diff options
Diffstat (limited to '1_anno/Programmazione_2/data_structures/queue.cc')
-rw-r--r-- | 1_anno/Programmazione_2/data_structures/queue.cc | 72 |
1 files changed, 0 insertions, 72 deletions
diff --git a/1_anno/Programmazione_2/data_structures/queue.cc b/1_anno/Programmazione_2/data_structures/queue.cc deleted file mode 100644 index 8398459..0000000 --- a/1_anno/Programmazione_2/data_structures/queue.cc +++ /dev/null @@ -1,72 +0,0 @@ -#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; -} |