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-rw-r--r--I_anno/Programmazione_2/exercises/pop-stack.cc132
1 files changed, 0 insertions, 132 deletions
diff --git a/I_anno/Programmazione_2/exercises/pop-stack.cc b/I_anno/Programmazione_2/exercises/pop-stack.cc
deleted file mode 100644
index 3739450..0000000
--- a/I_anno/Programmazione_2/exercises/pop-stack.cc
+++ /dev/null
@@ -1,132 +0,0 @@
-#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;
-}