], double d1, double d2, short s) { + short result{0}; + + for(int i = 0; i < M; ++i) { + short temp_result{0}; + for(int j = 0; j < N-1; ++j) { + if(temp_result >= s) + continue; + + double div = static_cast<double>(A[j][i]) / static_cast<double>(A[j+1][i]); + if(div >= d1 && div <= d2) + temp_result++; + } + + if(temp_result >= s) + result++; + } + + return result; +} + +int main() { + int a1[5][2] = { + {15, 100}, + {15, 100}, + {10, 100}, + {10, 10}, + {10, 30}, + }; + + cout << func(a1, 0.3, 1.9, 2) << endl; + + return 0; +} diff --git a/Year_1/Programming_1/ex1_06_12_18.cc b/Year_1/Programming_1/ex1_06_12_18.cc new file mode 100644 index 0000000..b16748f --- /dev/null +++ b/Year_1/Programming_1/ex1_06_12_18.cc @@ -0,0 +1,35 @@ +#include<iostream> + +using namespace std; + +template<int N> +bool func(int (&A)[N][N], double w) { + int sumDiagonale{}; + for(int i = 0; i < N; ++i) sumDiagonale+=A[i][i]; + + for(int i = 0; i < N; ++i) { + int sumCol{}; + for(int j = 0; j < N; ++j) { + sumCol+=A[j][i]; + } + + if(static_cast<double>(sumCol/sumDiagonale) > w) + return true; + } + + + return false; +} + +int main() { + int A[4][4] = { + {1, 2, 3, 4}, + {1, 2, 3, 4}, + {1, 2, 3, 4}, + {1, 2, 3, 4}, + }; + + cout << func(A, 4.5); + + return 0; +} diff --git a/Year_1/Programming_1/ex1_08_03_18.cc b/Year_1/Programming_1/ex1_08_03_18.cc new file mode 100644 index 0000000..9942714 --- /dev/null +++ b/Year_1/Programming_1/ex1_08_03_18.cc @@ -0,0 +1,33 @@ +#include<iostream> + +#define n 3 + +using namespace std; + +bool func(int (*A)[n]) { + /* + 0 1 n-2 n-1 + 0 | x | x | x | x | + 1 | x | x | x | x | + n-2 | x | x | x | x | + n-1 | x | x | x | x | + */ + + int sum{}; // Inizializza sum a 0 + for(int i = 1, j = n-1; j > 0; ++i, j--) { + sum+=A[j][i]; + } + + return (sum % n == 0); +} + +int main() { + int A[n][n] = { + {1, 2, 3, }, + {1, 2, 3, }, + {1, 3, 0, }, + }; + + cout << func(&A[0]); + return 0; +} diff --git a/Year_1/Programming_1/ex1_18_02_19.cc b/Year_1/Programming_1/ex1_18_02_19.cc new file mode 100644 index 0000000..a1bfc91 --- /dev/null +++ b/Year_1/Programming_1/ex1_18_02_19.cc @@ -0,0 +1,33 @@ +#include<iostream> + +using namespace std; + +template<int N, int M> +bool func(int (&A)[N][M], double w, double v) { + if(w > v) return false; + + for(int i = 0; i < M; ++i) { + double sum{}; + for(int j = 0; j < N; ++j) { + sum+=A[j][i]; + } + + double media = sum / static_cast<double>(N); + + if(media >= w && media <= v) return true; + } + + return false; +} + +int main() { + int M[3][4] = { + {1, 2, 3, 4}, + {1, 2, 3, 5,}, + {1, 2, 3, 6}, + }; + + cout << func(M, 0.1, 0.2); + + return 0; +} diff --git a/Year_1/Programming_1/ex1_23_04_19.cc b/Year_1/Programming_1/ex1_23_04_19.cc new file mode 100644 index 0000000..c977ece --- /dev/null +++ b/Year_1/Programming_1/ex1_23_04_19.cc @@ -0,0 +1,35 @@ +#include<iostream> +#define N 4 +#define M 3 + +using namespace std; + +double func(string (*S)[M], string s1, short k) { + if(k < 1 || k > M) return -1; + + short counter{}; + short c_strings{}; + + for(int i = 0; i < N; ++i) { + for(int j = 0; j < k; ++j) { + ++c_strings; + if(S[i][j].length() > s1.length()) + ++counter; + } + } + + return static_cast<double>(counter*100/c_strings); +} + +int main() { + string A[N][M] = { + {"red", "orange", "green"}, + {"red", "orange", "green"}, + {"red", "orange", "green"}, + {"red", "orange", "green"}, + }; + + cout << func(&A[0], "pink", 2); + + return 0; +} diff --git a/Year_1/Programming_1/ex1_23_07_19.cc b/Year_1/Programming_1/ex1_23_07_19.cc new file mode 100644 index 0000000..3c6c5f3 --- /dev/null +++ b/Year_1/Programming_1/ex1_23_07_19.cc @@ -0,0 +1,28 @@ +#include<iostream> + +using namespace std; + +template<int N, int M> +bool func(double (&D)[N][M], int a) { + for(int i = 0; i < M; ++i) { + for(int j = 0; j < N-1; ++j) { + if(static_cast<int>(D[j][i]+D[j+1][i]) == a) { + return true; + } + } + } + + return false; +} + +int main() { + double A[3][4] = { + {40.2, 10, 10.2, 1}, + {40.2, 10, 10.2, 1}, + {40.2, 10, 10.2, 1}, + }; + + cout << func(A, 20); + + return 0; +} diff --git a/Year_1/Programming_1/ex1_25_06_19.cc b/Year_1/Programming_1/ex1_25_06_19.cc new file mode 100644 index 0000000..f28a09b --- /dev/null +++ b/Year_1/Programming_1/ex1_25_06_19.cc @@ -0,0 +1,45 @@ +#include <iostream> +#include <utility> +#include <vector> + +using namespace std; + +template<int N, int M> +bool func(int (&A)[N][M], short k, double x) { + for(int i = 0; i < M; ++i) { + vector<pair<int, int> > v; + + for(int j = 0; j < N-1; ++j) { + v.push_back({A[j][i], A[j+1][i]}); + } + + int check_num = 0; + + for(auto const& i : v) { + if(i.second == 0) continue; + double elem = static_cast<double>(i.first) / static_cast<double>(i.second); + + if(elem < x) + check_num++; + } + + if(check_num == k) + return true; + } + + + return false; +} + +int main() { + int A[4][3] = { + {2, 3, 5}, + {10, 20, 10}, + {90, 19, 69}, + {10, 0, 0}, + }; + + cout << func(A, 2, 0.005) << endl; // 0 + cout << func(A, 2, 1.0) << endl; // 1 + return 0; +} diff --git a/Year_1/Programming_1/ex1_27_01_20.cc b/Year_1/Programming_1/ex1_27_01_20.cc new file mode 100644 index 0000000..1b0e529 --- /dev/null +++ b/Year_1/Programming_1/ex1_27_01_20.cc @@ -0,0 +1,47 @@ +#include<iostream> +#define N 3 +#define M 4 +using namespace std; + +float* func(int** Q, float a, float b) { + float* arr = new float[M]; + + int a_i = static_cast<int>(a); + int b_i = static_cast<int>(b); + + for(int i = 0; i < M; ++i) { + short counter{}; + float sum{}; + for(int j = 0; j < N; ++j) { + if(Q[j][i]) { + if(Q[j][i] >= a_i && Q[j][i] <= b_i) { + ++counter; + sum += Q[j][i]; + } + } + } + + arr[i] = (sum / static_cast<float>(counter)); + } + + return arr; +} + +int main() { + int** A = new int*[N]; + for(int i = 0; i < N; ++i) { + A[i] = new int[M]; + for(int j = 0; j < M; ++j) + A[i][j] = 24; + } + + float* arr = func(A, 1.0, 33.0); + + for(int j = 0; j < M; ++j) + cout << arr[j] << ' '; + + delete[] A; + delete arr; + + return 0; +} diff --git a/Year_1/Programming_1/ex1_28_01_19.cc b/Year_1/Programming_1/ex1_28_01_19.cc new file mode 100644 index 0000000..a027e82 --- /dev/null +++ b/Year_1/Programming_1/ex1_28_01_19.cc @@ -0,0 +1,30 @@ +#include <iostream> +#include <algorithm> +#include <vector> + +using namespace std; + +template<int N> +bool func(int (&A)[N][N], double w) { + vector<int> l; + for(int i = N-1, j = 0; j < N; --i, j++) { + l.push_back(A[i][j]); + } + + auto min_max = minmax_element(begin(l), end(l)); + + return (static_cast<double>(*min_max.first)/static_cast<double>(*min_max.second)) <= w; +} + +int main() { + int A[3][3] = { + {1, 2, 3,}, + {67, 10, 56}, + {10, 0, 1}, + }; + + cout << func(A, 0.2) << endl; // False + cout << func(A, 0.4) << endl; // True + + return 0; +} diff --git a/Year_1/Programming_1/ex1_tutorato_03_12_19.cc b/Year_1/Programming_1/ex1_tutorato_03_12_19.cc new file mode 100644 index 0000000..d8d61b0 --- /dev/null +++ b/Year_1/Programming_1/ex1_tutorato_03_12_19.cc @@ -0,0 +1,33 @@ +#include <iostream> +#include <cctype> + +using namespace std; + +template<int N> +bool* func(string (&A)[N]) { + bool* a2 = new bool[N]; + + for(int i = 0; i < N; ++i) { + bool is_pal = true; + for(int j = 0, z = A[i].length()-1; j < z; ++j, --z ) { + if(tolower(A[i].at(j)) != tolower(A[i].at(z))) { + is_pal = false; + break; + } + } + a2[i] = is_pal; + } + + return a2; +} + +int main() { + string t[] = {"oslo", "yam_a_may", "AnNa"}; + auto a = func(t); + + for(int i = 0; i < 3; ++i) { + cout << a[i] << ' '; + } + + return 0; +} diff --git a/Year_1/Programming_1/ex1_tutorato_14_01_20.cc b/Year_1/Programming_1/ex1_tutorato_14_01_20.cc new file mode 100644 index 0000000..557b0ee --- /dev/null +++ b/Year_1/Programming_1/ex1_tutorato_14_01_20.cc @@ -0,0 +1,27 @@ +#include<iostream> +#include<algorithm> +#include<vector> + +using namespace std; + +template<int N> +bool func(int (&A)[N][N], double w) { + vector<int> list; + for(int i = 0, j = N-1; i < N; ++i, --j) + list.push_back(A[j][i]); + + auto minmax = minmax_element(begin(list), end(list)); + return (static_cast<double>(*minmax.first)/static_cast<double>(*minmax.second)) <= w; +} + +int main() { + int A[3][3] = { + {1, 2, 3}, + {1, 2, 3}, + {1, 2, 3}, + }; + + cout << func(A, 0.1); + + return 0; +} diff --git a/Year_1/Programming_1/ex2_04_12_19.cc b/Year_1/Programming_1/ex2_04_12_19.cc new file mode 100644 index 0000000..66b2895 --- /dev/null +++ b/Year_1/Programming_1/ex2_04_12_19.cc @@ -0,0 +1,39 @@ +#include <iostream> +#include <string> + +using namespace std; + +template<int N> +bool func(string (&Q)[N][N], string s) { + short n_presents[2] = {0}; + for(int i = 0; i < N; ++i) { + if(Q[i][i].find(s) != std::string::npos) + n_presents[0]++; + } + + for(int i = 0, j = N-1; i < N; ++i, --j) { + cout << Q[j][i].find(s) << endl; + if(Q[j][i].find(s) != std::string::npos) + n_presents[1]++; + } + + return n_presents[0] > n_presents[1]; +} + +int main() { + string a1[3][3] = { + {"ciaoneXX", "fra", "zio"}, + {"oh, ma che", "eXXh", "sta cosa?"}, + {"greg", "no", "foXXrse"} + }; + + string a2[3][3] = { + {"ciaoneXX", "fra", "ziYYo"}, + {"oh, ma che", "eXXYYh", "sta cosa?"}, + {"gregYY", "no", "foXrse"} + }; + + cout << func(a1, "XX") << ' ' << func(a2, "YY") << endl; + + return 0; +} diff --git a/Year_1/Programming_1/ex2_06_12_18.cc b/Year_1/Programming_1/ex2_06_12_18.cc new file mode 100644 index 0000000..50744ba --- /dev/null +++ b/Year_1/Programming_1/ex2_06_12_18.cc @@ -0,0 +1,34 @@ +#include<iostream> +#define N 3 +#define M 4 + +using namespace std; + +bool* func(string (*A)[M], short k, string s) { + bool* arr = new bool[N]; + + for(int i = 0; i < N; ++i) { + short counter{}; + for(int j = 0; j < M; ++j) { + if(A[i][j].find(s) != std::string::npos) + ++counter; + } + + arr[i] = (counter >= k); + } + + return arr; +} + +int main() { + string Arr[N][M] = { + {"Ciaone", "Come one va?", "We one", ""}, + {"Ciaoe", "Come va?", "We one", ""}, + {"Ciaone", "Come one va?", "We one", ""}, + }; + + bool* v = func(Arr, 2, "one"); + for(int i = 0; i < N; ++i) cout << v[i] << ' '; + + return 0; +} diff --git a/Year_1/Programming_1/ex2_08_03_18.cc b/Year_1/Programming_1/ex2_08_03_18.cc new file mode 100644 index 0000000..88d55e1 --- /dev/null +++ b/Year_1/Programming_1/ex2_08_03_18.cc @@ -0,0 +1,49 @@ +#include<iostream> +using namespace std; + +template<int N, int M> +bool func(string (&A)[N][M], short w) { + bool check{false}; + for(int i = 0; i < N; ++i) { + bool counter{false}; + string str{""}; + string str2{""}; + for(int j = 0; j < M; ++j) { + if(A[i][j].length() < w) { + counter = false; + continue; + } + + if(!counter) { + str = A[i][j].substr(0, w); + + counter = true; + continue; + } + + str2 = A[i][j].substr(A[i][j].length()-w, w); + + if(str == str2) { + check = true; + break; + } else { + j--; + counter = false; + } + } + + if(check) break; + } + + return check; +} + +int main() { + string A[3][3] = { + {"parola", "allorapar", "bla",}, + {"", "red", "red",}, + {"blue", "", "",}, + }; + cout << func(A, 3); + return 0; +} diff --git a/Year_1/Programming_1/ex2_18_02_19.cc b/Year_1/Programming_1/ex2_18_02_19.cc new file mode 100644 index 0000000..8195fb9 --- /dev/null +++ b/Year_1/Programming_1/ex2_18_02_19.cc @@ -0,0 +1,43 @@ +#include<iostream> +#include<cctype> + +using namespace std; + +short func(string (*M)[4], unsigned short k, unsigned short s) { + short counter{}; + + for(int i = 0; i < 4; ++i) { + short _rowcounter{}; + for(int j = 0; j < 3; ++j) { + short _vocals{}; + for(char& c : M[j][i]) { + switch(tolower(c)) { + case 'a': case 'e': case 'i': case 'o': case 'u': + ++_vocals; + break; + default: break; + } + } + + if(_vocals < s) ++_rowcounter; + } + + if(_rowcounter >= k) ++counter; + } + + return counter; +} + + +int main() { + string M[3][4] = { + {"HEI", "we", "ciao", "com'è?"}, + {"HEI", "we", "ciao", "com'è?"}, + {"HEI", "we", "ciao", "com'è?"}, + }; + + cout << func(&M[0], 2, 3); + + + return 0; +} diff --git a/Year_1/Programming_1/ex2_23_07_19.cc b/Year_1/Programming_1/ex2_23_07_19.cc new file mode 100644 index 0000000..3b0ed37 --- /dev/null +++ b/Year_1/Programming_1/ex2_23_07_19.cc @@ -0,0 +1,44 @@ +#include<iostream> + +using namespace std; + +template<int N> +bool func(string (&Q)[N][N]) { + string stringaL = Q[0][0]; + string stringaC = Q[0][0]; + for(int i = 0; i < N; ++i) { + if(Q[i][i].length() > stringaL.length()) + stringaL = Q[i][i]; + else if(Q[i][i].length() < stringaC.length()) + stringaC = Q[i][i]; + } + + short vocaliL{}; + short vocaliC{}; + + for(auto& c : stringaL) { + c = tolower(c); + if(c == 'a' || c == 'e' || c == 'i' || c == 'o' || c == 'u') + ++vocaliL; + } + + for(auto& c : stringaC) { + c = tolower(c); + if(c == 'a' || c == 'e' || c == 'i' || c == 'o' || c == 'u') + ++vocaliC; + } + + return vocaliL < vocaliC; +} + +int main() { + string A[3][3] = { + {"lllll", "bb", "cc"}, + {"AAA", "e", "cc"}, + {"AAA", "bb", "cc"}, + }; + + cout << func(A); + + return 0; +} diff --git a/Year_1/Programming_1/ex2_27_01_20.cc b/Year_1/Programming_1/ex2_27_01_20.cc new file mode 100644 index 0000000..25caf5b --- /dev/null +++ b/Year_1/Programming_1/ex2_27_01_20.cc @@ -0,0 +1,57 @@ +#include<iostream> +#include<set> + +using namespace std; + +template<int N, int M> +double func(string (&A)[N][M], string x, string y, short k, short w) { + set<char> s; + for(char const&c : x) s.insert(c); + x = ""; + for(char const&c: s) x+=c; + + s.clear(); + for(char const&c : y) s.insert(c); + y = ""; + for(char const&c: s) y+=c; + + for(int i = 0; i < N; ++i) { + for(int j = 0; j < M; ++j) { + s.clear(); + for(char const&c : A[i][j]) s.insert(c); + A[i][j] = ""; + for(char const&c: s) A[i][j]+=c; + } + } + + short counter{}; + for(int i = 0; i < M; ++i) { + short k_i{}; + for(int j = 0; j < N; ++j) { + if(A[j][i].length() < w) continue; + short char_counter{}; + for(char const& c: A[j][i]) { + if(x.find(c) != std::string::npos && y.find(c) != std::string::npos) + ++char_counter; + } + if(char_counter >= w) + ++k_i; + } + if(k_i >= k) + ++counter; + } + + return static_cast<double>(counter*100)/static_cast<double>(M); +} + +int main() { + string A[3][4] = { + {"we,", "heila", "ciaone", ""}, + {"we,", "heila", "ciaone", ""}, + {"we,", "heila", "ciaone", ""}, + }; + + cout << func(A, "we", "we", 2, 2); + + return 0; +} diff --git a/Year_1/Programming_1/ex2_28_01_19.cc b/Year_1/Programming_1/ex2_28_01_19.cc new file mode 100644 index 0000000..7ad8398 --- /dev/null +++ b/Year_1/Programming_1/ex2_28_01_19.cc @@ -0,0 +1,36 @@ +#include <iostream> +#include <cctype> + +using namespace std; + +template<int N, int M> +bool func(string (&A)[N][M], unsigned short k, unsigned short s) { + for(int i = 0; i < N; ++i) { + short string_num = 0; + for(int j = 0; j < M; ++j) { + short upper_chars = 0; + for(auto const& c : A[i][j]) { + if(isupper(c)) + ++upper_chars; + } + + if(upper_chars >= s) + ++string_num; + } + + if(string_num >= k) + return false; + } + + return true; +} + +int main() { + string A[2][3] = { + {"suce", "oHh", "b"}, + {"111", "HAAa", "B"} + }; + + cout << func(A, 2, 1) << endl; + return 0; +} diff --git a/Year_1/Programming_1/ex2_tutorato_14_01_20.cc b/Year_1/Programming_1/ex2_tutorato_14_01_20.cc new file mode 100644 index 0000000..b54860e --- /dev/null +++ b/Year_1/Programming_1/ex2_tutorato_14_01_20.cc @@ -0,0 +1,38 @@ +#include<iostream> + +using namespace std; + +template<int N, int M> +bool func(string (&A)[N][M], unsigned short k, unsigned short s) { + for(int i = 0; i < N; ++i) { + short count_s{}; + for(int j = 0; j < M; ++j) { + short upper_cs{}; + for(auto const& c : A[i][j]) { + if(isupper(c)) + ++upper_cs; + } + + if(upper_cs < s) + ++count_s; + } + + if(count_s >= k) + return true; + } + + return false; +} + +int main() { + string A[3][4] = { + {"ProVA", "CiAone", "RAed"}, + {"IVVA", "CiAOO", "BLUE"}, + {"AA", "AA", "AA3#"}, + }; + + cout << func(A, 3, 1); + + + return 0; +} diff --git a/Year_1/Programming_1/h9_1.cc b/Year_1/Programming_1/h9_1.cc new file mode 100644 index 0000000..12c629d --- /dev/null +++ b/Year_1/Programming_1/h9_1.cc @@ -0,0 +1,27 @@ +#include <iostream> + +// Array NxM. Trovare media dei valori differenza tra gli elementi della diagonale principale e secondaria + +int main() { + const short N = 4, M = 3; + int A[N][M] = { + {3, 1, 5}, + {5, 3, 1}, + {8, 7, 4}, + {4, 7, 4}, + }; + + int diff1 = A[0][0], diff2 = A[N-1][0]; + + // Condizione necessaria per matrici in cui M != N + short cond = (N < M) ? N : M; + + for(int i = 1, j = N-1, j2 = 1; i < cond; ++i, --j, ++j2) { + diff1 -= A[i][i]; + diff2 -= A[j][j2]; + } + + std::cout << static_cast<float>((diff1+diff2)/2) << std::endl; + + return 0; +} diff --git a/Year_1/Programming_1/h9_2.cc b/Year_1/Programming_1/h9_2.cc new file mode 100644 index 0000000..0e9c853 --- /dev/null +++ b/Year_1/Programming_1/h9_2.cc @@ -0,0 +1,32 @@ +#include <iostream> + +// Array NxM e numero p. Stampare le medie per ogni colonna dispari dei valori x <= p + +int main() { + const short N = 4, M = 4; + int p = 9; + int A[N][M] = { + {3, 1, 5, 5}, + {5, 3, 1, 5}, + {8, 7, 4, 5}, + {4, 7, 4, 5}, + }; + // Condizione necessaria per matrici in cui M != N + short cond = (N < M) ? N : M; + + for(int i = 1; i < cond; i+=2) { + int sum = 0, c = 0; + for(int j = 0; j < M; ++j) { + if(A[j][i] <= p) { + sum += A[j][i]; + c++; + } + } + + if(c > 0) { + std::cout << static_cast<float>(sum)/c << '\n'; + } + } + + return 0; +} diff --git a/Year_1/Programming_1/h9_3.cc b/Year_1/Programming_1/h9_3.cc new file mode 100644 index 0000000..c9ef418 --- /dev/null +++ b/Year_1/Programming_1/h9_3.cc @@ -0,0 +1,31 @@ +#include <iostream> +#include <algorithm> + +// Dato array V=NxM e uno grande W, trovare il numero di elementi presenti in W che sono compresi in ogni riga di V + +int main() { + std::cout << __cplusplus; + const auto N = 4, M = 4, L = 3; + int V[N][M] = { + {3, 1, 5, 50}, + {5, 3, 1, 