From d58e4f1ff807fc7ef321495ed6e231ea798102d5 Mon Sep 17 00:00:00 2001
From: Santo Cariotti <dcariotti24@gmail.com>
Date: Sun, 24 May 2020 15:21:07 +0200
Subject: feat: add exercises

---
 .../Programmazione_2/exercises/estremi-uguali.cc   |  32 ++++++
 I_anno/Programmazione_2/exercises/even-length.cc   |  27 +++++
 I_anno/Programmazione_2/exercises/inizia-con.cc    |  33 ++++++
 .../Programmazione_2/exercises/inserimento-coda.cc | 119 +++++++++++++++++++++
 .../Programmazione_2/exercises/inserimento-pila.cc | 116 ++++++++++++++++++++
 I_anno/Programmazione_2/exercises/minore.cc        |  27 +++++
 .../Programmazione_2/exercises/prima-maiuscola.cc  |  30 ++++++
 I_anno/Programmazione_2/exercises/ripetute.cc      |  20 ++++
 I_anno/Programmazione_2/exercises/sol-ripetute.cc  |  25 +++++
 9 files changed, 429 insertions(+)
 create mode 100644 I_anno/Programmazione_2/exercises/estremi-uguali.cc
 create mode 100644 I_anno/Programmazione_2/exercises/even-length.cc
 create mode 100644 I_anno/Programmazione_2/exercises/inizia-con.cc
 create mode 100644 I_anno/Programmazione_2/exercises/inserimento-coda.cc
 create mode 100644 I_anno/Programmazione_2/exercises/inserimento-pila.cc
 create mode 100644 I_anno/Programmazione_2/exercises/minore.cc
 create mode 100644 I_anno/Programmazione_2/exercises/prima-maiuscola.cc
 create mode 100644 I_anno/Programmazione_2/exercises/ripetute.cc
 create mode 100644 I_anno/Programmazione_2/exercises/sol-ripetute.cc

diff --git a/I_anno/Programmazione_2/exercises/estremi-uguali.cc b/I_anno/Programmazione_2/exercises/estremi-uguali.cc
new file mode 100644
index 0000000..63ac019
--- /dev/null
+++ b/I_anno/Programmazione_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/I_anno/Programmazione_2/exercises/even-length.cc b/I_anno/Programmazione_2/exercises/even-length.cc
new file mode 100644
index 0000000..2d3d6a4
--- /dev/null
+++ b/I_anno/Programmazione_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/I_anno/Programmazione_2/exercises/inizia-con.cc b/I_anno/Programmazione_2/exercises/inizia-con.cc
new file mode 100644
index 0000000..97f0c39
--- /dev/null
+++ b/I_anno/Programmazione_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/I_anno/Programmazione_2/exercises/inserimento-coda.cc b/I_anno/Programmazione_2/exercises/inserimento-coda.cc
new file mode 100644
index 0000000..6775ca2
--- /dev/null
+++ b/I_anno/Programmazione_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/I_anno/Programmazione_2/exercises/inserimento-pila.cc b/I_anno/Programmazione_2/exercises/inserimento-pila.cc
new file mode 100644
index 0000000..0dbe99b
--- /dev/null
+++ b/I_anno/Programmazione_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/I_anno/Programmazione_2/exercises/minore.cc b/I_anno/Programmazione_2/exercises/minore.cc
new file mode 100644
index 0000000..677da76
--- /dev/null
+++ b/I_anno/Programmazione_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/I_anno/Programmazione_2/exercises/prima-maiuscola.cc b/I_anno/Programmazione_2/exercises/prima-maiuscola.cc
new file mode 100644
index 0000000..6273219
--- /dev/null
+++ b/I_anno/Programmazione_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/I_anno/Programmazione_2/exercises/ripetute.cc b/I_anno/Programmazione_2/exercises/ripetute.cc
new file mode 100644
index 0000000..23d151a
--- /dev/null
+++ b/I_anno/Programmazione_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/I_anno/Programmazione_2/exercises/sol-ripetute.cc b/I_anno/Programmazione_2/exercises/sol-ripetute.cc
new file mode 100644
index 0000000..1518d76
--- /dev/null
+++ b/I_anno/Programmazione_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;
+}
-- 
cgit v1.2.3-18-g5258