A generic queue class, like the queue in C++stl

Source: Internet
Author: User

Template queue, the implementation of the queued, out team, query size and other functions. Implemented using a template.

#ifndef queue_hpp#define queue_hpp #include <assert.h> #include <stddef.h>template <typename t> class    Queue;template <typename t>class node{friend class queue<t>;    Public:node (T data = 0, Node *next = NULL):d ata_ (data), Next_ (next) {} private:t Data_; Node *next_;};        Template <typename t>class queue{public:typedef node<t> *p_node;        Queue ();        Queue (const queue &other);        Queue &operator = (const queue &other);        ~queue ();        void Clear ();        void Enqueue (T data);        void Dequeue (T &data);        BOOL IsEmpty ();    size_t size ();        Private:p_node Front_;        P_node Rear_; size_t Size_;}; Template <typename t>inline queue<t>::queue (): Front_ (null), Rear_ (null), Size_ (0) {}template <ty Pename t>inline queue<t>::queue (const Queue &other): Front_ (null), Rear_ (null), Size_ (0) {P_nod E p = Other.front_;        while (P! = NULL) {enqueue (P->data_);    p = p->next_;  }}template <typename t>inline queue<t> &queue<t>::operator = (const Queue &other) {if (This! =        &other) {clear ();        P_node p = other.front_;            while (P! = NULL) {enqueue (P->data_);        p = p->next_; }} return *this;} Template <typename t>inline Queue<t>::~queue () {clear ();}    Template <typename t>inline void Queue<t>::clear () {P_node p = front_, q = NULL;        while (P! = NULL) {q = p;        Delete p;    p = q->next_; } size_= 0;}     Template <typename t>inline void Queue<t>::enqueue (T data) {P_node NewNode = new node<t> (data, NULL);    if (IsEmpty ()) {Front_ = Rear_ = NewNode;        } else{rear_->next_ = NewNode;    Rear_ = rear_->next_; } size_++;} Template <typename t>inline void queue<t>::d equeue (T &datA) {assert (!isempty ());    P_node p = front_;    Front_ = front_->next_;    data = p->data_;    Delete p; size_--;} Template <typename t>inline bool Queue<t>::isempty () {return front_ = = NULL;} Template <typename t>inline size_t queue<t>::size () {return size_;} #endif/*queue_hpp*/


A generic queue class, like the queue in C++stl

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