5}, + {8, 7, 4, 5}, + {4, 7, 4, 5}, + }; + + int W[L] = {4, 50, 2}; + + for(auto i = 0; i < N; ++i) { + const auto range = std::minmax_element(std::begin(V[i]), std::end(V[i])); + int count{0}; + for(auto const& j : W) { + if(j >= *range.first && j <= *range.second) + count++; + } + + std::cout << count << std::endl; + } + + + return 0; +} diff --git a/Year_1/Programming_1/h9_4.cc b/Year_1/Programming_1/h9_4.cc new file mode 100644 index 0000000..cd534b3 --- /dev/null +++ b/Year_1/Programming_1/h9_4.cc @@ -0,0 +1,40 @@ +#include <iostream> +#include <algorithm> + +// Data matrice V di NxM, array A e numero w<M, trovare se c'è almeno una riga di V con almeno w elementi maggiori di ogni elemento di A + +const auto N{4}, M{4}, k{3}, w{2}; + +bool row_alg(int V[N][M], int* A, int w) { + // È ovvio che sia presente almeno 0 elementi, quindi non ha senso continuare + if(w <= 0) return true; + auto max_element_of_A = std::max_element(A,A+k); + + for(auto i = 0; i < N; ++i) { + int counts = 0; + for(auto j = 0; j < M; ++j) { + if(V[i][j] > *max_element_of_A) + counts++; + + if(counts == w) + return true; + } + } + + return false; +} + +int main() { + int V[N][M] = { + {3, 59, 5, 54}, + {5, 3, 1, 5}, + {8, 7, 4, 5}, + {4, 7, 4, 5}, + }; + + int A[k] = {4, 50, 2}; + + std::cout << row_alg(V, A, w) << std::endl; + + return 0; +} diff --git a/Year_1/Programming_1/h9_5.cc b/Year_1/Programming_1/h9_5.cc new file mode 100644 index 0000000..a2e3f8b --- /dev/null +++ b/Year_1/Programming_1/h9_5.cc @@ -0,0 +1,51 @@ +#include <iostream> +#include <algorithm> +#include <map> + +// Date due matrici e un numero p, stampare i valori che compaiono p volte dalla prima alla seconda matrice + +int main() { + const auto N{4}, M{4}, L{4}, Q{4}, p{4}; + int V[N][M] = { + {3, 1, 5, 50}, + {5, 3, 1, 5}, + {8, 7, 4, 5}, + {4, 7, 4, 5}, + }; + + int W[L][Q] = { + {30, 3, 5, 50}, + {51, 25, 12, 5}, + {90, 12, 4, 5}, + {4, 6, 4, -3}, + }; + + std::map<int, int> values; + + for(auto i = 0; i < N; ++i) { + for(auto j = 0; j < M; ++j) { + if(values.find(V[i][j]) == values.end()) + values.insert({V[i][j], 1}); + else + values[V[i][j]] += 1; + } + } + + for(auto i = 0; i < L; ++i) { + for(auto j = 0; j < Q; ++j) { + auto elem = values.find(W[i][j]); + if(elem != values.end()) { + if(elem->second >= p) { + std::cout << W[i][j] << ' '; + } else { + std::cout << "x "; + } + } else { + std::cout << "x "; + } + } + std::cout << '\n'; + } + + return 0; +} diff --git a/Year_1/Programming_1/h9_6.cc b/Year_1/Programming_1/h9_6.cc new file mode 100644 index 0000000..d889c43 --- /dev/null +++ b/Year_1/Programming_1/h9_6.cc @@ -0,0 +1,35 @@ +#include <iostream> +#include <algorithm> + +int main() { + const auto N{4}, M{4}, s{50}, z{2}; + int V[N][M] = { + {3, 1, 5, 50}, + {5, 3, 1, 5}, + {8, 7, 4, 5}, + {4, 7, 4, 5}, + }; + + int W[M] = {0}; + + for(auto i = 0; i < N; ++i) { + bool finish{false}; + for(auto j = 0, index = 0; j < M-1; ++j, ++index) { + int sum{0}; + for(auto zz = index; zz < index+z; ++zz) { + sum+=V[i][zz]; + if(sum >= s) { + W[i] = 1; + finish = true; + break; + } + } + if(finish) break; + } + } + + for(auto i = 0; i < N; ++i) + std::cout << W[i] << ' '; + + return 0; +} diff --git a/Year_1/Programming_1/lab_14_12_18.cc b/Year_1/Programming_1/lab_14_12_18.cc new file mode 100644 index 0000000..02bbd69 --- /dev/null +++ b/Year_1/Programming_1/lab_14_12_18.cc @@ -0,0 +1,149 @@ +#include<iostream> +#include<cmath> +#define DIM 30 + +using namespace std; + +class A { +protected: + double* ptr; + short len; + + void getPtr(ostream& os) { + os << "ptr=["; + for(int i = 0; i < len; ++i) { + os << ptr[i] << ' '; + } + + os << "]"; + } +public: + A(short n) : len{n} { + srand(time(NULL)); + ptr = new double[n]; + for(int i = 0; i < n; ++i) { + ptr[i] = (double) rand() / RAND_MAX; + } + } + + ~A() { + delete ptr; + } + virtual double foo(short a) const = 0; + virtual void print(ostream& os) = 0; + + double operator[](int i) { + return ptr[i]; + } +}; + +class B : public A { +public: + B(short m, double s) : A{m}, alpha{s} {} + double foo(short b) const { + return static_cast<double>(log(1+extract(b))); + } + void print(ostream& os) { + os << "B, "; + getPtr(os); + os << ", alpha=" << alpha; + } + +private: + double alpha; + double extract(short s) const { + return (ptr[s%len]+alpha)/2; + } + +}; + +template<typename T> +class C; + +template<> +class C<double> : public A { +public: + C(short n) : A{n} { + x = static_cast<double>(log(1+n)); + } + + double foo(short r) const { + return g(r*x); + } + + double g(double k) const { + return 3*k; + } + + void print(ostream& os) { + os << "C<double> "; + getPtr(os); + os << ", x=" << x; + } +private: + short x; +}; + +template<> +class C<int> : public A { +public: + C(short n) : A{n} { + x = g(n); + } + + double foo(short r) const { + return g(r*x); + } + + short g(short k) const { + return 3*k; + } + + void print(ostream& os) { + os << "C<short> "; + getPtr(os); + os << ", x=" << x; + } +private: + short x; +}; + +ostream& operator<<(ostream& os, A& a) { + a.print(os); + + return os; +} + +int main() { + srand(328832748); + A* vett[DIM]; + double maxfoo{-11111111.0}; + double g_sum{}; + for(int i=0; i<DIM; i++) { + short n=1+rand()%5; + switch(rand()%3) { + case 0: vett[i]= new B(n, n/100.0); break; + case 1: { + vett[i]= new C<double>(n); + auto refC = dynamic_cast<C<double>*>(vett[i]); + g_sum+=refC->g(5); + break; + } + case 2: vett[i]= new C<int>(n); + + } + + double foo5 = vett[i]->foo(5); + if(foo5 > maxfoo) + maxfoo = foo5; + } + + for(int i = 0; i < DIM; ++i) { + cout << i+1 << ")" << *(vett[i]) << ", foo(5)=" << vett[i]->foo(5) << endl; + } + + cout << "max(foo(5))=" << maxfoo << " sum(g(5))=" << g_sum << endl; + cout << (*vett[2])[0] << endl; + + return 0; +} diff --git a/Year_1/Programming_1/lab_15_02_19_D.cc b/Year_1/Programming_1/lab_15_02_19_D.cc new file mode 100644 index 0000000..b050e72 --- /dev/null +++ b/Year_1/Programming_1/lab_15_02_19_D.cc @@ -0,0 +1,159 @@ +#include<iostream> +#include<stdexcept> +#define DIM 50 + +using namespace std; + +class A { +public: + A(short m, short k) : len{m} { + ptr = new int[len]; + srand(time(NULL)); + + for(int i = 0; i < len; ++i) { + ptr[i] = rand()%k + 1; + } + } + + ~A() { + delete ptr; + } + + virtual double const f() = 0; + void print(ostream& os) { + os << typeid(*this).name() << ", ptr=[ "; + for(int i = 0; i < len; ++i) + os << ptr[i] << ' '; + + os << "]"; + } + + int get(short i) { + if(i >= len) + throw out_of_range{"out of range"}; + + return ptr[i]; + } + + short getLen() { + return len; + } + + int& operator[](int x){ + return ptr[x]; + } + + const int& operator[](int x) const { + return ptr[x]; + } + +private: + int* ptr; + short len; + +}; + +class B : public A { +public: + B(short m, short k, double y) : A{m, k}, p{y} {} + double const f() { + int sum{}; + for(int i = 0; i < getLen(); ++i) { + int t = get(i); + + if((t%2) == 0) { + sum+=t; + } + } + + if(sum == 0) + return 0; + + return static_cast<double>(sum/p); + } + + void print(ostream& os) { + A::print(os); + os << ", p=" << p; + } +private: + double p; +}; + +class C : public A { +public: + C(short n, short k, char c) : A{n, k}, x{c} {} + + double const f() { + int sum{}; + short c{}; + for(int i = 0; i < getLen(); ++i) { + int t = get(i); + + if((t%2) == 1) { + sum+=t; + ++c; + } + } + + if(c == 0) + return 0; + + return static_cast<double>(sum/c); + } + + string const g(char c) { + string t{""}; + t+=x; + t+=c; + + return t; + } + + void print(ostream& os) { + A::print(os); + os << ", x=" << x; + } +private: + char x; +}; + +ostream& operator<<(ostream& os, A& a) { + a.print(os); + + return os; +} + +int main() { + srand(111222333); + A *vett[DIM]; + + string conc{""}; + for(int i=0; i<DIM; i++){ + short n=1+rand()%10; + short m = 1+rand()%15; + if(rand()%2==0) + vett[i]= new B(n, m, rand()/(double) RAND_MAX+0.05); + else { + vett[i]= new C(n, m, (char) (rand()%('z' - 'a' + 1) + 'a')); + auto cpnt = dynamic_cast<C*>(vett[i]); + conc+=cpnt->g('h'); + } + } + + double sum{}; + for(int i = 0; i < DIM; i++) { + auto fval = vett[i]->f(); + cout << i << ") " << *(vett[i]) << ", f()=" << fval << endl; + sum+=fval; + } + + cout << "PUNTO 2:\n\tavg(f())=" << sum/DIM << ", g('h')=" << conc << endl; + cout << "PUNTO 3:\n"; + cout << (*(vett[0])).get(0) << endl; + (*(vett[0]))[0] = 24; + cout << (*(vett[0])).get(0) << endl; + + + return 0; +} diff --git a/Year_1/Programming_1/lab_26_07_19.cc b/Year_1/Programming_1/lab_26_07_19.cc new file mode 100644 index 0000000..91822d9 --- /dev/null +++ b/Year_1/Programming_1/lab_26_07_19.cc @@ -0,0 +1,164 @@ +#include<iostream> +#include<cmath> +#include<typeinfo> + +#define DIM 30 + +using namespace std; + +class A { +public: + A(short m, int a, int b) : len(m) { + srand(time(NULL)); + vec = new int[m]; + + for(int i = 0; i < m; ++i) { + vec[i] = rand()%b + a; + } + } + + ~A() { + delete vec; + } + + virtual double foo(short a) = 0; + short getLen() { + return len; + } + + virtual void print(ostream& o) = 0; + + int operator()(int i1, int i2) { + if(i1 < 0) i1 = 0; + if(i2 > len) i2 = len; + + int sum = 0; + + for(int i = i1; i < i2; ++i) { + sum+=vec[i]; + } + + return sum; + } + +protected: + int get(short i) { + return vec[i]; + } +private: + int* vec; + short len; +}; + +class B : public A { +public: + B(short m, int x, int y) : A(m, x, y) { + srand(time(NULL)); + short rand_num = rand()%m; + p = get(rand_num); + } + + double foo(short a) { + return static_cast<double>(prod(a)) / static_cast<double>(p); + } + + void print(ostream& os) { + os << "vec=["; + for(int i = 0; i < getLen(); ++i) { + os << get(i) << ' '; + } + os << "], p=" << p; + } +protected: + int prod(short s) { + int index = s%getLen(); + int _prod = 1; + for(int i = index; i < getLen(); ++i) { + _prod *= get(i); + } + + return _prod; + } +private: + int p; +}; + + +template<class T> class C : public A { +public: + C(short n, int a, int b) : A(n, a, b) { + if(typeid(T) == typeid(short)) { + x = n; + } else { + x = log(1+pow(sin(n), 2)); + } + + } + + double foo(short r) { + return g(r); + } + + T g(T k) { + return 2*x*(k+1); + } + + void print(ostream& os) { + os << "vec=["; + for(int i = 0; i < getLen(); ++i) { + os << get(i) << ' '; + } + os << "], x=" << x; + } +private: + T x; +}; + +ostream& operator<<(ostream& os, A& a) { + os << typeid(a).name() << ", "; + a.print(os); + return os; +} + +int main() { + srand (time(0)); + A* vett[DIM]; + double sum_cd = 0; + short num_cd = 0; + for(int i=0; i < DIM; ++i) { + short n = 1+rand()%10; + switch ( rand ()%3) { + case 0: + vett[i]= new B(n, rand()%5 + 1, rand()%10 + 5); + break ; + case 1: { + vett[i]= new C<double>(n, rand()%5 + 1, rand()%10 + 5); + ++num_cd; + C<double>& cc = dynamic_cast<C<double>& >(*(vett[i])); + sum_cd += cc.g(5); + + break ; + } + case 2: + vett[i]= new C<short>(n, rand()%5 + 1, rand()%10 + 5); + } + } + + double max_foo = -100000; + + for(int i = 0; i < DIM; ++i) { + auto foo3 = vett[i]->foo(3); + + if(foo3 > max_foo) { + max_foo = foo3; + } + cout << (*(vett[i])) << ", foo(3)=" << foo3 <<endl; + } + + // max_foo => Valore maggiore calcolato per foo(3) + // sum_cd / num_cd => media valori g(5) per C<Double> + + cout << (*vett[0])(0, 2) << endl; + + return 0; +} diff --git a/Year_1/Programming_1/lab_28_02_19_A.cc b/Year_1/Programming_1/lab_28_02_19_A.cc new file mode 100644 index 0000000..ff2eaae --- /dev/null +++ b/Year_1/Programming_1/lab_28_02_19_A.cc @@ -0,0 +1,166 @@ +#include<iostream> +#include<stdexcept> +#include<cstdlib> +#include<cmath> +#define DIM 50 + +using namespace std; + +class A { +public: + A(short m) : len{m} { + arr = new short[m]; + srand(time(NULL)); + for(int i = 0; i < m; ++i) { + arr[i] = rand()%10+1; + } + } + + ~A() { + delete[] arr; + } + + virtual double f(short a) = 0; + virtual void print(ostream& os) = 0; + + short getLen() { + return len; + } + +protected: + short get(short i) { + if(i < 0 || i >= getLen()) + throw out_of_range{"out of arr' range"}; + + return arr[i]; + } + +private: + short* arr; + short len; +}; + +template<typename T> +class B : public A { +public: + B(short m, char c) : A{m} { + if(typeid(T) == typeid(char)) { + x = c; + } else if(typeid(T) == typeid(string)) { + for(int i = 0; i < m; ++i) + x+=c; + + } else { + // tipo non gestito + throw bad_typeid{}; + } + } + + double f(short a) override { + double n = static_cast<double>(getLen() - a); + double sum{}; + for(int i = a; i < getLen(); ++i) + sum+=get(i); + + return sum/n; + } + + void print(ostream& os) override { + os << "B<" << (typeid(T) == typeid(char) ? "char" : "string") << "> arr=["; + for(int i = 0; i < getLen(); ++i) + os << get(i) << ' '; + os << "], x=" << x; + } + + double foo(short s) { + return log(s) + sin(f(s)); + } +private: + T x; +}; + +class C : public A { +public: + C(short n, int k) : A{n}, y{k} {} + + double f(short a) override { + srand(time(NULL)); + short rand_elem = get(rand()%getLen()); + + return static_cast<double>(a+y)/static_cast<double>(rand_elem); + } + + double g(short w) { + // sicuri che non debba convertire a double? qui sarà sempre 0, forse 1 + return static_cast<double>(sin(w+y)); + } + + void print(ostream& os) override { + os << "C arr=["; + for(int i = 0; i < getLen(); ++i) + os << get(i) << ' '; + os << "], y=" << y; + } + + C& operator++() { + ++y; + return *this; + } +private: + int y; +}; + +ostream& operator<<(ostream& os, A& a) { + a.print(os); + + return os; +} + +int main() { + srand(111222333); + + A *vett[DIM]; + + double max_f3{-100000000.0}; + short c_count{}; + double gsum{}; + short i_to_p{-1}; + + for(int i=0; i<DIM; i++) { + short n=1+rand()%10; + switch(rand()%3) { + case 0: + { + vett[i]= new C(n, rand()%10 + 1); + i_to_p = i; + auto cref = dynamic_cast<C&>(*(vett[i])); + gsum+=cref.g(5); + ++c_count; + break; + } + case 1: + vett[i]= new B<string>(n, rand()%('z' - 'a' + 1) + 'a'); + break; + case 2: + vett[i]= new B<char>(n, rand()%('z' - 'a' + 1) + 'a'); + } + + auto f3 = vett[i]->f(3); + if(f3 > max_f3) + max_f3 = f3; + } + + for(int i = 0; i < DIM; ++i) + cout << i+1 << ')' << *(vett[i]) << ", f(3)=" << vett[i]->f(3) << endl; + + cout << "max f(3)=" << max_f3; + cout << " avg g(5)=" << (static_cast<double>(gsum/c_count)) << endl; + if(i_to_p >= 0) { + cout << *(vett[i_to_p]) << endl; + auto cref = dynamic_cast<C*>(vett[i_to_p]); + ++(*cref); + cout << *(vett[i_to_p]) << endl; + } + + return 0; +} diff --git a/Year_1/Programming_1/lab_28_02_19_B.cc b/Year_1/Programming_1/lab_28_02_19_B.cc new file mode 100644 index 0000000..4639f66 --- /dev/null +++ b/Year_1/Programming_1/lab_28_02_19_B.cc @@ -0,0 +1,162 @@ +#include<iostream> +#include<cstdlib> +#include<cmath> +#define DIM 50 +using namespace std; + +class A { +public: + A(short m, char c) : len{m} { + ptr = new char[len]; + srand(time(NULL)); + for(int i = 0; i < m; ++i) { + ptr[i] = static_cast<char>(rand()%(c-'a'+1) + 'a'); + } + } + A(const A& a) = default; + ~A() { + delete ptr; + } + + virtual string elab(short a, char c) = 0; + virtual void print(ostream& o) = 0; + short getLen() { + return len; + } + + char& operator[](int i) { + return ptr[i]; + } + +protected: + char get(short i) { + if(i > len) + return ptr[0]; + + return ptr[i]; + } + +private: + char* ptr; + short len; +}; + +class B : public A { +public: + B(short m, double y, char c) : A{m, c}, x{y} {} + double foo(short s) { + return sin(x+s)/log(x+s); + } + + string elab(short a, char c) { + string st{}; + for(int i = 0; i < getLen(); ++i) { + auto ch = get(i); + if(abs(ch-c) <= a) { + st+=ch; + } + } + + return st; + } + + void print(ostream& os) { + os << "B ptr=["; + for(int i = 0; i < getLen(); ++i) + os << get(i) << ' '; + + os << "], x=" << x << ", elab(5, z)=" << elab(5, 'z'); + } + +private: + double x; +}; + +template<typename T> +class C : public A { +public: + C(short n, double k, char c) : A{n, c} { + if(typeid(T) == typeid(short)) + y = static_cast<int>(100*k); + else + y = k; + } + + string elab(short a, char c) { + string st{}; + if(getLen() >= a) { + if(a >= 1) { + for(int i = 0; i < getLen(); st+=c, ++i); + } + } else { + for(int i = 0; i < getLen(); st += get(i++)); + } + + return st; + } + + double g(short w) { + return sin(w+y); + } + + void print(ostream& os) { + os << "C<" << typeid(T).name() << "> ptr=["; + for(int i = 0; i < getLen(); ++i) + os << get(i) << ' '; + + os << "], y=" << y << ", elab(5, z)=" << elab(5, 'z'); + } +private: + T y; +}; + +ostream& operator<<(ostream& os, A& a) { + a.print(os); + + return os; +} + +int main() { + srand(time(NULL)); + + A *vett[DIM]; + short cb{}, cc{}; + double sumb{}, sumc{}; + + for(int i=0; i<DIM; i++) { + short n=1+rand()%10; + switch(rand()%3) { + case 0: + { + vett[i]= new B(n, (double) rand()/RAND_MAX, rand()%('z' - 'a' + 1) + 'a'); + auto temp = dynamic_cast<B&>(*(vett[i])); + sumb+=temp.foo(5); + ++cb; + break; + } + case 1: + vett[i]= new C<double>(n, (double) rand()/RAND_MAX, rand()%('z' - 'a' + 1) + 'a'); + break; + case 2: + { + vett[i]= new C<short>(n, (double) rand()/RAND_MAX, rand()%('z' - 'a' + 1) + 'a'); + auto temp = dynamic_cast<C<short>&>(*(vett[i])); + sumc+=temp.g(5); + ++cc; + } + } + } + + for(int i=0; i<DIM; i++) { + cout << *vett[i] << endl; + } + + cout << "avg(foo(5))=" << sumb/cb << " "; + cout << "avg(g(5))=" << sumc/cc << endl; + + cout << endl; + cout << *vett[0] << endl; + (*vett[0])[0] = '$'; + cout << *vett[0] << endl; + return 0; +} diff --git a/Year_1/Programming_1/lab_28_02_19_C.cc b/Year_1/Programming_1/lab_28_02_19_C.cc new file mode 100644 index 0000000..ac53815 --- /dev/null +++ b/Year_1/Programming_1/lab_28_02_19_C.cc @@ -0,0 +1,185 @@ +#include<iostream> +#include<cmath> +#include<set> +#define DIM 10 + +using namespace std; + +class A { +public: + A(short m) : len{m} { + srand(time(NULL)); + base = new char[len]; + for(int i = 0; i < len; ++i) { + base[i] = rand()%('z'-'a'+1)+'a'; + } + } + + ~A() { + delete