diff options
Diffstat (limited to 'I_anno/Programmazione_2/exercises/dequeue.cc')
-rw-r--r-- | I_anno/Programmazione_2/exercises/dequeue.cc | 137 |
1 files changed, 0 insertions, 137 deletions
diff --git a/I_anno/Programmazione_2/exercises/dequeue.cc b/I_anno/Programmazione_2/exercises/dequeue.cc deleted file mode 100644 index 4b012c4..0000000 --- a/I_anno/Programmazione_2/exercises/dequeue.cc +++ /dev/null @@ -1,137 +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 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; -} - |