base; + } + + short getLen() { + return len; + } + + virtual string extract(short x) = 0; + virtual void print(ostream& os) = 0; + +protected: + char get(short i) { + return base[i]; + } + +private: + char* base; + short len; +}; + +class B : public A { +public: + B(short m, double p) : A{m} { + for(int i = 0; i < m; ++i) { + switch(get(i)) { + case 'a': + case 'e': + case 'i': + case 'o': + case 'u': + str+=get(i); + } + } + } + + double foo(short s) { + return sin(k+s)/log(s+1); + } + + string extract(short x) override { + string x2{""}; + short inserted{}; + set<char> chars_a; + for(int i = 0; i < getLen(); ++i) + chars_a.insert(get(i)); + + while(inserted < x) { + char r_char = rand()%('z'-'a'+1)+'a'; + if(chars_a.find(r_char) != chars_a.end()) { + x2+=r_char; + ++inserted; + } + } + + return x2; + } + + void print(ostream& os) override { + os << "B: base=["; + for(int i = 0; i < getLen(); ++i) { + os << get(i) << ' '; + } + os << "], str=" << str << ", k=" << k; + } + +private: + string str; + double k; +}; + +class C : public A { +public: + C(short n, int k) : A{n}, y{k} {} + + double g(short w) { + return sin(w+y); + } + + string extract(short x) override { + string x2{""}; + char* narr = new char[x]; + short counter_narr{}; + + for(int i = 0; i < getLen(); ++i) { + switch(get(i)) { + case 'a': + case 'e': + case 'i': + case 'o': + case 'u': + break; + default: + narr[counter_narr++] = get(i); + } + } + for(int i = 0; i < x; ++i) + x2+=narr[i]; + + delete[] narr; + + return x2; + } + + void print(ostream& os) override { + os << "C: base=["; + for(int i = 0; i < getLen(); ++i) { + os << get(i) << ' '; + } + os << "], y=" << y; + } + + C operator++(int) { + C temp{*this}; + + y++; + + return temp; + } +private: + int y; +}; + +ostream& operator<<(ostream& os, A& a) { + a.print(os); + + return os; +} + +int main() { + A *vett[DIM]; + + double sum{}; + short i_c{-1}; + for(int i=0; i<DIM; i++) { + short n=10+rand()%10; + switch(rand()%2){ + case 0: { + vett[i]= new C(n, rand()%20 + 1); + auto cref = dynamic_cast<C*>(vett[i]); + sum+=cref->g(5); + i_c = i; + break; + } + case 1: { + vett[i]= new B(n, rand()/(double) RAND_MAX); + auto bref = dynamic_cast<B*>(vett[i]); + sum+=bref->foo(5); + break; + } + } + } + + for(int i=0; i<DIM; i++) + cout << *(vett[i]) << ", extract(3)=" << vett[i]->extract(3) << endl; + + cout << sum/DIM << endl; + + if(i_c >= 0) { + cout << *vett[i_c] << endl; + auto cref = dynamic_cast<C*>(vett[i_c]); + (*cref)++; + cout << *vett[i_c] << endl; + + + } + return 0; +} diff --git a/Year_1/Programming_2/algorithms/binarysearch.cc b/Year_1/Programming_2/algorithms/binarysearch.cc new file mode 100644 index 0000000..c9b4cd7 --- /dev/null +++ b/Year_1/Programming_2/algorithms/binarysearch.cc @@ -0,0 +1,33 @@ +#include<iostream> + +using namespace std; + +bool bs(int a[], int i, int j, int x) { + if(j<i) return false; + int mid = i+(j-i)/2; + if(a[mid] == x) + return true; + if(a[mid] > x) + return bs(a, i, mid-1, x); + return bs(a, mid+1, j, x); +} + +bool bs2(int a[], int i, int j, int x) { + while(i <= j) { + int mid = i+(j-i)/2; + if(a[mid] == x) return true; + if(a[mid] < x) + i = mid+1; + else + j = mid-1; + } + return false; +} + +int main() { + int a[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; + for(int i = 0; i < 12; ++i) + cout << i << ' '<<bs(a, 0, 9, i) << ' ' << bs2(a, 0, 9, i) << endl; + return 0; +} + diff --git a/Year_1/Programming_2/algorithms/cbrt.cc b/Year_1/Programming_2/algorithms/cbrt.cc new file mode 100644 index 0000000..30c7792 --- /dev/null +++ b/Year_1/Programming_2/algorithms/cbrt.cc @@ -0,0 +1,37 @@ +#include<iostream> + +using namespace std; + +int cbrt(int n) { + int i = 0; + int j = n; + int q = (i+j)/2; + while(q*q*q != n) { + q = (i+j)/2; + if(q*q*q < n) + i=q; + else + j=q; + } + return q; +} + +double cbrt2(int n) { + int i = 1; + while(i*i*i <= n) + ++i; + // precision + + --i; + while(i*i*i < n) + i+=0.000001; + + return i; +} + +int main() { + int i; + cin >> i; + cout << i << ' ' << cbrt(i) << endl; + return 0; +} diff --git a/Year_1/Programming_2/algorithms/insertionsort.cc b/Year_1/Programming_2/algorithms/insertionsort.cc new file mode 100644 index 0000000..9b309d6 --- /dev/null +++ b/Year_1/Programming_2/algorithms/insertionsort.cc @@ -0,0 +1,42 @@ +#include<iostream> + +using namespace std; + +void insertionsort(int a[], int n) { + for(int i = 1; i < n; ++i) { + int j = i-1; + int key = a[i]; + while(j > -1 && a[j] > key) { + swap(a[j+1], a[j]); + --j; + } + a[j+1] = key; + } +} + +void insertionsort_rec(int a[], int n) { + if(n < 2) return; + insertionsort_rec(a, n-1); + + int key = a[n-1]; + int j = n-2; + + while(j > -1 && a[j] > key) { + swap(a[j+1], a[j]); + --j; + } + + a[j+1] = key; + +} + +int main() { + int arr[10] = {3, 450, 12, 4, -1, 0, 24, 95, 123, 0}; + for(int i = 0; i < 10; ++i) + cout << *(arr+i) << ' '; + cout << endl; + insertionsort_rec(arr, 10); + for(int i = 0; i < 10; ++i) + cout << *(arr+i) << ' '; + return 0; +} diff --git a/Year_1/Programming_2/algorithms/log.cc b/Year_1/Programming_2/algorithms/log.cc new file mode 100644 index 0000000..1e49a2e --- /dev/null +++ b/Year_1/Programming_2/algorithms/log.cc @@ -0,0 +1,25 @@ +#include<iostream> + +using namespace std; + +double log(double n) { + if(n <= 2) return 1.0; + return 1.0 + log(n/2); +} + +int log2(double n) { + int a = 1; + + while(n > 2) { + n /= 2; + ++a; + } + + return a; +} + +int main() { + for(int i = 0; i < 25; ++i) + cout << i << ' ' << log(i) << ' ' << log2(i) << endl; + return 0; +} diff --git a/Year_1/Programming_2/algorithms/mergesort.cc b/Year_1/Programming_2/algorithms/mergesort.cc new file mode 100644 index 0000000..68d28cb --- /dev/null +++ b/Year_1/Programming_2/algorithms/mergesort.cc @@ -0,0 +1,52 @@ +#include<iostream> + +using namespace std; + +void merge(int A[], int l, int q, int r) { + int i = l; + int j = q+1; + int k = l; + int B[r]; + + while((i <= q) && (j <= r)) { + if(A[i] <= A[j]) + B[k] = A[i++]; + else + B[k] = A[j++]; + + k++; + } + + while(i <= q) + B[k++] = A[i++]; + + while(j <= r) + B[k++] = A[j++]; + + for(k = l; k <= r; ++k) + A[k] = B[k]; +} + +void mergesort(int A[], int l, int r) { + if(l < r) { + int q = (l+r)/2; + mergesort(A, l, q); + mergesort(A, q+1, r); + merge(A, l, q, r); + } +} + + +int main() { + int a[] = {7,1,22,3,2,12,27,31,6}; + for(int i = 0; i < 9; ++i) { + cout << a[i] << ' '; + } + cout << endl; + mergesort(a, 0, 8); + for(int i = 0; i < 9; ++i) { + cout << a[i] << ' '; + } + + return 0; +} diff --git a/Year_1/Programming_2/algorithms/pow.cc b/Year_1/Programming_2/algorithms/pow.cc new file mode 100644 index 0000000..16cf419 --- /dev/null +++ b/Year_1/Programming_2/algorithms/pow.cc @@ -0,0 +1,25 @@ +#include<iostream> + +using namespace std; + +int pow(int x, int y) { + int a = 1; + + for(int i = 0; i < y; ++i) + a*=x; + + return a; +} + + +int pow2(int x, int y) { + if(y < 1) return 1; + + return x*pow(x, y-1); +} + +int main() { + cout << pow(2, 5) << endl; + cout << pow2(2, 5) << endl; + return 0; +} diff --git a/Year_1/Programming_2/algorithms/quicksort.cc b/Year_1/Programming_2/algorithms/quicksort.cc new file mode 100644 index 0000000..795bd7b --- /dev/null +++ b/Year_1/Programming_2/algorithms/quicksort.cc @@ -0,0 +1,38 @@ +#include<iostream> + +using namespace std; + +int partition(int A[], int l, int r) { + int x = A[r]; + int i = l-1; + + for(int j = l; j < r; ++j) { + if(A[j] <= x) { + swap(A[++i], A[j]); + } + } + swap(A[++i], A[r]); + return i; +} + +void quicksort(int A[], int l, int r) { + if(l < r) { + int q = partition(A, l, r); + quicksort(A, l, q-1); + quicksort(A, q+1, r); + } +} + +int main() { + int a[] = {7,1,22,3,2,12,27,31,6}; + for(int i = 0; i < 9; ++i) { + cout << a[i] << ' '; + } + cout << endl; + quicksort(a, 0, 8); + for(int i = 0; i < 9; ++i) { + cout << a[i] << ' '; + } + + return 0; +} diff --git a/Year_1/Programming_2/algorithms/selectionsort.cc b/Year_1/Programming_2/algorithms/selectionsort.cc new file mode 100644 index 0000000..57dcc17 --- /dev/null +++ b/Year_1/Programming_2/algorithms/selectionsort.cc @@ -0,0 +1,46 @@ +#include<iostream> +#include<algorithm> + +using namespace std; + +void selectionsort(int a[], int n) { + for(int i = 0; i < n-1; ++i) { + int min = i; + for(int j = i+1; j < n; ++j) { + if(a[j] < a[min]) + min = j; + } + + swap(a[min], a[i]); + } +} + +int min_i(int a[], int i, int j) { + if(i == j) return i; + + int k = min_i(a, i+1, j); + return (a[i] < a[k]) ? i : k; +} + +void selectionsort_rec(int* a, int b, int e=0) { + if(b == e) return; + + int key = min_i(a, e, b-1); + if(key != e) + swap(a[key], a[e]); + + selectionsort_rec(a, b, e+1); +} + +int main() { + int arr[] = {3,450,12,4,-1,0,24,95,123,0}; + for(int i = 0; i < 10; ++i) { + cout << *(arr+i) << ' '; + } + cout << endl; + selectionsort_rec(arr, 10); + for(int i = 0; i < 10; ++i) { + cout << *(arr+i) << ' '; + } + return 0; +} diff --git a/Year_1/Programming_2/algorithms/sqrt.cc b/Year_1/Programming_2/algorithms/sqrt.cc new file mode 100644 index 0000000..aa6b032 --- /dev/null +++ b/Year_1/Programming_2/algorithms/sqrt.cc @@ -0,0 +1,46 @@ +#include<iostream> + +using namespace std; + +double abs(double n) { + if(n < 0) return -n; + + return n; +} + + +double sq(int n) { + double x = n; + double y = 1; + while(x-y > 0.0000001) { + x = (x+y)/2; + y = n/x; + } + return x; +} + +double sq2_n(double n, double a) { + if(abs(a*a - n) <= 0.000001) { + return a; + } + + return sq2_n(n, (a+n/a)/2); +} + +double sq2(int n) { + return sq2_n(n, n/2); +} + +double sqrt_d(int n) { + double x = 1; + while(abs(x*x-n)>=0.0000001) { + x = ((n/x)+x)/2; + } + return x; +} + +int main() { + cout << sq(81) << endl; + cout << sq2(81) << endl; + return 0; +} diff --git a/Year_1/Programming_2/coding_contest/dolcetti.cpp b/Year_1/Programming_2/coding_contest/dolcetti.cpp new file mode 100644 index 0000000..c3409a4 --- /dev/null +++ b/Year_1/Programming_2/coding_contest/dolcetti.cpp @@ -0,0 +1,51 @@ +#include<iostream> +#include<fstream> +#include<queue> +#include<vector> + +using namespace std; + +int main() { + using tii = tuple<int, int, int>; + ifstream in("input.txt"); + ofstream out("output.txt"); + + for(int ts = 0; ts < 100; ++ts) { + int N; + in >> N; + + priority_queue<tii, vector<tii>> pq; + tii qq; + for(int i = 0; i < N; ++i) { + int e1, e2; + in >> e1 >> e2; + get<0>(qq) = e1-e2; + get<1>(qq) = e1; + get<2>(qq) = e2; + + pq.push(qq); + } + + int counter = N; + int sum{}; + + while(counter-- > N/2) { + qq = pq.top(); + sum += get<1>(qq); + pq.pop(); + } + + while(!pq.empty()) { + qq = pq.top(); + sum += get<2>(qq); + pq.pop(); + } + + out << sum << endl; + } + + in.close(); + out.close(); + return 0; +} + diff --git a/Year_1/Programming_2/coding_contest/gita.cpp b/Year_1/Programming_2/coding_contest/gita.cpp new file mode 100644 index 0000000..cbb4910 --- /dev/null +++ b/Year_1/Programming_2/coding_contest/gita.cpp @@ -0,0 +1,46 @@ +#include<iostream> +#include<fstream> +#include<vector> +#include<map> + +using namespace std; + +int main() { + ifstream in("input.txt"); + ofstream out("output.txt"); + + for(int c = 0; c < 100; ++c) { + int N, L; + in >> N >> L; + vector<pair<short, int>> students; + for(int i = 0; i < N; ++i) { + int num; + in >> num; + students.push_back({num, 0}); + } + + int index, val; + for(int i = 0; i < L; ++i) { + in >> index >> val; + students[index].second += val; + } + + vector<pair<short, int>> errors; + short _j{}; + for(auto const& i : students) { + if(i.second < i.first) { + errors.push_back({_j, i.first-i.second}); + } + _j++; + } + + out << errors.size() << ' '; + for(auto const& i : errors) { + out << i.first << ' ' << i.second << ' '; + } + out << endl; + } + out.close(); + in.close(); + return 0; +} diff --git a/Year_1/Programming_2/coding_contest/gribaudo.cpp b/Year_1/Programming_2/coding_contest/gribaudo.cpp new file mode 100644 index 0000000..39d0e42 --- /dev/null +++ b/Year_1/Programming_2/coding_contest/gribaudo.cpp @@ -0,0 +1,47 @@ +#include<iostream> +#include<vector> +#include<fstream> + +using namespace std; + +int maxpath(vector<vector<int>>& v) { + for(int i = v.size()-2; i >= 0; --i) { + for(int j = 0; j <= i; ++j) { + if(v[i+1][j] > v[i+1][j+1]) { + v[i][j] += v[i+1][j]; + } else { + v[i][j] += v[i+1][j+1]; + } + } + } + + return v[0][0]; +} + +int main() { + ifstream in("input.txt"); + ofstream out("output.txt"); + + for(int ts = 0; ts < 1; ++ts) { + int N; + in >> N; + vector<vector<int>> triangle; + + for(int i = 0; i < N; ++i) { + int e; + triangle.push_back(vector<int>{}); + int j; + for(j = 0; j <= i; ++j) { + in >> e; + triangle[i].push_back(e); + } + for(; j < N; ++j) + triangle[i].push_back(0); + } + out << maxpath(triangle) << endl; + } + + in.close(); + out.close(); + return 0; +} diff --git a/Year_1/Programming_2/coding_contest/gualtieri.cpp b/Year_1/Programming_2/coding_contest/gualtieri.cpp new file mode 100644 index 0000000..f8a0ecf --- /dev/null +++ b/Year_1/Programming_2/coding_contest/gualtieri.cpp @@ -0,0 +1,46 @@ +#include<iostream> +#include<fstream> +#include<map> + +using namespace std; + +int main() { + ifstream in("input.txt"); + ofstream out("output.txt"); + + for(int ts = 0; ts < 100; ++ts) { + string P{}, L{}; + in >> P; + in >> L; + map<char, int> chars; + + for(auto const& c : P) { + (chars.find(c) == chars.end()) ? chars[c] = 1 : chars[c]+=1; + } + int lenn = L.length(); + int lenp = P.length(); + int counter{}; + + for(int i = 0; i < lenn-lenp+1; ++i) { + map<char, int> tmp; + bool check{true}; + for(int j = i; j < i+lenp; ++j) { + (tmp.find(L[j]) == tmp.end()) ? tmp[L[j]] = 1 : tmp[L[j]]+=1; + } + for(auto const &i : tmp) { + if(chars[i.first] != tmp[i.first]) { + check = false; + break; + } + } + if(check) + ++counter; + } + out << counter << endl; + + } + + out.close(); + in.close(); + return 0; +} diff --git a/Year_1/Programming_2/coding_contest/ladri.cpp b/Year_1/Programming_2/coding_contest/ladri.cpp new file mode 100644 index 0000000..04e8e65 --- /dev/null +++ b/Year_1/Programming_2/coding_contest/ladri.cpp @@ -0,0 +1,53 @@ +#include<iostream> +#include<fstream> +#include<vector> + +using namespace std; + +int main() { + ifstream in("input.txt"); + ofstream out("output.txt"); + + for(short _ = 0; _ < 100; ++_) { + int N, K, M; + in >> N >> K >> M; + int* path = new int[N+1]; + int i; + for(i = 0; i < N; ++i) + in >> path[i]; + + path[i] = M; + int start = 0; + vector<int> values; + /* 1 31 33 38 62 69 93 97 98 99 */ + /* x x x x x x + * K = 30 + */ + for(int i = 0; i < N+1; ++i) { + if(path[i] - start > K) { + for(int j = i-1; j >= 0; --j) { + if(path[i] - path[j] <= K) { + values.push_back(path[j]); + start = path[j]; + i = j; + break; + } + } + } + } + + // Stampa la path corretta per debug + for(auto const& i: values) + cout << i << ' '; + + cout << endl; + out << values.size() << endl; + delete[] path; + } + + + out.close(); + in.close(); + + return 0; +} diff --git a/Year_1/Programming_2/coding_contest/pizzini.cpp b/Year_1/Programming_2/coding_contest/pizzini.cpp new file mode 100644 index 0000000..4fcb4ab --- /dev/null +++ b/Year_1/Programming_2/coding_contest/pizzini.cpp @@ -0,0 +1,48 @@ +#include<iostream> +#include<fstream> +#include<vector> + +using namespace std; + +void get_fib(vector<int> &v, int N) { + int a = v.at(0); + int b = v.at(1); + while(b <= N) { + a += b; + v.push_back(a); + swap(a, b); + } + v.pop_back(); +} + +int main() { + ifstream in("input.txt"); + ofstream out("output.txt"); + + for(short _ = 0; _ < 100; ++_) { + int N; + in >> N; + vector<int> fib {1, 2}; + get_fib(fib, N); + vector<int> seq(fib.size(), 0); + + int sum{}; + for(int i = fib.size()-1; i >= 0; --i) { + if(fib.at(i) + sum > N) continue; + + sum += fib.at(i); + seq[i] = 1; + } + + + for(auto const& i : seq) + out << i; + + out << endl; + } + + out.close(); + in.close(); + + return 0; +} diff --git a/Year_1/Programming_2/coding_contest/scheletri.cpp b/Year_1/Programming_2/coding_contest/scheletri.cpp new file mode 100644 index 0000000..2389d25 --- /dev/null +++ b/Year_1/Programming_2/coding_contest/scheletri.cpp @@ -0,0 +1,56 @@ +#include<iostream> +#include<fstream> +#include<vector> +#include<algorithm> + +using namespace std; + +int find_i(int index, vector<int> cms) { + for(int i = index; i < cms.size(); ++i) { + if(cms.at(i) != 0) + return i; + } + + return 0; +} + +int find_j(int index, vector<int> cms) { + for(int j = index; j < cms.size()-1; ++j) { + if(cms.at(j+1) == 0) + return j+1; + } + + return cms.size(); +} + +int main() { + ifstream in("input.txt"); + ofstream out("output.txt"); + + short N; + for(int __c = 0; __c < 100; ++__c) { + in >> N; + vector<int> cms; + int el; + for(short i = 0; i < N; ++i) { + in >> el; + cms.push_back(el); + } + + int counter{}; + int i{}, j{}; + while(count_if(begin(cms), end(cms), [](int num) { return num == 0; } ) != cms.size() ) { + i = find_i(i, cms); + j = find_j(i, cms); + for(int ii = i; ii < j; ++ii) { + --cms[ii]; + } + ++counter; + } + out << counter << endl; + } + + out.close(); + in.close(); + return 0; +} diff --git a/Year_1/Programming_2/coding_contest/stazioni.cpp b/Year_1/Programming_2/coding_contest/stazioni.cpp new file mode 100644 index 0000000..29ede44 --- /dev/null +++ b/Year_1/Programming_2/coding_contest/stazioni.cpp @@ -0,0 +1,82 @@ +#include<iostream> +#include<fstream> +#include<algorithm> +#include<vector> + +using namespace std; + +int main() { + ifstream in("input.txt"); + ofstream out("output.txt"); + + for(int ts = 0; ts < 1; ++ts) { + int N, S; + in >> N >> S; + vector<long> st; + vector<vector<long>> paths; + vector<vector<long>> paths2; + vector<vector<long>> paths3; + + int e; + for(int i = 0; i < N; ++i) { + in >> e; + st.push_back(e); + } + + int index{}; + for(int i = 0; i < N-S+1; ++i) { + for(int j = 0; j < N; ++j) { + paths.push_back(vector<long>{}); + paths[index].push_back(i); + for(int k = j; paths[index].size() < S; ++k) { + int t = (k == N) ? 0 : k; + if(k > N) break; + paths[index].push_back(t); + } + sort(begin(paths[index]), end(paths[index])); + if(paths[index].size() == S) + paths2.push_back(paths[index]); + ++index; + } + } + for(int i = 0; i < paths2.size(); ++i) { + bool check{true}; + if(paths2[i].size() != S) continue; + for(int j = 0; j < paths2[i].size()-1; ++j) { + if(paths2[i].at(j) == paths2[i].at(j+1)) { + check = false; + break; + } + } + if(check) + paths3.push_back(paths2[i]); + } + + for(auto const& i : paths3) { + for(auto const& j : i) + cout << st[j] << ' '; + + cout << endl; + } + cout << endl; + + int major{}; + for(int i = 0; i < paths3.size(); ++i) { + vector<long> diffs; + for(int j = 0; j < paths3[i].size()-1; ++j) { + int p1 = st[paths3[i][j+1]]; + int p2 = st[paths3[i][j]]; + diffs.push_back(p1 - p2); + } + int miner = *min_element(begin(diffs), end(diffs)); + if(miner > major) + major = miner; + } + cout << ts << ' ' << major << endl; + out << major << endl; + } + + in.close(); + out.close(); + return 0; +} diff --git a/Year_1/Programming_2/coding_contest/tastevin.cpp b/Year_1/Programming_2/coding_contest/tastevin.cpp new file mode 100644 index 0000000..301ebcf --- /dev/null +++ b/Year_1/Programming_2/coding_contest/tastevin.cpp @@ -0,0 +1,38 @@ +#include<iostream> +#include<fstream> +#include<vector> +#include<algorithm> + +using namespace std; + +int main() { + ifstream in("input.txt"); + ofstream out("output.txt"); + + for(int ts = 0; ts < 100; ++ts) { + int N; + in >> N; + vector<int> arr(N); + for(int i = 0; i < N; ++i) { + in >> arr.at(i); + } + + vector<int> paths(N, 1); + + for(int i = N-2; i >= 0; --i) { + int mx = 0; + for(int j = i+2; j < N; ++j) { + if(mx < paths[j] && arr[j] >= arr[i]) { + mx = paths[j]; + } + } + paths[i] += mx; + } + + out << *max_element(begin(paths), end(paths)) << '\n'; + } + + in.close(); + out.close(); + return 0; +} diff --git a/Year_1/Programming_2/coding_contest/tastevin_paths.cpp b/Year_1/Programming_2/coding_contest/tastevin_paths.cpp new file mode 100644 index 0000000..eb7da54 --- /dev/null +++ b/Year_1/Programming_2/coding_contest/tastevin_paths.cpp @@ -0,0 +1,67 @@ +// It prints all possible paths + +#include<iostream> +#include<fstream> +#include<vector> + +using namespace std; + +int main() { + ifstream in("input.txt"); + ofstream out("output.txt"); + + for(int ts = 0; ts < 100; ++ts) { + int N; + in >> N; + vector<int> arr; + int e; + for(int i = 0; i < N; ++i) { + in >> e; + arr.push_back(e); + } + + int max_value{}; + int value; + + for(int i = 0; i < N; ++i) { + vector<int> tmp; + tmp.push_back(i); + value = arr[i]; + for(int j = i+2; j < N; ++j) { + if(arr[j] >= value) { + tmp.push_back(j); + value = arr[j]; + ++j; + } + } + while(!tmp.empty()) { + if(tmp.size() > max_value) { + for(auto const&i : tmp) { + cout << i << ' '; + } + cout << endl; + max_value = tmp.size(); + } + int k = tmp.back(); + tmp.pop_back(); + if(tmp.size() > 0) + value = arr[tmp.back()]; + else + value = arr[k]; + for(int j = k+1; j < N; ++j) { + if(arr[j] >= value) { + value = arr[j]; + tmp.push_back(j); + ++j; + } + } + } + } + + out << max_value << '\n'; + } + + in.close(); + out.close(); + return 0; +} diff --git a/Year_1/Programming_2/data_structures/bfs.cc b/Year_1/Programming_2/data_structures/bfs.cc new file mode 100644 index 0000000..2b4efbd --- /dev/null +++ b/Year_1/Programming_2/data_structures/bfs.cc @@ -0,0 +1,186 @@ +#include<iostream> +#include<vector> +#include<queue> +#define W -1 +#define G 0 +#define B 1 + +using namespace std; + +template<class H> +class node { +public: + explicit node(H key, node<H>* next) : _key{key}, _next(next) {} + const H& key() const { return _key; } + H& key() { return _key; } + const node<H>*& next() const { return _next; } + node<H>*& next() { return _next; } +private: + H _key; + node<H>* _next; +}; + +template<class H> +class list { +public: + list() : _head{nullptr} {} + ~list() { + while(_head) { + auto tmp = _head; + _head = _head->next(); + delete tmp; + } + } + list<H>* push(H val) { + auto iter = _head; + while(iter && iter->next()) + iter = iter->next(); + + if(!iter) + _head = new node<H>{val, nullptr}; + else + iter->next() = new node<H>{val, nullptr}; + + return this; + } + void print() { + auto iter = _head; + while(iter) { + cout << iter->key() << ' '; + iter = iter->next(); + } + } + vector<H> as_vector() { + vector<H> v; + auto iter = _head; + while(iter) { + v.push_back(iter->key()); + iter = iter->next(); + } + return v; + } + node<H>* search(H val) { + auto iter = _head; + while(iter && iter->key() != val) { + iter = iter->next(); + } + + return iter; + } +private: + node<H>* _head; +}; + +template<class H> +class graph { +public: + +private: + int _len, _nodes, _edges; + int* _parents; + int* _distances; + H** _k; // it works like a dictionary, it saves the keys + list<int>** _adj; + int _index(H val) { + for(int i = 0; i < _nodes; ++i) + if(*_k[i] == val) return i; + + return -1; + } +public: + graph(int len) : _len{len}, _nodes{0}, _edges{0} { + _k = new H*[len]; + _adj = new list<int>*[_len]; + _parents = new int[_len]; + _distances = new int[_len]; + for(int i = 0; i < _len; ++i) { + _k[i] = nullptr; + _adj[i] = new list<int>{}; + } + } + + graph<H>* add_node(H k) { + if(_nodes == _len) return this; + if(_index(k) >= 0) return this; // node is already there + + _k[_nodes++] = new H(k); + + return this; + } + + void bfs(int s) { + int colors[_len]; + queue<int> q; + + for(int i = 0; i < _nodes; ++i) { + colors[i] = W; + _parents[i] = -1; + _distances[i] = 999999999; + } + q.push(s); + colors[s] = G; + _distances[s] = 0; + while(!q.empty()) { + int x = q.front(); + q.pop(); + for(auto const& j : _adj[x]->as_vector()) { + if(colors[j] == W) { + colors[j] = G; + q.push(j); + _parents[j] = x; + _distances[j] = _distances[x] + 1; + } + } + colors[x] = B; + } + + for(int i = 0; i < _nodes; ++i) { + cout << "[" << i << "]->"; + if(_distances[i]==999999999) cout << "inf." << endl; + else cout << _distances[i] << endl; + } + } + + void bfs(H x) { + int s = _index(x); + if(s != -1) + bfs(s); + } + + graph<H>* add_edge(H x, H y) { + int i = _index(x); + int j = _index(y); + if(i < 0 || j < 0) return this; + + if(!_adj[i]->search(j)) { + _adj[i]->push(j); + _edges++; + } + + return this; + } + + void print() { + for(int i = 0; i < _nodes; ++i) { + cout << "(" << i << ", " << *_k[i] << "): "; + for(auto const& j : _adj[i]->as_vector()) + cout << "(" << j << ", " << *_k[j] << "), "; + cout << '\n'; + } + } +}; + + +int main() { + graph<string>* g = new graph<string>(5); + g->add_node("hello")->add_node("greg")->add_node("yes"); + g->add_node("nop")->add_node("ok"); + g->add_edge("hello", "ok"); + g->add_edge("ok", "yes")->add_edge("yes", "ok")->add_edge("yes", "yes"); + g->add_edge("yes", "nop"); + g->print(); + g->bfs("hello"); + + delete g; + return 0; +} diff --git a/Year_1/Programming_2/data_structures/bst.cc b/Year_1/Programming_2/data_structures/bst.cc new file mode 100644 index 0000000..9223e04 --- /dev/null +++ b/Year_1/Programming_2/data_structures/bst.cc @@ -0,0 +1,225 @@ +#include<iostream> + +using namespace std; + +template<class T> +struct node { + T key; + node<T>* prev; + node<T>* right; + node<T>* left; +}; + +template<class T> +class bst { +public: + bst() : root{nullptr} {} + + ~bst() { + // TODO + } + + bst<T>* insert(initializer_list<T>&& list) { + for(auto const& i : list) + insert(i); + + return this; + } + + bst<T>* insert(T k) { + node<T>* nodus = new node<T>{k, nullptr, nullptr, nullptr}; + node<T>* iter = root; + node<T>* prev = nullptr; + + while(iter) { + prev = iter; + iter = (k < iter->key) ? iter->left : iter->right; + } + + nodus->prev = prev; + if(!prev) + root = nodus; + else if(k < prev->key) + prev->left = nodus; + else + prev->right = nodus; + + return this; + } + + bst<T>* remove(initializer_list<T>&& list) { + for(auto const& i : list) + remove(i); + + return this; + } + + bst<T>* remove(T k) { + node<T>* nodus = search(k); + if(!nodus) return this; + + if(!nodus->left) { + _transplant(nodus, nodus->right); + } else if(!nodus->right) { + _transplant(nodus, nodus->left); + } else { + node<T>* iter = _min(nodus->right); + if(iter->prev != nodus) { + _transplant(iter, iter->right); + iter->right = nodus->right; + iter->right->prev = iter; + } + _transplant(nodus, iter); + iter->left = nodus->left; + iter->left->prev = iter; + } + + delete nodus; + return this; + } + + node<T>* min() { + return _min(root); + } + + node<T>* min(node<T>* nodus) { + return _min(nodus); + } + + node<T>* max() { + return _max(root); + } + + node<T>* max(node<T>* nodus) { + return _max(nodus); + } + + node<T>* search(T k) { + node<T>* iter = root; + while(iter && iter->key != k) + iter = (iter->key > k) ? iter->left : iter->right; + + return iter; + } + + node<T>* successor(T k) { + node<T>* nodus = search(k); + if(!nodus) return nullptr; + + if(nodus->right) + return min(nodus->right); + + node<T>* prev = nodus->prev; + while(prev && nodus == prev->right) { + nodus = prev; + prev = prev->prev; + } + + return prev; + + } + node<T>* predecessor(T k) { + node<T>* nodus = search(k); + if(!nodus) return nullptr; + + if(nodus->left) + return max(nodus->left); + + node<T>* prev = nodus->prev; + while(prev && nodus == prev->left) { + nodus = prev; + prev = prev->prev; + } + + return prev; + } + + friend ostream& operator<<(ostream& os, bst<T>* tree) { + tree->_preorder(os, tree->root); + return os; + } +private: + void _transplant(node<T>* u, node<T>* v) { + if(!u->prev) { + root = v; + } else if(u == u->prev->left) { + u->prev->left = v; + } else { + u->prev->right = v; + } + + if(v) + v->prev = u->prev; + } + + node<T>* _min(node<T>* root) { + node<T>* iter = root; + while(iter && iter->left) + iter = iter->left; + + return iter; + } + + node<T>* _max(node<T>* root) { + node<T>* iter = root; + while(iter && iter->right) + iter = iter->right; + + return iter; + } + + void _inorder(ostream& os, node<T>* root) { + if(root) { + _inorder(os, root->left); + os << root->key << ' '; + _inorder(os, root->right); + } + } + + void _preorder(ostream& os, node<T>* root) { + if(root) { + os << root->key << ' '; + _inorder(os, root->left); + _inorder(os, root->right); + } + } + + void _postorder(ostream& os, node<T>* root) { + if(root) { + _inorder(os, root->left); + _inorder(os, root->right); + os << root->key << ' '; + } + } + node<T>* root; +}; + +int main() { + bst<int>* b = new bst<int>{}; + + // b->insert(12)->insert(5)->insert(18)->insert(2)->insert(9); + // b->insert(15)->insert(13)->insert(17)->insert(19); + + b->insert({12, 5, 18, 2, 9, 15, 13, 17, 19}); + cout << b << endl; + cout << (b->search(5) != nullptr) << endl; + cout << (b->search(1) != nullptr) << endl; + cout << b->max()->key << ' ' << b->min()->key << endl; + for(auto const& i : {12, 9, 14, 18}) { + auto elem = b->successor(i); + if(elem) + cout << "(" << i << ", " << elem->key << ") "; + } + cout << endl; + + for(auto const& i : {9, 2, 5, 15, 18, 12, 19}) { + auto elem = b->predecessor(i); + if(elem) + cout << "(" << i << ", " << elem->key << ") "; + } + cout << endl; + b->remove({5, 12}); + cout << b << endl; + + return 0; +} diff --git a/Year_1/Programming_2/data_structures/circle_double_list.cc b/Year_1/Programming_2/data_structures/circle_double_list.cc new file mode 100644 index 0000000..f162e57 --- /dev/null +++ b/Year_1/Programming_2/data_structures/circle_double_list.cc @@ -0,0 +1,185 @@ +#include<iostream> + +using namespace std; + +template<typename T> +struct node { + T value; + node* prev; + node* next; +}; + + +template<typename T> +class list { +public: + list() : _head{nullptr} {} + + ~list() { + node<T>* iter = _head; + while(iter->next != _head) { + node<T>* tmp = iter; + delete tmp; + iter = iter->next; + } + node<T>* tmp = iter; + delete tmp; + } + + list* push_front(T val) { + auto elem = _last(); + if(!_head) { + _head = new node<T>{val, nullptr, nullptr}; + _head->prev = _head->next = _head; + } else { + _head = new node<T>{val, elem, _head}; + elem->next = _head->next->prev = _head; + } + + return this; + } + + list* push_back(T val) { + if(!_head) return this->push_front(val); + + auto last_e = _last(); + last_e->next = new node<T>{val, last_e, _head}; + _head->prev = last_e->next; + + return this; + } + + list* push_after_value(T val, T newval) { + node<T>* iter = _search(val); + if(iter) { + node<T>* nod = new node<T>{newval, iter, iter->next}; + iter->next = nod; + nod->next->prev = nod; + } + + return this; + } + + list* push_before_value(T val, T newval) { + node<T>* elem = _search(val); + if(!elem) return this; + + node<T>* iter = _head; + + if(iter->value == val) + return this->push_front(newval); + + while(iter->next != elem) + iter = iter->next; + + node<T>* nod = new node<T>{newval, iter, iter->next}; + iter->next = nod; + nod->next->prev = nod; + + return this; + } + + list* pop(int val) { + node<T>* elem = _search(val); + if(!elem) return this; + + if(elem == _head) return this->pop_front(); + + node<T>* iter = elem->prev; + node<T>* temp = iter->next; + iter->next = iter->next->next; + iter->next->prev = iter; + delete temp; + + return this; + } + + list* pop_front() { + if(!_head) + return this; + + auto last_e = _last(); + node<T>* elem = _head; + _head = _head->next; + _head->prev = last_e; + last_e->next = _head; + delete elem; + + return this; + } + + list* pop_back() { + if(!_head) + return this; + + auto last_e = _last(); + + if(last_e == _head) { + delete _head; + _head = nullptr; + } else { + auto iter = last_e->prev; + delete iter->next; + iter->next = _head; + _head->prev = iter; + } + + return this; + } + + void print() { + node<T>* iter = _head; + while(iter != nullptr) { + cout << iter->value << ' '; + cout << "[[ " << iter->prev->value << ", "; + cout << iter->next->value << " ]], "; + iter = iter->next; + if(iter == _head) break; + } + } +private: + node<T>* _last() { + node<T>* iter = _head; + while(iter && iter->next != _head) { + iter = iter->next; + } + + return iter; + } + + node<T>* _search(T val) { + node<T>* iter = _head; + if(iter->value == val) return iter; + + while(iter && iter->value != val) { + iter = iter->next; + if(iter == _head) return nullptr; + } + + return iter; + } + + node<T>* _head; +}; + +int main() { + list<int>* l = new list<int>{}; + l->push_front(2); + l->push_back(1)->push_back(3); + l->push_front(5)->push_front(9); + l->push_back(0)->push_back(6); + l->print(); cout << '\n'; + l->push_after_value(7, -2); + l->push_before_value(9, 10); + l->print(); cout << '\n'; + l->pop_front(); + l->pop_front(); + l->pop_back(); + l->pop_front(); + l->print(); cout << '\n'; + l->pop(2); + l->print(); cout << '\n'; + + delete l; + return 0; +} diff --git a/Year_1/Programming_2/data_structures/circle_list.cc b/Year_1/Programming_2/data_structures/circle_list.cc new file mode 100644 index 0000000..2143ac1 --- /dev/null +++ b/Year_1/Programming_2/data_structures/circle_list.cc @@ -0,0 +1,189 @@ +#include<iostream> + +using namespace std; + +template<typename T> +struct node { + T value; + node* next; +}; + + +template<typename T> +class list { +public: + list() : _head{nullptr} {} + + ~list() { + node<T>* iter = _head; + while(iter->next != _head) { + node<T>* tmp = iter; + delete tmp; + iter = iter->next; + } + node<T>* tmp = iter; + delete tmp; + } + + list* push_front(T val) { + auto elem = _last(); + _head = new node<T>{val, _head}; + if(!elem) + elem = _head; + + elem->next = _head; + + return this; + } + + list* push_back(T val) { + if(!_head) return this->push_front(val); + + auto last_e = _last(); + last_e->next = new node<T>{val, _head}; + + return this; + } + + list* push_after_value(T val, T newval) { + node<T>* iter = _search(val); + if(iter) + iter->next = new node<T>{newval, iter->next}; + + return this; + } + + list* push_before_value(T val, T newval) { + node<T>* elem = _search(val); + if(!elem) return this; + + node<T>* iter = _head; + + if(iter->value == val) + return this->push_front(newval); + + while(iter->next != elem) + iter = iter->next; + + iter->next = new node<T>{newval, iter->next}; + + return this; + } + + list* pop(int val) { + node<T>* elem = _search(val); + if(!elem) return this; + + node<T>* iter = _head; + if(iter == elem) return this->pop_front(); + + while(iter->next != elem) + iter = iter->next; + + node<T>* temp = iter->next; + iter->next = iter->next->next; + delete temp; + + return this; + } + + list* pop_front() { + if(!_head) + return this; + + auto last_e = _last(); + + if(last_e == _head) { + delete _head; + _head = nullptr; + } else { + node<T>* elem = _head; + _head = _head->next; + last_e->next = _head; + delete elem; + } + + return this; + } + + list* pop_back() { + if(!_head) + return this; + + node<T>* iter = _head; + auto last_e = _last(); + + if(last_e == _head) { + delete iter; + _head = nullptr; + } else { + while(iter->next != last_e) { + iter = iter->next; + } + + delete iter->next; + iter->next = _head; + } + + return this; + } + + void print() { + node<T>* iter = _head; + while(iter) { + cout << iter->value << ' '; + iter = iter->next; + if(iter == _head) break; + } + } +private: + node<T>* _last() { + node<T>* iter = _head; + while(iter && iter->next != _head) { + iter = iter->next; + } + + return iter; + } + + node<T>* _search(T val) { + node<T>* iter = _head; + if(iter->value == val) return iter; + + while(iter && iter->value != val) { + iter = iter->next; + if(iter == _head) return nullptr; + } + + return iter; + } + + node<T>* _head; +}; + +int main() { + list<int>* l = new list<int>{}; + l->push_before_value(4, 1); + l->push_back(4); + l->push_back(1); + l->push_back(0); + l->push_front(2); + l->print(); cout << endl; + l->pop_back(); + l->print(); cout << endl; + l->pop_front(); + l->print(); cout << endl; + l->pop_back(); + l->print(); cout << endl; + l->push_front(3); + l->print(); cout << endl; + l->push_after_value(4, 7); + l->print(); cout << endl; + l->push_before_value(3, 5); + l->print(); cout << endl; + l->pop(5); + l->print(); cout << endl; + + delete l; + return 0; +} diff --git a/Year_1/Programming_2/data_structures/dfs.cc b/Year_1/Programming_2/data_structures/dfs.cc new file mode 100644 index 0000000..744f153 --- /dev/null +++ b/Year_1/Programming_2/data_structures/dfs.cc @@ -0,0 +1,191 @@ +#include<iostream> +#include<vector> +#include<queue> +#define W -1 +#define G 0 +#define B 1 + +using namespace std; + +template<class H> +class node { +public: + explicit node(H key, node<H>* next) : _key{key}, _next(next) {} + const H& key() const { return _key; } + H& key() { return _key; } + const node<H>*& next() const { return _next; } + node<H>*& next() { return _next; } +private: + H _key; + node<H>* _next; +}; + +template<class H> +class list { +public: + list() : _head{nullptr} {} + ~list() { + while(_head) { + auto tmp = _head; + _head = _head->next(); + delete tmp; + } + } + list<H>* push(H val) { + auto iter = _head; + while(iter && iter->next()) + iter = iter->next(); + + if(!iter) + _head = new node<H>{val, nullptr}; + else + iter->next() = new node<H>{val, nullptr}; + + return this; + } + void print() { + auto iter = _head; + while(iter) { + cout << iter->key() << ' '; + iter = iter->next(); + } + } + vector<H> as_vector() { + vector<H> v; + auto iter = _head; + while(iter) { + v.push_back(iter->key()); + iter = iter->next(); + } + return v; + } + node<H>* search(H val) { + auto iter = _head; + while(iter && iter->key() != val) { + iter = iter->next(); + } + + return iter; + } +private: + node<H>* _head; +}; + +template<class H> +class graph { +private: + int _len, _nodes, _edges; + int* _parents; + int* _radixes; + int* _distances; + int* _finishes; + int* _colors; + int _time; + int _current; + H** _k; // it works like a dictionary, it saves the keys + list<int>** _adj; + int _index(H val) { + for(int i = 0; i < _nodes; ++i) + if(*_k[i] == val) return i; + + return -1; + } + void _dfsvisit(int u) { + _colors[u] = G; + _distances[u] = _time++; + _radixes[u] = _current; + for(auto const& v : _adj[u]->as_vector()) { + if(_colors[v] == W) { + _parents[v] = u; + _dfsvisit(v); + } + } + _colors[u] = B; + _finishes[u] = _time++; + } +public: + graph(int len) : _len{len}, _nodes{0}, _edges{0} { + _k = new H*[len]; + _adj = new list<int>*[_len]; + _parents = new int[_len]; + _radixes = new int[_len]; + _distances = new int[_len]; + _finishes = new int[_len]; + _colors = new int[_len]; + for(int i = 0; i < _len; ++i) { + _k[i] = nullptr; + _adj[i] = new list<int>{}; + } + } + + graph<H>* add_node(H k) { + if(_nodes == _len) return this; + if(_index(k) >= 0) return this; // node is already there + + _k[_nodes++] = new H(k); + + return this; + } + + + void dfs() { + _time = 0; + for(int i = 0; i < _nodes; ++i) { + _colors[i] = W; + _parents[i] = -1; + } + + for(int i = 0; i < _nodes; ++i) { + if(_colors[i] == W) { + _current = i; + _dfsvisit(i); + } + } + for(int i = 0; i < _nodes; ++i) { + cout << *_k[i] << "(" << _distances[i]+1 << ',' << _finishes[i]+1 << ")" << endl; + } + } + + graph<H>* add_edge(H x, H y) { + int i = _index(x); + int j = _index(y); + if(i < 0 || j < 0) return this; + + if(!_adj[i]->search(j)) { + _adj[i]->push(j); + _edges++; + } + + return this; + } + + void print() { + for(int i = 0; i < _nodes; ++i) { + cout << "(" << i << ", " << *_k[i] << "): "; + for(auto const& j : _adj[i]->as_vector()) + cout << "(" << j << ", " << *_k[j] << "), "; + cout << '\n'; + } + } +}; + + +int main() { + graph<char>* g = new graph<char>(6); + g->add_node('u')->add_node('v')->add_node('x')->add_node('y'); + g->add_node('w')->add_node('z'); + g->add_edge('u', 'v'); + g->add_edge('u', 'x'); + g->add_edge('x', 'v'); + g->add_edge('y', 'x'); + g->add_edge('v', 'y'); + g->add_edge('w', 'y'); + g->add_edge('w', 'z'); + g->add_edge('z', 'z'); + + g->print(); + g->dfs(); + + delete g; + return 0; +} diff --git a/Year_1/Programming_2/data_structures/graph.cc b/Year_1/Programming_2/data_structures/graph.cc new file mode 100644 index 0000000..12837be --- /dev/null +++ b/Year_1/Programming_2/data_structures/graph.cc @@ -0,0 +1,164 @@ +#include<iostream> +#include<vector> + +using namespace std; + +template<class H> +class node { +public: + explicit node(H key, node<H>* next) : _key{key}, _next(next) {} + const H& key() const { return _key; } + H& key() { return _key; } + const node<H>*& next() const { return _next; } + node<H>*& next() { return _next; } +private: + H _key; + node<H>* _next; +}; + +template<class H> +class list { +public: + list() : _head{nullptr} {} + ~list() { + while(_head) { + auto tmp = _head; + _head = _head->next(); + delete tmp; + } + } + list<H>* push(H val) { + auto iter = _head; + while(iter && iter->next()) + iter = iter->next(); + + if(!iter) + _head = new node<H>{val, nullptr}; + else + iter->next() = new node<H>{val, nullptr}; + + return this; + } + list<H>* pop(H val) { + auto elem = search(val); + if(!elem) + return this; + + auto iter = _head; + // This is the case when head is the element we want to pop + if(iter == elem) { + delete _head; + _head = nullptr; + return this; + } + + while(iter && iter->next() != elem) + iter = iter->next(); + + auto tmp = iter->next(); + if(iter->next()->next()) { + iter->next() = iter->next()->next(); + } else { // the element we want to pop is the tail + iter->next() = nullptr; + } + delete tmp; + + return this; + } + void print() { + auto iter = _head; + while(iter) { + cout << iter->key() << ' '; + iter = iter->next(); + } + } + vector<H> as_vector() { + vector<H> v; + auto iter = _head; + while(iter) { + v.push_back(iter->key()); + iter = iter->next(); + } + return v; + } + node<H>* search(H val) { + auto iter = _head; + while(iter && iter->key() != val) { + iter = iter->next(); + } + + return iter; + } +private: + node<H>* _head; +}; + +template<class H> +class graph { +public: + +private: + int _len, _nodes, _edges; + H **_k; + list<int> **_adj; + int _index(H val) { + for(int i = 0; i < _nodes; ++i) + if(*_k[i] == val) return i; + + return -1; + } +public: + graph(int len) : _len{len}, _nodes{0}, _edges{0} { + _k = new H*[len]; + _adj = new list<int>*[_len]; + for(int i = 0; i < _len; ++i) { + _k[i] = nullptr; + _adj[i] = new list<int>{}; + } + } + + graph<H>* add_node(H k) { + if(_nodes == _len) return this; + if(_index(k) >= 0) return this; // node is already there + + _k[_nodes++] = new H(k); + + return this; + } + + graph<H>* add_edge(H x, H y) { + int i = _index(x); + int j = _index(y); + if(i < 0 || j < 0) return this; + + if(!_adj[i]->search(j)) { + _adj[i]->push(j); + _edges++; + } + + return this; + } + + void print() { + for(int i = 0; i < _nodes; ++i) { + cout << "(" << i << ", " << *_k[i] << "): "; + for(auto const& j : _adj[i]->as_vector()) + cout << "(" << j << ", " << *_k[j] << "), "; + cout << '\n'; + } + } +}; + + +int main() { + graph<string>* g = new graph<string>(5); + g->add_node("hello")->add_node("greg")->add_node("yes"); + g->add_node("nop")->add_node("ok"); + g->add_edge("hello", "ok"); + g->add_edge("ok", "yes")->add_edge("yes", "ok")->add_edge("yes", "yes"); + g->add_edge("yes", "nop"); + g->print(); + + delete g; + return 0; +} diff --git a/Year_1/Programming_2/data_structures/graph_stl.cc b/Year_1/Programming_2/data_structures/graph_stl.cc new file mode 100644 index 0000000..5381747 --- /dev/null +++ b/Year_1/Programming_2/data_structures/graph_stl.cc @@ -0,0 +1,221 @@ +#include<iostream> +#include<vector> +#include<algorithm> +#include<queue> +#include<stack> +#define INF 99999999 +#define W -1 +#define G 0 +#define B 1 + +using namespace std; + +template<class H> +class graph { +public: + graph(int len) : _len{len}, _nodes{0}, _edges{0} { + _k = new H*[len]; + _adj = new vector<int>[len]; + _colors = new int[len]; + _d = new int[len]; + _f = new int[len]; + _p = new int[len]; + + for(int i = 0; i < len; ++i) { + _k[i] = nullptr; + } + } + ~graph() { + delete[] _k; + delete[] _adj; + } + + graph<H>* add_node(H x) { + if(_index(x) > -1) return this; + if(_nodes == _len) return this; + _k[_nodes++] = new H(x); + + return this; + } + graph<H>* add_edge(H u, H v) { + int i = _index(u); + int j = _index(v); + if(i < 0 || j < 0) return this; + + if(find(_adj[i].begin(), _adj[i].end(), j) == _adj[i].end()) { + _adj[i].push_back(j); + } + return this; + } + void print() { + for(int i = 0; i < _nodes; ++i) { + cout << "(" << *_k[i] << ", " << i << "): "; + for(auto const& j : _adj[i]) { + cout << "(" << *_k[j] << ", " << j << ") "; + } + cout << endl; + } + } + void dfsvisit(int u, bool visited[]) { + visited[u] = true; + cout << "(" << *_k[u] << ", " << u << ") "; + for(auto const& i : _adj[u]) { + if(!visited[i]) + dfsvisit(i, visited); + } + } + int dfsvisit(int u) { + int cycle = 0; + _colors[u] = G; + _d[u] = _time++; + + for(auto const& j : _adj[u]) { + if(_colors[j] == W) + cycle |= dfsvisit(j); + } + + _colors[u] = B; + _stack.push(u); + _f[u] = _time++; + return cycle; + } + int dfs() { + int cycle = 0; + for(int i = 0; i < _nodes; ++i) { + _colors[i] = W; + } + _time = 0; + for(int i = 0; i < _nodes; ++i) { + if(_colors[i] == W) + cycle |= dfsvisit(i); + else if(_colors[i] == G) + cycle = 1; + } + for(int i = 0; i < _nodes; ++i) { + cout << "(" << *_k[i] << ", " << i << "): [" << _d[i] << "," << _f[i] << "]" << endl; + } + return cycle; + } + + void top_sort() { + int cycle = dfs(); + if(cycle) { + cout << "cyclic graph!" << endl; + return; + } + int* s = new int[_nodes]; + for(int i = 0; i < _nodes; ++i) s[i] = i; + _sort(s, _nodes, _f); + for(int i = 0; i < _nodes; ++i) { + cout << "(" << s[i] << ", " << _f[s[i]] << ") "; + } + + } + + void bfs(H v) { + int s = _index(v); + if(s < 0) return; + + for(int i = 0; i < _nodes; ++i) { + _colors[i] = W; + _d[i] = INF; + _p[i] = -1; + } + _colors[s] = G; + _d[s] = 0; + queue<int> q; + q.push(s); + while(!q.empty()) { + int u = q.front(); + q.pop(); + for(auto const& j : _adj[u]) { + if(_colors[j] == W) { + _colors[j] = G; + _d[j] = _d[u]+1; + _p[j] = u; + q.push(j); + } + } + _colors[u] = B; + } + for(int i = 0; i < _nodes; ++i) { + cout << "(" << *_k[i] << ", " << i << "): [" << _d[i] << "]" << endl; + } + } + void ssc() { + dfs(); + cout << endl << endl; + auto gr = _transpose(); + bool* visited = new bool[_nodes]; + for(int i = 0; i < _nodes; ++i) + visited[i] = false; + + while(!_stack.empty()) { + int v = _stack.top(); + _stack.pop(); + if(!visited[v]) { + gr->dfsvisit(v, visited); + cout << endl; + } + } + delete[] visited; + } +private: + graph<H>* _transpose() { + graph<H>* g = new graph<H>{_len}; + for(int i = 0; i < _nodes; ++i) { + g->add_node(*_k[i]); + } + + for(int i = 0; i < _nodes; ++i) { + for(auto const& j : _adj[i]) { + g->add_edge(j, i); + } + } + + return g; + } + void _sort(int* d, int n, int* s) { + for(int i = -1; i < n; ++i) { + int j = i-1; + while(j > -1 && s[d[j+1]]>s[d[j]]) { + swap(d[s[j+1]], d[s[j]]); + --j; + } + } + } + int _index(H x) { + for(int i = 0; i < _nodes; ++i) + if(*_k[i] == x) return i; + + return -1; + } + stack<int> _stack; + H** _k; + vector<int>* _adj; + int _len, _nodes, _edges; + int* _colors; + int _time; + int* _d; + int* _f; + int* _p; +}; + +int main() { + graph<int>* g = new graph<int>{5}; + for(auto const& i : {0, 1, 2, 3, 4}) + g->add_node(i); + g->add_edge(1, 0); + g->add_edge(2, 1); + g->add_edge(0, 2); + g->add_edge(0, 3); + g->add_edge(3, 4); + //g->print(); + cout << endl; + //g->top_sort(); + g->ssc(); + cout << endl; + //g->bfs(0); + delete g; + return 0; +} diff --git a/Year_1/Programming_2/data_structures/list.cc b/Year_1/Programming_2/data_structures/list.cc new file mode 100644 index 0000000..8ddcbf9 --- /dev/null +++ b/Year_1/Programming_2/data_structures/list.cc @@ -0,0 +1,164 @@ +#include<iostream> + +using namespace std; + +template<typename T> +struct node { + T value; + node* next; +}; + + +template<typename T> +class list { +public: + list() : _head{nullptr} {} + + ~list() { + while(_head) { + node<T>* tmp = _head->next; + delete tmp; + _head = tmp; + } + } + + list* push_front(T val) { + _head = new node<T>{val, _head}; + + return this; + } + + list* push_back(T val) { + if(!_head) return this->push_front(val); + + node<T>* iter = _head; + while(iter->next) { + iter = iter->next; + } + iter->next = new node<T>{val, nullptr}; + + return this; + } + + list* push_after_value(T val, T newval) { + node<T>* iter = _search(val); + if(iter) + iter->next = new node<T>{newval, iter->next}; + + return this; + } + + list* push_before_value(T val, T newval) { + node<T>* elem = _search(val); + if(!elem) return this; + + node<T>* iter = _head; + + if(iter->value == val) + return this->push_front(newval); + + while(iter->next != elem) + iter = iter->next; + + iter->next = new node<T>{newval, iter->next}; + + return this; + } + + list* pop(int val) { + node<T>* elem = _search(val); + if(!elem) return this; + + node<T>* iter = _head; + if(iter == elem) return this->pop_front(); + + while(iter->next != elem) + iter = iter->next; + + node<T>* temp = iter->next; + iter->next = iter->next->next; + delete temp; + + return this; + } + + list* pop_front() { + if(!_head) + return this; + + node<T>* elem = _head; + _head = _head->next; + delete elem; + + return this; + } + + list* pop_back() { + if(!_head) + return this; + + node<T>* iter = _head; + + while(iter->next && iter->next->next) { + iter = iter->next; + } + + if(!iter->next) { + delete iter; + _head = nullptr; + } else if(iter->next->next) { + delete iter->next->next; + } else { + delete iter->next; + } + + iter->next = nullptr; + + return this; + } + + void print() { + node<T>* iter = _head; + while(iter) { + cout << iter->value << ' '; + iter = iter->next; + } + } +private: + node<T>* _search(T value) { + node<T>* iter = _head; + while(iter && iter->value != value) + iter = iter->next; + + return iter; + } + + node<T>* _head; +}; + +int main() { + list<int>* l = new list<int>{}; + l->push_front(2)->push_front(1); + l->print(); cout << endl; + l->push_back(5); + l->print(); cout << endl; + l->push_back(10)->push_back(15); + l->print(); cout << endl; + l->push_after_value(5, 6); + l->print(); cout << endl; + l->push_before_value(5, 4); + l->print(); cout << endl; + l->push_before_value(4, 3); + l->print(); cout << endl; + l->pop_back(); + l->print(); cout << endl; + l->pop_front(); + l->print(); cout << endl; + l->push_front(1); + l->print(); cout << endl; + l->pop(1); + l->print(); cout << endl; + + delete l; + return 0; +} diff --git a/Year_1/Programming_2/data_structures/list_double.cc b/Year_1/Programming_2/data_structures/list_double.cc new file mode 100644 index 0000000..fa0af26 --- /dev/null +++ b/Year_1/Programming_2/data_structures/list_double.cc @@ -0,0 +1,182 @@ +#include<iostream> + +using namespace std; + +template<typename T> +struct node { + T value; + node* prev; + node* next; +}; + + +template<typename T> +class list { +public: + list() : _head{nullptr} {} + + ~list() { + while(_head != nullptr) { + node<T>* tmp = _head->next; + delete tmp; + _head = tmp; + } + } + + list* push_front(T val) { + if(!_head) { + _head = new node<T>{val, nullptr, nullptr}; + } else { + _head = new node<T>{val, nullptr, _head}; + _head->next->prev = _head; + } + + return this; + } + + list* push_back(T val) { + if(!_head) return this->push_front(val); + + node<T>* iter = _head; + while(iter->next) { + iter = iter->next; + } + iter->next = new node<T>{val, iter, nullptr}; + + return this; + } + + list* push_after_value(T val, T newval) { + node<T>* elem = _search(val); + if(elem) { + node<T>* nod = new node<T>{newval, elem, elem->next}; + elem->next = nod; + nod->next->prev = nod; + } + + return this; + } + + list* push_before_value(T val, T newval) { + node<T>* elem = _search(val); + if(!elem) return this; + + node<T>* iter = _head; + + if(iter->value == val) + return this->push_front(newval); + + while(iter->next != elem) + iter = iter->next; + + node<T>* nod = new node<T>{newval, iter, iter->next}; + iter->next = nod; + nod->next->prev = nod; + + return this; + } + + list* pop(int val) { + node<T>* elem = _search(val); + if(!elem) return this; + + if(elem == _head) return this->pop_front(); + + node<T>* iter = elem->prev; + node<T>* temp = iter->next; + iter->next = iter->next->next; + iter->next->prev = iter; + delete temp; + + return this; + } + + list* pop_front() { + if(!_head) + return this; + + node<T>* elem = _head; + _head = _head->next; + _head->prev = nullptr; + delete elem; + + return this; + } + + list* pop_back() { + if(!_head) + return this; + + node<T>* iter = _last()->prev; + + if(iter->next == nullptr) { + delete iter; + _head = nullptr; + } else if(iter->next->next) { + delete iter->next->next; + } else { + delete iter->next; + } + + iter->next = nullptr; + + return this; + } + + void print() { + node<T>* iter = _head; + while(iter) { + cout << iter->value << ' '; + cout << "[[ " << (iter->prev!=nullptr ? iter->prev->value : -1) << ", "; + cout << (iter->next!=nullptr ? iter->next->value : -1) << " ]], "; + iter = iter->next; + } + } +private: + node<T>* _last() { + node<T>* iter = _head; + while(iter->next) { + iter = iter->next; + } + + return iter; + } + + node<T>* _search(T value) { + node<T>* iter = _head; + while(iter && iter->value != value) + iter = iter->next; + + return iter; + } + + node<T>* _head; +}; + +int main() { + list<int>* l = new list<int>{}; + l->push_front(2)->push_front(1); + l->print(); cout << endl; + l->push_back(5); + l->print(); cout << endl; + l->push_back(10)->push_back(15); + l->print(); cout << endl; + l->push_after_value(5, 6); + l->print(); cout << endl; + l->push_after_value(5, 7); + l->print(); cout << endl; + l->push_before_value(5, 4); + l->print(); cout << endl; + l->push_before_value(5, 3); + l->print(); cout << endl; + l->pop_back(); + l->print(); cout << endl; + l->pop_front(); + l->print(); cout << endl; + l->pop(2); + l->print(); cout << endl; + + delete l; + + return 0; +} diff --git a/Year_1/Programming_2/data_structures/matrix-graph.cc b/Year_1/Programming_2/data_structures/matrix-graph.cc new file mode 100644 index 0000000..a644ec1 --- /dev/null +++ b/Year_1/Programming_2/data_structures/matrix-graph.cc @@ -0,0 +1,81 @@ +#include<iostream> +#include<list> + +using namespace std; + +template<class H> +class matrix_graph { +public: + ~matrix_graph() { + delete[] _m; + delete[] _k; + } + matrix_graph(int len) : _len{len}, _nodes{0}, _edges{0} { + _m = new int*[len]; + _k = new H*[len]; + for(int i = 0; i < len; ++i) { + _m[i] = new int[len]; + _k[i] = nullptr; + for(int j = 0; j < len; ++j) + _m[i][j] = 0; + } + } + + matrix_graph<H>* add_node(H k) { + if(_len == _nodes) return this; // no more space for new nodes + if(_index(k) > -1) return this; // nodes already exists + + _k[_nodes++] = new H(k); + + return this; + } + + matrix_graph<H>* add_edge(H x, H y) { + int i = _index(x); + int j = _index(y); + if(i < 0 || j < 0) return this; + if(!_m[i][j]) { + _m[i][j] = 1; + _edges++; + } + return this; + } + void print() { + for(int i = 0; i < _len; ++i) { + cout << i << ' ' << *_k[i] << ": "; + for(int j = 0; j < _len; ++j) { + if(_m[i][j]) + cout << *_k[j] << ' '; + } + cout << '\n'; + } + cout << endl; + for(int i = 0; i < _len; ++i) { + for(int j = 0; j < _len; ++j) { + cout << _m[i][j] << ' '; + } + cout << '\n'; + } + } +private: + int _len, _nodes, _edges; + int** _m; + H** _k; + int _index(H x) { + for(int i = 0; i < _nodes; ++i) + if(*_k[i] == x) return i; + return -1; + } +}; + +int main() { + matrix_graph<string>* g = new matrix_graph<string>(5); + g->add_node("hello")->add_node("greg")->add_node("yes"); + g->add_node("nop")->add_node("ok"); + g->add_edge("hello", "ok"); + g->add_edge("ok", "yes")->add_edge("yes", "ok")->add_edge("yes", "yes"); + g->add_edge("yes", "nop"); + g->print(); + delete g; + return 0; +} diff --git a/Year_1/Programming_2/data_structures/queue.cc b/Year_1/Programming_2/data_structures/queue.cc new file mode 100644 index 0000000..8398459 --- /dev/null +++ b/Year_1/Programming_2/data_structures/queue.cc @@ -0,0 +1,72 @@ +#include<iostream> + +using namespace std; + +template<typename T> +struct node { + T value; + node<T>* next; +}; + +template<class T> +class queue { +public: + queue() : _head{nullptr} {} + + ~queue() { + auto iter = _head; + while(iter) { + delete iter; + iter = iter->next; + } + } + + queue<T>* enqueue(T val) { + + if(!_head) { + _head = new node<T>{val, nullptr}; + _tail = _head; + } else { + _tail->next = new node<T>{val, nullptr}; + _tail = _tail->next; + } + + return this; + } + + node<T>* dequeue() { + if(!_head) return nullptr; + auto iter = _head; + delete _head; + _head = iter->next; + return iter; + } + + void print() { + auto iter = _head; + while(iter) { + cout << iter->value << ' '; + iter = iter->next; + } + cout << endl; + } +private: + node<T>* _head; + node<T>* _tail; +}; + +int main() { + queue<int>* q = new queue<int>(); + + q->dequeue(); + q->enqueue(4)->enqueue(2)->enqueue(8); + q->print(); + auto e = q->dequeue(); + if(e) + cout << e->value << endl; + q->enqueue(1); + q->print(); + + delete q; + return 0; +} diff --git a/Year_1/Programming_2/data_structures/queue_w_array.cc b/Year_1/Programming_2/data_structures/queue_w_array.cc new file mode 100644 index 0000000..fb92d68 --- /dev/null +++ b/Year_1/Programming_2/data_structures/queue_w_array.cc @@ -0,0 +1,66 @@ +#include<iostream> + +using namespace std; + +template<class H> +class queue { +public: + queue(int n) : _size{n}, _counter{0}, _head{0}, _tail{0} { + _arr = new H[n]; + } + ~queue() { + delete _arr; + } + bool is_empty() { + return _counter == 0; + } + bool is_full() { + return _counter == _size; + } + + queue<H>* enqueue(H x) { + if(!is_full()) { + _arr[_tail] = x; + if(_tail == _size-1) + _tail = 0; + else + ++_tail; + _counter++; + } + + return this; + } + H dequeue() { + if(is_empty()) return -1; + H x = _arr[_head]; + + if(_head == _size-1) + _head = 0; + else + ++_head; + + _counter--; + return x; + } +private: + H* _arr; + int _size; + short _counter; + short _head; + short _tail; +}; + +int main() { + queue<int>* q = new queue<int>{4}; + q->enqueue(5)->enqueue(13)->enqueue(3); + cout << q->dequeue() << '\n'; + q->enqueue(4)->enqueue(6)->enqueue(7); + q->dequeue(); + q->enqueue(7); + + for(int i = 0; i < 6; ++i) { + cout << q->dequeue() << ' '; + } + delete q; + return 0; +} diff --git a/Year_1/Programming_2/data_structures/stack.cc b/Year_1/Programming_2/data_structures/stack.cc new file mode 100644 index 0000000..ffff780 --- /dev/null +++ b/Year_1/Programming_2/data_structures/stack.cc @@ -0,0 +1,70 @@ +#include<iostream> + +using namespace std; + +template<typename T> +struct node { + T value; + node<T>* next; +}; + +template<class T> +class stack { +public: + stack() : _head{nullptr} {} + + ~stack() { + auto iter = _head; + while(iter) { + delete iter; + iter = iter->next; + } + } + + stack<T>* push(T val) { + + if(!_head) { + _head = new node<T>{val, nullptr}; + } else { + _head = new node<T>{val, _head}; + } + + return this; + } + + node<T>* pop() { + if(!_head) return nullptr; + node<T>* elem = _head; + delete _head; + _head = elem->next; + + return elem; + } + + void print() { + auto iter = _head; + while(iter) { + cout << iter->value << ' '; + iter = iter->next; + } + cout << endl; + } +private: + node<T>* _head; +}; + +int main() { + stack<int>* s = new stack<int>(); + + s->pop(); + s->push(4)->push(2)->push(8); + s->print(); + auto e = s->pop(); + if(e) + cout << e->value << endl; + s->push(1); + s->print(); + + delete s; + return 0; +} diff --git a/Year_1/Programming_2/data_structures/stack_w_array.cc b/Year_1/Programming_2/data_structures/stack_w_array.cc new file mode 100644 index 0000000..c20db90 --- /dev/null +++ b/Year_1/Programming_2/data_structures/stack_w_array.cc @@ -0,0 +1,50 @@ +#include<iostream> + +using namespace std; + +template<class H> +class stack { +public: + stack(int n) : _size{n}, _top{-1} { + _arr = new H[n]; + } + ~stack() { + delete _arr; + } + bool is_empty() { + return _top == -1; + } + bool is_full() { + return _top == _size-1; + } + stack<H>* push(H x) { + if(!is_full()) { + _arr[++_top] = x; + } + return this; + } + H pop() { + if(is_empty()) + return -1; + _top--; + return _arr[_top+1]; + } +private: + int _size; + H* _arr; + short _top; +}; + +int main() { + stack<int>* s = new stack<int>{7}; + + s->push(15)->push(6)->push(2)->push(9)->push(17)->push(3); + cout << s->pop() << '\n'; + s->push(18)->push(19)->push(12); + + for(int i = 0; i < 7; ++i) + cout << s->pop() << ' '; + + delete s; + return 0; +} diff --git a/Year_1/Programming_2/data_structures/top-sort.cc b/Year_1/Programming_2/data_structures/top-sort.cc new file mode 100644 index 0000000..7441ee9 --- /dev/null +++ b/Year_1/Programming_2/data_structures/top-sort.cc @@ -0,0 +1,212 @@ + +#include<iostream> +#include<vector> +#include<queue> +#define W -1 +#define G 0 +#define B 1 + +using namespace std; + +template<class H> +class node { +public: + explicit node(H key, node<H>* next) : _key{key}, _next(next) {} + const H& key() const { return _key; } + H& key() { return _key; } + const node<H>*& next() const { return _next; } + node<H>*& next() { return _next; } +private: + H _key; + node<H>* _next; +}; + +template<class H> +class list { +public: + list() : _head{nullptr} {} + ~list() { + while(_head) { + auto tmp = _head; + _head = _head->next(); + delete tmp; + } + } + list<H>* push(H val) { + auto iter = _head; + while(iter && iter->next()) + iter = iter->next(); + + if(!iter) + _head = new node<H>{val, nullptr}; + else + iter->next() = new node<H>{val, nullptr}; + + return this; + } + void print() { + auto iter = _head; + while(iter) { + cout << iter->key() << ' '; + iter = iter->next(); + } + } + vector<H> as_vector() { + vector<H> v; + auto iter = _head; + while(iter) { + v.push_back(iter->key()); + iter = iter->next(); + } + return v; + } + node<H>* search(H val) { + auto iter = _head; + while(iter && iter->key() != val) { + iter = iter->next(); + } + + return iter; + } +private: + node<H>* _head; +}; + +template<class H> +class graph { +private: + int _len, _nodes, _edges; + int* _parents; + int* _radixes; + int* _distances; + int* _finishes; + int* _colors; + int _time; + int _current; + H** _k; // it works like a dictionary, it saves the keys + list<int>** _adj; + int _index(H val) { + for(int i = 0; i < _nodes; ++i) + if(*_k[i] == val) return i; + + return -1; + } + bool _dfsvisit(int u) { + bool cycle = false; + _colors[u] = G; + _distances[u] = _time++; + _radixes[u] = _current; + for(auto const& v : _adj[u]->as_vector()) { + if(_colors[v] == W) { + _parents[v] = u; + _dfsvisit(v); + } else if(_colors[v] == G) { + cycle = true; + } + } + _colors[u] = B; + _finishes[u] = _time++; + return cycle; + } +public: + graph(int len) : _len{len}, _nodes{0}, _edges{0} { + _k = new H*[len]; + _adj = new list<int>*[_len]; + _parents = new int[_len]; + _radixes = new int[_len]; + _distances = new int[_len]; + _finishes = new int[_len]; + _colors = new int[_len]; + for(int i = 0; i < _len; ++i) { + _k[i] = nullptr; + _adj[i] = new list<int>{}; + } + } + + graph<H>* add_node(H k) { + if(_nodes == _len) return this; + if(_index(k) >= 0) return this; // node is already there + + _k[_nodes++] = new H(k); + + return this; + } + + + bool dfs() { + bool cycle = 0; + _time = 0; + for(int i = 0; i < _nodes; ++i) { + _colors[i] = W; + _parents[i] = -1; + } + + for(int i = 0; i < _nodes; ++i) { + if(_colors[i] == W) { + _current = i; + cycle |= _dfsvisit(i); + } + } + for(int i = 0; i < _nodes; ++i) { + cout << *_k[i] << "(" << _distances[i]+1 << ',' << _finishes[i]+1 << ")" << endl; + } + return cycle; + } + + void top_sort() { + bool cycle = dfs(); + if(cycle) { + cerr << "Grafo ciclico\n"; + return; + } + vector<int> s(_finishes, _finishes+_nodes); + sort(begin(s), end(s)); + for(auto const& i : s) { + cout << "(" << i << ", " << _finishes[i] << ") "; + } + } + + graph<H>* add_edge(H x, H y) { + int i = _index(x); + int j = _index(y); + if(i < 0 || j < 0) return this; + + if(!_adj[i]->search(j)) { + _adj[i]->push(j); + _edges++; + } + + return this; + } + + void print() { + for(int i = 0; i < _nodes; ++i) { + cout << "(" << i << ", " << *_k[i] << "): "; + for(auto const& j : _adj[i]->as_vector()) + cout << "(" << j << ", " << *_k[j] << "), "; + cout << '\n'; + } + } +}; + + +int main() { + graph<char>* g = new graph<char>(6); + g->add_node('u')->add_node('v')->add_node('x')->add_node('y'); + g->add_node('w')->add_node('z'); + g->add_edge('u', 'v'); + g->add_edge('u', 'x'); + g->add_edge('x', 'v'); + g->add_edge('y', 'x'); + g->add_edge('v', 'y'); + g->add_edge('w', 'y'); + g->add_edge('w', 'z'); + g->add_edge('z', 'z'); + + g->print(); + g->dfs(); + g->top_sort(); + + delete g; + return 0; +} diff --git a/Year_1/Programming_2/exercises/carattere-maggiore.cc b/Year_1/Programming_2/exercises/carattere-maggiore.cc new file mode 100644 index 0000000..2e89fcd --- /dev/null +++ b/Year_1/Programming_2/exercises/carattere-maggiore.cc @@ -0,0 +1,40 @@ +#include<iostream> +#include<map> +#include<fstream> + +using namespace std; + + + +int main() { + ifstream in("input.txt"); + ofstream out("output.txt"); + + for(int ts = 0; ts < 100; ++ts) { + string line; + getline(in, line); + map<char, int> chs; + for(auto const& c : line) { + if(c == ' ') continue; + if(chs.find(c) != chs.end()) + chs[c]++; + else + chs[c] = 1; + } + int n = 0; + char c = 'a'; + for(auto const& i : chs) { + if(i.second >= n) { + if(i.first >= c) { + n = i.second; + c = i.first; + } + } + } + out << c << ' ' << n << endl; + } + + out.close(); + in.close(); + return 0; +} diff --git a/Year_1/Programming_2/exercises/dequeue.cc b/Year_1/Programming_2/exercises/dequeue.cc new file mode 100644 index 0000000..4b012c4 --- /dev/null +++ b/Year_1/Programming_2/exercises/dequeue.cc @@ -0,0 +1,137 @@ + +#include<iostream> +#include<fstream> + +using namespace std; + +template<class T> +class node { +public: + node(T key, node<T>* next) : _key{key}, _next{next} {} + node(T key) : _key{key}, _next{nullptr} {} + const T& key() const { return _key; } + T& key() { return _key; } + const node<T>*& next() const { return _next; } + node<T>*& next() { return _next; } +private: + T _key; + node<T>* _next; +}; + +template<class T> +class Coda { +public: + Coda() : _head{nullptr}, _tail{nullptr} {} + ~Coda() { + + } + Coda<T>* enqueue(T val) { + if(!_head) { + _head = new node<T>{val, nullptr}; + _tail = _head; + } else { + _tail->next() = new node<T>{val, nullptr}; + _tail = _tail->next(); + } + + return this; + } + node<T>* dequeue() { + if(!_head) return nullptr; + node<T>* elem = _head; + delete _head; + _head = elem->next(); + + return elem; + } + + bool is_empty() { return _head == nullptr; } +private: + node<T>* _head; + node<T>* _tail; +}; + +int main() { + ifstream in("input.txt"); + ofstream out("output.txt"); + + for(int ts = 0; ts < 100; ++ts) { + string t; + int n; + in >> t; + switch(t.at(0)) { + case 'b': { + Coda<bool>* queue = new Coda<bool>{}; + in >> n; + string s; + for(int i = 0; i < n; ++i) { + in >> s; + if(s.at(0) == 'i') { + queue->enqueue(s.at(1) - '0'); + } else { + queue->dequeue(); + } + } + while(!queue->is_empty()) + out << queue->dequeue()->key() << ' '; + out << endl; + break; + } + case 'd': { + Coda<double>* queue = new Coda<double>{}; + in >> n; + string s; + for(int i = 0; i < n; ++i) { + in >> s; + if(s.at(0) == 'i') { + queue->enqueue(stod(s.substr(1, s.length()-1))); + } else { + queue->dequeue(); + } + } + while(!queue->is_empty()) + out << queue->dequeue()->key() << ' '; + out << endl; + break; + } + case 'c': { + Coda<char>* queue = new Coda<char>{}; + in >> n; + string s; + for(int i = 0; i < n; ++i) { + in >> s; + if(s.at(0) == 'i') { + queue->enqueue(s.at(1)); + } else { + queue->dequeue(); + } + } + while(!queue->is_empty()) + out << queue->dequeue()->key() << ' '; + out << endl; + break; + } + case 'i': { + Coda<int>* queue = new Coda<int>{}; + in >> n; + string s; + for(int i = 0; i < n; ++i) { + in >> s; + if(s.at(0) == 'i') { + queue->enqueue(stoi(s.substr(1, s.length()-1))); + } else { + queue->dequeue(); + } + } + while(!queue->is_empty()) + out << queue->dequeue()->key() << ' '; + out << endl; + break; + } + } + } + in.close(); + out.close(); + return 0; +} + diff --git a/Year_1/Programming_2/exercises/doppioni.cc b/Year_1/Programming_2/exercises/doppioni.cc new file mode 100644 index 0000000..fdd3e88 --- /dev/null +++ b/Year_1/Programming_2/exercises/doppioni.cc @@ -0,0 +1,77 @@ +#include<iostream> +#include<fstream> + +using namespace std; + +template<class T> +class node { +public: + node(T key, node* parent, node* right, node* left) : _key{key}, _parent{parent}, _right{right}, _left{left} {} + T& key() { return _key; } + const T& key() const { return _key; } + node<T>*& parent() { return _parent; } + const node<T>*& parent() const { return _parent; } + node<T>*& right() { return _right; } + const node<T>*& right() const { return _right; } + node<T>*& left() { return _left; } + const node<T>*& left() const { return _left; } +private: + T _key; + node<T>* _parent; + node<T>* _right; + node<T>* _left; +}; + +class bst { +public: + bst() : _duplicates{0}, _root{nullptr} {} + bst* add(int val) { + node<int>* iter = _root; + node<int>* prev = nullptr; + while(iter) { + prev = iter; + if(iter->key() == val) { + _duplicates++; + return this; + } + + if(iter->key() > val) + iter = iter->right(); + else + iter = iter->left(); + } + + node<int>* nodus = new node<int>{val, prev, nullptr, nullptr}; + if(!prev) + _root = nodus; + else if(prev->key() > val) + prev->right() = nodus; + else + prev->left() = nodus; + + return this; + } + const int& duplicates() const { return _duplicates; } +private: + int _duplicates; + node<int>* _root; +}; + +int main() { + ifstream in("input.txt"); + ofstream out("output.txt"); + for(int ts = 0; ts < 100; ++ts) { + bst* b = new bst{}; + int n; + in >> n; + int e; + for(int i = 0; i < n; ++i) { + in >> e; + b->add(e); + } + out << b->duplicates() << endl; + } + in.close(); + out.close(); + return 0; +} diff --git a/Year_1/Programming_2/exercises/estremi-uguali.cc b/Year_1/Programming_2/exercises/estremi-uguali.cc new file mode 100644 index 0000000..63ac019 --- /dev/null +++ b/Year_1/Programming_2/exercises/estremi-uguali.cc @@ -0,0 +1,32 @@ +#include<iostream> +#include<string> +#include<fstream> + +using namespace std; + +int result(string s) { + if(s.at(0) == s.at(s.length()-1)) + return 1; + + return 0; +} + +int main() { + ifstream in("input.txt"); + ofstream out("output.txt"); + + for(int ts = 0; ts < 100; ++ts) { + int _; + string s; + int size{}; + for(int i = 0; i < 3; ++i) { + in >> _ >> s; + size += result(s); + } + out << size << '\n'; + } + + in.close(); + out.close(); + return 0; +} diff --git a/Year_1/Programming_2/exercises/even-length.cc b/Year_1/Programming_2/exercises/even-length.cc new file mode 100644 index 0000000..2d3d6a4 --- /dev/null +++ b/Year_1/Programming_2/exercises/even-length.cc @@ -0,0 +1,27 @@ +#include<iostream> +#include<string> +#include<fstream> + +using namespace std; + +string result(string s) { + if(s.length() % 2 == 0) + return s; + + return s.substr(0, s.length()-1); +} + +int main() { + ifstream in("input.txt"); + ofstream out("output.txt"); + + for(int ts = 0; ts < 100; ++ts) { + string s; + in >> s; + out << result(s) << '\n'; + } + + in.close(); + out.close(); + return 0; +} diff --git a/Year_1/Programming_2/exercises/exam_08_10_14.cc b/Year_1/Programming_2/exercises/exam_08_10_14.cc new file mode 100644 index 0000000..c9c33be --- /dev/null +++ b/Year_1/Programming_2/exercises/exam_08_10_14.cc @@ -0,0 +1,202 @@ +#include<iostream> + +using namespace std; + +template<class H> class MultiBST { + virtual MultiBST<H>* ins(H x) = 0; + virtual int multiplicity(H x) = 0; + virtual void inorder() = 0; +}; + +template<class H> +class node { +public: + node(H val) : _key{val}, _parent{nullptr}, _left{nullptr}, _right{nullptr}, _rk{1} {} + H& key() { return _key; } + const H& key() const { return _key; } + node<H>*& parent() { return _parent; } + const node<H>*& parent() const { return _parent; } + node<H>*& left() { return _left; } + const node<H>*& left() const { return _left; } + node<H>*& right() { return _right; } + const node<H>*& right() const { return _right; } + int& rk() { return _rk; } + const int& rk() const { return _rk; } +private: + H _key; + node<H>* _parent; + node<H>* _left; + node<H>* _right; + int _rk; +}; + +template<class H> +class MyMultiBST : public MultiBST<H> { +public: + MyMultiBST() : _root{nullptr} {} + node<H>*& root() { return _root; } + const node<H>*& root() const { return _root; } + int multiplicity(H x) { + auto elem = _search(x); + if(elem) + return elem->rk(); + return 0; + } + MyMultiBST<H>* ins(H x) { + auto iter = _search(x); + if(iter) { + iter->rk() = iter->rk()+1; + } else { + iter = _root; + node<H>* y{nullptr}; + + while(iter) { + y = iter; + if(iter->key() > x) + iter = iter->left(); + else + iter = iter->right(); + } + + node<H>* nodus = new node<H>{x}; + nodus->parent() = y; + if(!y) { + _root = nodus; + } else if(y->key() > x) { + y->left() = nodus; + } else { + y->right() = nodus; + } + } + + return this; + } + void inorder() { + _inorder(_root); + } + MyMultiBST<H>* del(H x) { + node<H>* y; + node<H>* z = _search(x); + + if(!z) return this; + + if(z->rk() > 1) { + z->rk() = z->rk()-1; + } else { + if(!z->left()) { + _transplant(z, z->right()); + } else if(!z->right()) { + _transplant(z, z->left()); + } else { + y = _min(z->right()); + if(y->parent() != z) { + _transplant(y, y->right()); + y->right() = z->right(); + y->right()->parent() = y; + } + _transplant(z, y); + y->left() = z->left(); + y->left()->parent() = y; + delete z; + } + } + + return this; + } + node<H>* predecessor(H x) { + auto iter = _search(x); + if(!iter) return nullptr; + if(iter->left()) + return _max(iter->left()); + + auto y = iter->parent(); + while(y && iter == y->left()) { + iter = y; + y = y->parent(); + } + + return y; + } + int rank(H x) { + auto iter = predecessor(x); + int sum{1}; + while(iter) { + sum+=iter->rk(); + iter = predecessor(iter->key()); + } + return sum; + } +private: + void _transplant(node<H>* u, node<H>* v) { + if(!u->parent()) _root = v; + else if(u == u->parent()->left()) + u->parent()->left() = v; + else + u->parent()->right() = v; + + if(v) + v->parent() = u->parent(); + } + node<H>* _max(node<H>* x) { + if(!x) return nullptr; + + auto iter = x; + while(iter->right()) { + iter = iter->right(); + } + + return iter; + } + node<H>* _min(node<H>* x) { + if(!x) return nullptr; + + auto iter = x; + while(iter->left()) { + iter = iter->left(); + } + + return iter; + } + void _inorder(node<H>* p) { + if(p) { + _inorder(p->left()); + for(int i = 0; i < p->rk(); ++i) { + cout << p->key() << ' '; + } + _inorder(p->right()); + } + } + node<H>* _search(H val) { + auto iter = _root; + while(iter && iter->key() != val) { + if(iter->key() > val) + iter = iter->left(); + else + iter = iter->right(); + } + + return iter; + } + node<H>* _root; +}; + +int main() { + MyMultiBST<int>* t = new MyMultiBST<int>{}; + + for(auto const& i : {10, 7, 7, 23, 30, 4, 1, 5, 9, 5, 1, 7, 1, 9}) + t->ins(i); + + t->inorder(); + cout << '\n'; + for(auto const& i : {5, 7, 17}) + cout << i << ": " << t->multiplicity(i) << endl; + + for(auto const& i : {7, 4, 23, 7, 7}) + t->del(i); + t->inorder(); + cout << '\n'; + for(auto const& i: {5, 9, 30}) + cout << t->rank(i) << ' '; + delete t; + return 0; +} diff --git a/Year_1/Programming_2/exercises/exam_20_07_20/ex1.cpp b/Year_1/Programming_2/exercises/exam_20_07_20/ex1.cpp new file mode 100644 index 0000000..4f08a74 --- /dev/null +++ b/Year_1/Programming_2/exercises/exam_20_07_20/ex1.cpp @@ -0,0 +1,39 @@ +#include<iostream> +#include<sstream> +#include<fstream> +#include<vector> + +using namespace std; +int insertionsort(vector<int>& a, int n) { + int c = 0; + for(int i = 1; i < n; ++i) { + int j = i-1; + int key = a[i]; + while(j > -1 && a[j] > key) { + swap(a[j+1], a[j]); + --j; + c++; + } + a[j+1] = key; + } + return c; +} +int main() { + ifstream in("input.txt"); + ofstream out("output.txt"); + + for(int ts = 0; ts < 100; ++ts) { + int N; + in >> N; + int a, b; + vector<int> v; + for(int i = 0; i < N; ++i) { + in >> a >> b; + v.push_back(a+b); + } + out << insertionsort(v, v.size()) << endl; + } + in.close(); + out.close(); + return 0; +} diff --git a/Year_1/Programming_2/exercises/exam_20_07_20/ex2.cpp b/Year_1/Programming_2/exercises/exam_20_07_20/ex2.cpp new file mode 100644 index 0000000..aed25e4 --- /dev/null +++ b/Year_1/Programming_2/exercises/exam_20_07_20/ex2.cpp @@ -0,0 +1,63 @@ +#include<iostream> +#include<sstream> +#include<fstream> +#include<queue> + +using namespace std; +using pi = tuple<int, int, vector<int>>; + +class comp { +public: + bool operator()(const pi& lhs, const pi& rhs) const { + auto xl = get<0>(lhs); + auto yl = get<0>(rhs); + + auto il = get<1>(lhs); + auto jl = get<1>(rhs); + if(xl == yl) + return il > jl; + return xl > yl; + } +}; + +int main() { + ifstream in("input.txt"); + ofstream out("output.txt"); + + for(int ts = 0; ts < 100; ++ts) { + int R, C; + in >> R >> C; + vector<vector<int>> v; + priority_queue<pi, vector<pi>, comp> pq; + int k; + for(int i = 0; i < R; ++i) { + v.push_back(vector<int>{}); + for(int j = 0; j < C; ++j) { + in >> k; + v[i].push_back(k); + } + } + + int index = 0; + for(auto const& i : v) { + int s = 0; + pi qq; + for(auto const& j : i) + s += j; + get<0>(qq) = s; + get<1>(qq) = index++; + get<2>(qq) = i; + pq.push(qq); + } + while(!pq.empty()) { + auto q = pq.top(); + pq.pop(); + for(auto const& i : get<2>(q)) + out << i << ' '; + } + out << endl; + } + in.close(); + out.close(); + return 0; +} diff --git a/Year_1/Programming_2/exercises/exam_20_07_20/ex3.cpp b/Year_1/Programming_2/exercises/exam_20_07_20/ex3.cpp new file mode 100644 index 0000000..71f9c65 --- /dev/null +++ b/Year_1/Programming_2/exercises/exam_20_07_20/ex3.cpp @@ -0,0 +1,284 @@ +#include<iostream> +#include<sstream> +#include<fstream> + +using namespace std; + +template<class T> +struct node { + T key; + node<T>* prev; + node<T>* right; + node<T>* left; +}; + +template<class T> +class bst { +public: + bst() : root{nullptr} , _val{0}{} + + ~bst() { + // TODO + } + + bst<T>* insert(initializer_list<T>&& list) { + for(auto const& i : list) + insert(i); + + return this; + } + + bst<T>* insert(T k) { + node<T>* nodus = new node<T>{k, nullptr, nullptr, nullptr}; + node<T>* iter = root; + node<T>* prev = nullptr; + + while(iter) { + prev = iter; + iter = (k < iter->key) ? iter->left : iter->right; + } + + nodus->prev = prev; + if(!prev) + root = nodus; + else if(k < prev->key) + prev->left = nodus; + else + prev->right = nodus; + + return this; + } + + bst<T>* remove(initializer_list<T>&& list) { + for(auto const& i : list) + remove(i); + + return this; + } + + bst<T>* remove(T k) { + node<T>* nodus = search(k); + if(!nodus) return this; + + if(!nodus->left) { + _transplant(nodus, nodus->right); + } else if(!nodus->right) { + _transplant(nodus, nodus->left); + } else { + node<T>* iter = _min(nodus->right); + if(iter->prev != nodus) { + _transplant(iter, iter->right); + iter->right = nodus->right; + iter->right->prev = iter; + } + _transplant(nodus, iter); + iter->left = nodus->left; + iter->left->prev = iter; + } + + delete nodus; + return this; + } + + node<T>* min() { + return _min(root); + } + + node<T>* min(node<T>* nodus) { + return _min(nodus); + } + + node<T>* max() { + return _max(root); + } + + node<T>* max(node<T>* nodus) { + return _max(nodus); + } + + node<T>* search(T k) { + node<T>* iter = root; + while(iter && iter->key != k) + iter = (iter->key > k) ? iter->left : iter->right; + + return iter; + } + + node<T>* successor(T k) { + node<T>* nodus = search(k); + if(!nodus) return nullptr; + + if(nodus->right) + return min(nodus->right); + + node<T>* prev = nodus->prev; + while(prev && nodus == prev->right) { + nodus = prev; + prev = prev->prev; + } + + return prev; + + } + node<T>* predecessor(T k) { + node<T>* nodus = search(k); + if(!nodus) return nullptr; + + if(nodus->left) + return max(nodus->left); + + node<T>* prev = nodus->prev; + while(prev && nodus == prev->left) { + nodus = prev; + prev = prev->prev; + } + + return prev; + } + + friend ostream& operator<<(ostream& os, bst<T>* tree) { + tree->_inorder(os, tree->root); + return os; + } + T sol(T k) { + return _max(search(k))->key; + } +private: + int _val; + void _transplant(node<T>* u, node<T>* v) { + if(!u->prev) { + root = v; + } else if(u == u->prev->left) { + u->prev->left = v; + } else { + u->prev->right = v; + } + + if(v) + v->prev = u->prev; + } + + node<T>* _min(node<T>* root) { + node<T>* iter = root; + while(iter && iter->left) + iter = iter->left; + + return iter; + } + + node<T>* _max(node<T>* root) { + node<T>* iter = root; + while(iter && iter->right) + iter = iter->right; + + return iter; + } + + void _inorder(ostream& os, node<T>* root) { + if(root) { + if(root->right && root->left) { + _val++; + } + _inorder(os, root->left); + os << root->key << ' '; + _inorder(os, root->right); + } + } + + void _preorder(ostream& os, node<T>* root) { + if(root) { + os << root->key << ' '; + _inorder(os, root->left); + _inorder(os, root->right); + } + } + + void _postorder(ostream& os, node<T>* root) { + if(root) { + _inorder(os, root->left); + _inorder(os, root->right); + os << root->key << ' '; + } + } + node<T>* root; +}; + +int main() { + ifstream in("input.txt"); + ofstream out("output.txt"); + + for(int ts = 0; ts < 100; ++ts) { + string t, comm; + in >> t; + int n; + switch(t.at(0)) { + case 'd': + { + bst<double>* b = new bst<double>{}; + in >> n; + double k; + for(int i = 0; i < n; ++i) { + in >> comm; + stringstream tcomm(comm); + int ex= 0; + while(getline(tcomm, comm, ':')) { + if(ex == 0) { + if(comm == "ins") + ex = 1; + else + ex = 2; + } else { + if(ex == 1) + b->insert(stod(comm)); + else + b->remove(stod(comm)); + ex = 0; + } + } + } + in >> k; + cout << b << endl; + out << b->sol(k) << endl; + + delete b; + break; + } + case 'i': + { + bst<int>* b = new bst<int>{}; + in >> n; + int k; + for(int i = 0; i < n; ++i) { + in >> comm; + stringstream tcomm(comm); + int ex= 0; + while(getline(tcomm, comm, ':')) { + if(ex == 0) { + if(comm == "ins") + ex = 1; + else + ex = 2; + } else { + if(ex == 1) + b->insert(stoi(comm)); + else + b->remove(stoi(comm)); + ex = 0; + } + } + } + in >> k; + cout << b << endl; + out << b->sol(k) << endl; + + delete b; + break; + } + } + } + + in.close(); + out.close(); + return 0; +} + diff --git a/Year_1/Programming_2/exercises/exam_20_07_20/ex4.cpp b/Year_1/Programming_2/exercises/exam_20_07_20/ex4.cpp new file mode 100644 index 0000000..e234363 --- /dev/null +++ b/Year_1/Programming_2/exercises/exam_20_07_20/ex4.cpp @@ -0,0 +1,293 @@ +#include<iostream> +#include<sstream> +#include<fstream> + +using namespace std; + +template<class T> +struct node { + T key; + node<T>* prev; + node<T>* right; + node<T>* left; +}; + +template<class T> +class bst { +public: + bst() : root{nullptr} , _val{0}{} + + ~bst() { + // TODO + } + + bst<T>* insert(initializer_list<T>&& list) { + for(auto const& i : list) + insert(i); + + return this; + } + + bst<T>* insert(T k) { + node<T>* nodus = new node<T>{k, nullptr, nullptr, nullptr}; + node<T>* iter = root; + node<T>* prev = nullptr; + + while(iter) { + prev = iter; + iter = (k < iter->key) ? iter->left : iter->right; + } + + nodus->prev = prev; + if(!prev) + root = nodus; + else if(k < prev->key) + prev->left = nodus; + else + prev->right = nodus; + + return this; + } + + bst<T>* remove(initializer_list<T>&& list) { + for(auto const& i : list) + remove(i); + + return this; + } + + bst<T>* remove(T k) { + node<T>* nodus = search(k); + if(!nodus) return this; + + if(!nodus->left) { + _transplant(nodus, nodus->right); + } else if(!nodus->right) { + _transplant(nodus, nodus->left); + } else { + node<T>* iter = _min(nodus->right); + if(iter->prev != nodus) { + _transplant(iter, iter->right); + iter->right = nodus->right; + iter->right->prev = iter; + } + _transplant(nodus, iter); + iter->left = nodus->left; + iter->left->prev = iter; + } + + delete nodus; + return this; + } + + node<T>* min() { + return _min(root); + } + + node<T>* min(node<T>* nodus) { + return _min(nodus); + } + + node<T>* max() { + return _max(root); + } + + node<T>* max(node<T>* nodus) { + return _max(nodus); + } + + node<T>* search(T k) { + node<T>* iter = root; + while(iter && iter->key != k) + iter = (iter->key > k) ? iter->left : iter->right; + + return iter; + } + + node<T>* successor(T k) { + node<T>* nodus = search(k); + if(!nodus) return nullptr; + + if(nodus->right) + return min(nodus->right); + + node<T>* prev = nodus->prev; + while(prev && nodus == prev->right) { + nodus = prev; + prev = prev->prev; + } + + return prev; + + } + node<T>* predecessor(T k) { + node<T>* nodus = search(k); + if(!nodus) return nullptr; + + if(nodus->left) + return max(nodus->left); + + node<T>* prev = nodus->prev; + while(prev && nodus == prev->left) { + nodus = prev; + prev = prev->prev; + } + + return prev; + } + + friend ostream& operator<<(ostream& os, bst<T>* tree) { + tree->_inorder(os, tree->root); + return os; + } + T sol(T k) { + auto x = search(k); + auto m = _max(x)->key; + auto mnn = _min(x); + T mn; + if(mnn->right) + mn = _min(mnn->right)->key; + else + mn = mnn->key; + cout << m << ' ' << mn << endl; + return m - mn; + } +private: + int _val; + void _transplant(node<T>* u, node<T>* v) { + if(!u->prev) { + root = v; + } else if(u == u->prev->left) { + u->prev->left = v; + } else { + u->prev->right = v; + } + + if(v) + v->prev = u->prev; + } + + node<T>* _min(node<T>* root) { + node<T>* iter = root; + while(iter && iter->left) + iter = iter->left; + + return iter; + } + + node<T>* _max(node<T>* root) { + node<T>* iter = root; + while(iter && iter->right) + iter = iter->right; + + return iter; + } + + void _inorder(ostream& os, node<T>* root) { + if(root) { + if(root->right && root->left) { + _val++; + } + _inorder(os, root->left); + os << root->key << ' '; + _inorder(os, root->right); + } + } + + void _preorder(ostream& os, node<T>* root) { + if(root) { + os << root->key << ' '; + _inorder(os, root->left); + _inorder(os, root->right); + } + } + + void _postorder(ostream& os, node<T>* root) { + if(root) { + _inorder(os, root->left); + _inorder(os, root->right); + os << root->key << ' '; + } + } + node<T>* root; +}; + +int main() { + ifstream in("input.txt"); + ofstream out("output.txt"); + + for(int ts = 0; ts < 100; ++ts) { + string t, comm; + in >> t; + int n; + switch(t.at(0)) { + case 'd': + { + bst<double>* b = new bst<double>{}; + in >> n; + double k; + for(int i = 0; i < n; ++i) { + in >> comm; + stringstream tcomm(comm); + int ex= 0; + while(getline(tcomm, comm, ':')) { + if(ex == 0) { + if(comm == "ins") + ex = 1; + else + ex = 2; + } else { + if(ex == 1) + b->insert(stod(comm)); + else + b->remove(stod(comm)); + ex = 0; + } + } + } + in >> k; + cout << b << endl; + out << b->sol(k) << endl; + + delete b; + break; + } + case 'i': + { + bst<int>* b = new bst<int>{}; + in >> n; + int k; + for(int i = 0; i < n; ++i) { + in >> comm; + stringstream tcomm(comm); + int ex= 0; + while(getline(tcomm, comm, ':')) { + if(ex == 0) { + if(comm == "ins") + ex = 1; + else + ex = 2; + } else { + if(ex == 1) + b->insert(stoi(comm)); + else + b->remove(stoi(comm)); + ex = 0; + } + } + } + in >> k; + cout << b << endl; + out << b->sol(k) << endl; + + delete b; + break; + } + } + } + + in.close(); + out.close(); + return 0; +} + diff --git a/Year_1/Programming_2/exercises/exam_20_07_20/ex5.cpp b/Year_1/Programming_2/exercises/exam_20_07_20/ex5.cpp new file mode 100644 index 0000000..dd8fc98 --- /dev/null +++ b/Year_1/Programming_2/exercises/exam_20_07_20/ex5.cpp @@ -0,0 +1,285 @@ +#include<iostream> +#include<vector> +#include<algorithm> +#include<queue> +#include<stack> +#include<fstream> +#define INF 99999999 +#define W -1 +#define G 0 +#define B 1 + +using namespace std; + +template<class H> +class graph { +public: + graph(int len) : _len{len}, _nodes{0}, _edges{0} { + _k = new H*[len]; + _adj = new vector<int>[len]; + _colors = new int[len]; + _d = new int[len]; + _f = new int[len]; + _p = new int[len]; + + for(int i = 0; i < len; ++i) { + _k[i] = nullptr; + } + } + ~graph() { + delete[] _k; + delete[] _adj; + } + + graph<H>* add_node(H x) { + if(_index(x) > -1) return this; + if(_nodes == _len) return this; + _k[_nodes++] = new H(x); + + return this; + } + graph<H>* add_edge(H u, H v) { + int i = _index(u); + int j = _index(v); + if(i < 0 || j < 0) return this; + + if(find(_adj[i].begin(), _adj[i].end(), j) == _adj[i].end()) { + _adj[i].push_back(j); + } + return this; + } + void print() { + for(int i = 0; i < _nodes; ++i) { + cout << "(" << *_k[i] << ", " << i << "): "; + for(auto const& j : _adj[i]) { + cout << "(" << *_k[j] << ", " << j << ") "; + } + cout << endl; + } + } + void dfsvisit(int u, bool visited[]) { + visited[u] = true; + cout << "(" << *_k[u] << ", " << u << ") "; + for(auto const& i : _adj[u]) { + if(!visited[i]) + dfsvisit(i, visited); + } + } + int dfsvisit(int u) { + int cycle = 0; + _colors[u] = G; + _d[u] = _time++; + + for(auto const& j : _adj[u]) { + if(_colors[j] == W) + cycle |= dfsvisit(j); + } + + _colors[u] = B; + _stack.push(u); + _f[u] = _time++; + return cycle; + } + int dfs() { + int cycle = 0; + for(int i = 0; i < _nodes; ++i) { + _colors[i] = W; + } + _time = 0; + for(int i = 0; i < _nodes; ++i) { + if(_colors[i] == W) + cycle |= dfsvisit(i); + else if(_colors[i] == G) + cycle = 1; + } + for(int i = 0; i < _nodes; ++i) { + cout << "(" << *_k[i] << ", " << i << "): [" << _d[i] << "," << _f[i] << "]" << endl; + } + return cycle; + } + + void top_sort() { + int cycle = dfs(); + if(cycle) { + cout << "cyclic graph!" << endl; + return; + } + int* s = new int[_nodes]; + for(int i = 0; i < _nodes; ++i) s[i] = i; + _sort(s, _nodes, _f); + for(int i = 0; i < _nodes; ++i) { + cout << "(" << s[i] << ", " << _f[s[i]] << ") "; + } + + } + + void bfs(H v) { + int s = _index(v); + if(s < 0) return; + + for(int i = 0; i < _nodes; ++i) { + _colors[i] = W; + _d[i] = INF; + _p[i] = -1; + } + _colors[s] = G; + _d[s] = 0; + queue<int> q; + q.push(s); + while(!q.empty()) { + int u = q.front(); + q.pop(); + for(auto const& j : _adj[u]) { + if(_colors[j] == W) { + _colors[j] = G; + _d[j] = _d[u]+1; + _p[j] = u; + q.push(j); + } + } + _colors[u] = B; + } + for(int i = 0; i < _nodes; ++i) { + cout << "(" << *_k[i] << ", " << i << "): [" << _d[i] << "]" << endl; + } + } + int ssc() { + dfs(); + cout << endl << endl; + bool* visited = new bool[_nodes]; + for(int i = 0; i < _nodes; ++i) + visited[i] = false; + int count = 0; + while(!_stack.empty()) { + int v = _stack.top(); + _stack.pop(); + if(!visited[v]) { + dfsvisit(v, visited); + count++; + cout << endl; + } + } + delete[] visited; + return count; + } +private: + graph<H>* _transpose() { + graph<H>* g = new graph<H>{_len}; + for(int i = 0; i < _nodes; ++i) { + g->add_node(*_k[i]); + } + + for(int i = 0; i < _nodes; ++i) { + for(auto const& j : _adj[i]) { + g->add_edge(j, i); + } + } + + return g; + } + void _sort(int* d, int n, int* s) { + for(int i = -1; i < n; ++i) { + int j = i-1; + while(j > -1 && s[d[j+1]]>s[d[j]]) { + swap(d[s[j+1]], d[s[j]]); + --j; + } + } + } + int _index(H x) { + for(int i = 0; i < _nodes; ++i) + if(*_k[i] == x) return i; + + return -1; + } + stack<int> _stack; + H** _k; + vector<int>* _adj; + int _len, _nodes, _edges; + int* _colors; + int _time; + int* _d; + int* _f; + int* _p; +}; + +int main() { + ifstream in("input.txt"); + ofstream out("output.txt"); + + for(int ts = 0; ts < 100; ++ts) { + int n, e; + in >> n>>e; + string t; + in >> t; + char _t; + switch(t.at(0)){ + case 'd':{ + graph<double>* g = new graph<double>{n}; + double x, y; + for(int i = 0; i < n; ++i) { + in >> x; + g->add_node(x); + } + for(int i = 0; i < e; ++i) { + in >>_t; + in >> x >> y; + in >> _t; + g->add_edge(x, y); + g->add_edge(y, x); + } + g->print(); + cout << endl << endl; + out << g->ssc()<<endl; + delete g; + break; + } + case 'i':{ + + graph<int>* g = new graph<int>{n}; + int x, y; + for(int i = 0; i < n; ++i) { + in >> x; + g->add_node(x); + } + for(int i = 0; i < e; ++i) { + in >>_t; + in >> x >> y; + in >> _t; + g->add_edge(x, y); + g->add_edge(y, x); + } + g->print(); + cout << endl << endl; + out << g->ssc()<<endl; + delete g; + break; + } + case 'c': { + + graph<char>* g = new graph<char>{n}; + char x, y; + for(int i = 0; i < n; ++i) { + in >> x; + g->add_node(x); + } + for(int i = 0; i < e; ++i) { + in >>_t; + in >> x >> y; + in >> _t; + g->add_edge(x, y); + g->add_edge(y, x); + } + g->print(); + cout << endl << endl; + out << g->ssc()<<endl; + delete g; + break; + } + } + } + in.close(); + out.close(); + return 0; +} + diff --git a/Year_1/Programming_2/exercises/inizia-con.cc b/Year_1/Programming_2/exercises/inizia-con.cc new file mode 100644 index 0000000..97f0c39 --- /dev/null +++ b/Year_1/Programming_2/exercises/inizia-con.cc @@ -0,0 +1,33 @@ +#include<iostream> +#include<string> +#include<fstream> + +using namespace std; + +string result(string s, char c) { + if(s.at(0) == c) + return s + ' '; + + return ""; +} + +int main() { + ifstream in("input.txt"); + ofstream out("output.txt"); + + for(int ts = 0; ts < 100; ++ts) { + int _; + string s; + char c; + in >> c; + for(int i = 0; i < 3; ++i) { + in >> _ >> s; + out << result(s, c); + } + out << '\n'; + } + + in.close(); + out.close(); + return 0; +} diff --git a/Year_1/Programming_2/exercises/inserimento-coda.cc b/Year_1/Programming_2/exercises/inserimento-coda.cc new file mode 100644 index 0000000..6775ca2 --- /dev/null +++ b/Year_1/Programming_2/exercises/inserimento-coda.cc @@ -0,0 +1,119 @@ +#include<iostream> +#include<fstream> + +using namespace std; + +template<class T> +class node { +public: + node(T key, node<T>* next) : _key{key}, _next{next} {} + node(T key) : _key{key}, _next{nullptr} {} + const T& key() const { return _key; } + T& key() { return _key; } + const node<T>*& next() const { return _next; } + node<T>*& next() { return _next; } +private: + T _key; + node<T>* _next; +}; + +template<class T> +class Coda { +public: + Coda() : _head{nullptr}, _tail{nullptr} {} + ~Coda() { + + } + Coda<T>* enqueue(T val) { + if(!_head) { + _head = new node<T>{val, nullptr}; + _tail = _head; + } else { + _tail->next() = new node<T>{val, nullptr}; + _tail = _tail->next(); + } + + return this; + } + node<T>* pop() { + if(!_head) return nullptr; + node<T>* elem = _head; + delete _head; + _head = elem->next(); + + return elem; + } + + bool is_empty() { return _head == nullptr; } +private: + node<T>* _head; + node<T>* _tail; +}; + +int main() { + ifstream in("input.txt"); + ofstream out("output.txt"); + + for(int ts = 0; ts < 100; ++ts) { + string t; + int n; + in >> t; + switch(t.at(0)) { + case 'b': { + Coda<bool>* queue = new Coda<bool>{}; + in >> n; + bool e; + for(int i = 0; i < n; ++i) { + in >> e; + queue->enqueue(e); + } + while(!queue->is_empty()) + out << queue->pop()->key() << ' '; + out << endl; + break; + } + case 'd': { + Coda<double>* queue = new Coda<double>{}; + in >> n; + double e; + for(int i = 0; i < n; ++i) { + in >> e; + queue->enqueue(e); + } + while(!queue->is_empty()) + out << queue->pop()->key() << ' '; + out << endl; + break; + } + case 'c': { + Coda<char>* queue = new Coda<char>{}; + in >> n; + char e; + for(int i = 0; i < n; ++i) { + in >> e; + queue->enqueue(e); + } + while(!queue->is_empty()) + out << queue->pop()->key() << ' '; + out << endl; + break; + } + case 'i': { + Coda<int>* queue = new Coda<int>{}; + in >> n; + int e; + for(int i = 0; i < n; ++i) { + in >> e; + queue->enqueue(e); + } + while(!queue->is_empty()) + out << queue->pop()->key() << ' '; + out << endl; + break; + } + } + } + in.close(); + out.close(); + return 0; +} diff --git a/Year_1/Programming_2/exercises/inserimento-pila.cc b/Year_1/Programming_2/exercises/inserimento-pila.cc new file mode 100644 index 0000000..0dbe99b --- /dev/null +++ b/Year_1/Programming_2/exercises/inserimento-pila.cc @@ -0,0 +1,116 @@ +#include<iostream> +#include<fstream> + +using namespace std; + +template<class T> +class node { +public: + node(T key, node<T>* next) : _key{key}, _next{next} {} + node(T key) : _key{key}, _next{nullptr} {} + const T& key() const { return _key; } + T& key() { return _key; } + const node<T>*& next() const { return _next; } + node<T>*& next() { return _next; } +private: + T _key; + node<T>* _next; +}; + +template<class T> +class Pila { +public: + Pila() : _head{nullptr}{} + ~Pila() { + + } + Pila<T>* push(T val) { + if(!_head) { + _head = new node<T>{val, nullptr}; + } else { + _head = new node<T>{val, _head}; + } + + return this; + } + node<T>* pop() { + if(!_head) return nullptr; + node<T>* elem = _head; + delete _head; + _head = elem->next(); + + return elem; + } + + bool is_empty() { return _head == nullptr; } +private: + node<T>* _head; +}; + +int main() { + ifstream in("input.txt"); + ofstream out("output.txt"); + + for(int ts = 0; ts < 100; ++ts) { + string t; + int n; + in >> t; + switch(t.at(0)) { + case 'b': { + Pila<bool>* stack = new Pila<bool>{}; + in >> n; + bool e; + for(int i = 0; i < n; ++i) { + in >> e; + stack->push(e); + } + while(!stack->is_empty()) + out << stack->pop()->key() << ' '; + out << endl; + break; + } + case 'd': { + Pila<double>* stack = new Pila<double>{}; + in >> n; + double e; + for(int i = 0; i < n; ++i) { + in >> e; + stack->push(e); + } + while(!stack->is_empty()) + out << stack->pop()->key() << ' '; + out << endl; + break; + } + case 'c': { + Pila<char>* stack = new Pila<char>{}; + in >> n; + char e; + for(int i = 0; i < n; ++i) { + in >> e; + stack->push(e); + } + while(!stack->is_empty()) + out << stack->pop()->key() << ' '; + out << endl; + break; + } + case 'i': { + Pila<int>* stack = new Pila<int>{}; + in >> n; + int e; + for(int i = 0; i < n; ++i) { + in >> e; + stack->push(e); + } + while(!stack->is_empty()) + out << stack->pop()->key() << ' '; + out << endl; + break; + } + } + } + in.close(); + out.close(); + return 0; +} diff --git a/Year_1/Programming_2/exercises/matrice-adj.cc b/Year_1/Programming_2/exercises/matrice-adj.cc new file mode 100644 index 0000000..7830f97 --- /dev/null +++ b/Year_1/Programming_2/exercises/matrice-adj.cc @@ -0,0 +1,151 @@ +#include<iostream> +#include<vector> +#include<fstream> +#include<sstream> + +using namespace std; + +template<class H> +class matrix_graph { +public: + ~matrix_graph() { + delete[] _m; + delete[] _k; + } + matrix_graph(int len) : _len{len}, _nodes{0}, _edges{0} { + _m = new int*[len]; + _k = new H*[len]; + for(int i = 0; i < len; ++i) { + _m[i] = new int[len]; + _k[i] = nullptr; + for(int j = 0; j < len; ++j) + _m[i][j] = 0; + } + } + + matrix_graph<H>* add_node(H k) { + if(_len == _nodes) return this; // no more space for new nodes + if(_index(k) > -1) return this; // nodes already exists + + _k[_nodes++] = new H(k); + + return this; + } + + matrix_graph<H>* add_edge(H x, H y) { + int i = _index(x); + int j = _index(y); + if(i < 0 || j < 0) return this; + if(!_m[i][j]) { + _m[i][j] = 1; + _edges++; + } + return this; + } + vector<vector<H>> print() { + vector<vector<H>> v; + for(int i = 0; i < _len; ++i) { + v.push_back(vector<H>{*_k[i]}); + vector<H> temp; + for(int j = 0; j < _len; ++j) { + if(_m[i][j]) { + temp.push_back(*_k[j]); + } + } + sort(begin(temp), end(temp)); + for(auto const& j : temp) + v[i].push_back(j); + } + + sort(begin(v), end(v)); + return v; + } +private: + int _len, _nodes, _edges; + int** _m; + H** _k; + int _index(H x) { + for(int i = 0; i < _nodes; ++i) + if(*_k[i] == x) return i; + return -1; + } +}; + +template<class H> +string result(vector<vector<H>> v) { + string s{""}; + ostringstream ss; + for(auto const& i : v) { + s += "("; + for(auto const& j : i) { + ss << j; + s+= ss.str(); + s+= ' '; + ss.str(""); ss.clear(); + } + s.pop_back(); + s += ") "; + } + return s; +} + +int main() { + ifstream in("input.txt"); + ofstream out("output.txt"); + for(int ts = 0; ts < 100; ++ts) { + int n, m; + in >> n >> m; + string t; + in >> t; + if(t == "int") { + matrix_graph<int>* g = new matrix_graph<int>(n); + int x,y; + for(int i = 0; i < n; ++i) { + in >> x; + g->add_node(x); + } + char ex; + for(int i = 0; i < m; ++i) { + in >> ex >> x >> y >> ex; + g->add_edge(x, y); + } + auto v = g->print(); + out << result(v) << endl; + delete g; + } else if(t == "double") { + matrix_graph<double>* g = new matrix_graph<double>(n); + double x,y; + for(int i = 0; i < n; ++i) { + in >> x; + g->add_node(x); + } + char ex; + for(int i = 0; i < m; ++i) { + in >> ex >> x >> y >> ex; + g->add_edge(x, y); + } + auto v = g->print(); + out << result(v) << endl; + delete g; + } else { + matrix_graph<char>* g = new matrix_graph<char>(n); + char x,y; + for(int i = 0; i < n; ++i) { + in >> x; + g->add_node(x); + } + char ex; + for(int i = 0; i < m; ++i) { + in >> ex >> x >> y >> ex; + g->add_edge(x, y); + } + + auto v = g->print(); + out << result(v) << endl; + delete g; + } + } + in.close(); + out.close(); + return 0; +} diff --git a/Year_1/Programming_2/exercises/minore.cc b/Year_1/Programming_2/exercises/minore.cc new file mode 100644 index 0000000..677da76 --- /dev/null +++ b/Year_1/Programming_2/exercises/minore.cc @@ -0,0 +1,27 @@ +#include<iostream> +#include<string> +#include<fstream> + +using namespace std; + +int main() { + ifstream in("input.txt"); + ofstream out("output.txt"); + + for(int ts = 0; ts < 100; ++ts) { + string s; + in >> s; + int minor = stoi(s); + for(in >> s; s != "STOP"; in >> s) { + int si = stoi(s); + if(si < minor) + minor = si; + } + + out << minor << '\n'; + } + + in.close(); + out.close(); + return 0; +} diff --git a/Year_1/Programming_2/exercises/pop-stack.cc b/Year_1/Programming_2/exercises/pop-stack.cc new file mode 100644 index 0000000..3739450 --- /dev/null +++ b/Year_1/Programming_2/exercises/pop-stack.cc @@ -0,0 +1,132 @@ +#include<iostream> +#include<fstream> + +using namespace std; + +template<class T> +class node { +public: + node(T key, node<T>* next) : _key{key}, _next{next} {} + node(T key) : _key{key}, _next{nullptr} {} + const T& key() const { return _key; } + T& key() { return _key; } + const node<T>*& next() const { return _next; } + node<T>*& next() { return _next; } +private: + T _key; + node<T>* _next; +}; + +template<class T> +class Pila { +public: + Pila() : _head{nullptr}{} + ~Pila() { + + } + Pila<T>* push(T val) { + if(!_head) { + _head = new node<T>{val, nullptr}; + } else { + _head = new node<T>{val, _head}; + } + + return this; + } + node<T>* pop() { + if(!_head) return nullptr; + node<T>* elem = _head; + delete _head; + _head = elem->next(); + + return elem; + } + + bool is_empty() { return _head == nullptr; } +private: + node<T>* _head; +}; + +int main() { + ifstream in("input.txt"); + ofstream out("output.txt"); + + for(int ts = 0; ts < 100; ++ts) { + string t; + int n; + in >> t; + switch(t.at(0)) { + case 'b': { + Pila<bool>* stack = new Pila<bool>{}; + in >> n; + string s; + for(int i = 0; i < n; ++i) { + in >> s; + if(s.at(0) == 'i') { + stack->push(s.at(1) - '0'); + } else { + stack->pop(); + } + } + while(!stack->is_empty()) + out << stack->pop()->key() << ' '; + out << endl; + break; + } + case 'd': { + Pila<double>* stack = new Pila<double>{}; + in >> n; + string s; + for(int i = 0; i < n; ++i) { + in >> s; + if(s.at(0) == 'i') { + stack->push(stod(s.substr(1, s.length()-1))); + } else { + stack->pop(); + } + } + while(!stack->is_empty()) + out << stack->pop()->key() << ' '; + out << endl; + break; + } + case 'c': { + Pila<char>* stack = new Pila<char>{}; + in >> n; + string s; + for(int i = 0; i < n; ++i) { + in >> s; + if(s.at(0) == 'i') { + stack->push(s.at(1)); + } else { + stack->pop(); + } + } + while(!stack->is_empty()) + out << stack->pop()->key() << ' '; + out << endl; + break; + } + case 'i': { + Pila<int>* stack = new Pila<int>{}; + in >> n; + string s; + for(int i = 0; i < n; ++i) { + in >> s; + if(s.at(0) == 'i') { + stack->push(stoi(s.substr(1, s.length()-1))); + } else { + stack->pop(); + } + } + while(!stack->is_empty()) + out << stack->pop()->key() << ' '; + out << endl; + break; + } + } + } + in.close(); + out.close(); + return 0; +} diff --git a/Year_1/Programming_2/exercises/prima-maiuscola.cc b/Year_1/Programming_2/exercises/prima-maiuscola.cc new file mode 100644 index 0000000..6273219 --- /dev/null +++ b/Year_1/Programming_2/exercises/prima-maiuscola.cc @@ -0,0 +1,30 @@ +#include<iostream> +#include<string> +#include<fstream> + +using namespace std; + +string result(string s) { + s.at(0) = toupper(s.at(0)); + + return s; +} + +int main() { + ifstream in("input.txt"); + ofstream out("output.txt"); + + for(int ts = 0; ts < 100; ++ts) { + int _; + string s; + for(int i = 0; i < 3; ++i) { + in >> _ >> s; + out << result(s) << ' '; + } + out << '\n'; + } + + in.close(); + out.close(); + return 0; +} diff --git a/Year_1/Programming_2/exercises/ripetute.cc b/Year_1/Programming_2/exercises/ripetute.cc new file mode 100644 index 0000000..23d151a --- /dev/null +++ b/Year_1/Programming_2/exercises/ripetute.cc @@ -0,0 +1,20 @@ +#include<iostream> +#include<string> +#include<fstream> + +using namespace std; + +int main() { + ifstream in("input.txt"); + ofstream out("output.txt"); + + for(int ts = 0; ts < 100; ++ts) { + string s; + in >> s; + out << s+s << '\n'; + } + + in.close(); + out.close(); + return 0; +} diff --git a/Year_1/Programming_2/exercises/sol-ripetute.cc b/Year_1/Programming_2/exercises/sol-ripetute.cc new file mode 100644 index 0000000..1518d76 --- /dev/null +++ b/Year_1/Programming_2/exercises/sol-ripetute.cc @@ -0,0 +1,25 @@ +#include<iostream> +#include<string> +#include<fstream> + +using namespace std; + +string result(string s) { + int half = s.length()/2; + return s.substr(0, half); +} + +int main() { + ifstream in("input.txt"); + ofstream out("output.txt"); + + for(int ts = 0; ts < 100; ++ts) { + string s; + in >> s; + out << result(s) << '\n'; + } + + in.close(); + out.close(); + return 0; +} diff --git a/Year_1/Programming_2/exercises/sottosequenza.cc b/Year_1/Programming_2/exercises/sottosequenza.cc new file mode 100644 index 0000000..1d7c481 --- /dev/null +++ b/Year_1/Programming_2/exercises/sottosequenza.cc @@ -0,0 +1,26 @@ +#include<iostream> +#include<fstream> + +using namespace std; + +int main() { + ifstream in("input.txt"); + ofstream out("output.txt"); + + for(int ts = 0; ts < 100; ++ts) { + int n; string s; + in >> n >> s; + string tm; + for(int i = 0; i < n; ++i) { + in >> tm; + if(tm.find(s) != string::npos) + out << tm << ' '; + } + out << '\n'; + } + + in.close(); + out.close(); + + return 0; +} diff --git a/Year_1/Programming_2/exercises/stringa-inversa.cc b/Year_1/Programming_2/exercises/stringa-inversa.cc new file mode 100644 index 0000000..5c37718 --- /dev/null +++ b/Year_1/Programming_2/exercises/stringa-inversa.cc @@ -0,0 +1,26 @@ +#include<iostream> +#include<fstream> + +using namespace std; + +int main() { + ifstream in("input.txt"); + ofstream out("output.txt"); + + for(int ts = 0; ts < 100; ++ts) { + int n; + in >> n; + for(int i = 0; i < 3; ++i) { + string s; + in >> s; + for(int j = s.length()-1; j > -1; --j) { + out << s.at(j); + } + out << ' '; + } + out << endl; + } + + out.close(); + in.close(); +} |