栈和队列基本操作

顺序栈

const  int  MAX_SIZE=100;
template  <class T>
class  seqStack
{
    public:
        seqStack ( ) ;
        ~seqStack ( );
        void  Push ( T  x );
        T   Pop ( );
        T   GetTop ( );
        bool  Empty ( );
    private:
        T  data[MAX_SIZE];
        int  top;
}
//入栈
template <class T>
void  seqStack<T>::Push ( T  x)
{
     if (top==MAX_SIZE-1)  throw  “溢出”;
     top++;
     data[top]=x;
 } 
//判断是否是空栈
template <class T>
bool  seqStack<T>::Empty ()
{
     if (top==-1)  
         return true;
     return false;
 } 
//取栈顶
template <class T>
T  seqStack<T>::GetTop ( )
{
     if (Empty()) throw  ”空栈” ；
     return data[top];
 } 
//出栈
template  <class  T>
T  seqStack<T>:: Pop ( )
{
     if (top==-1)  throw  “溢出”; 
     x=data[top];
      top--;
     return  x;
}

 

链栈

template <class T>
class LinkStack
{    
   public:
         LinkStack( ) {top=NULL;};
         ~LinkStack( );            
         void Push(T x); 
         T Pop( ); 
         T GetTop( );
         bool Empty( );
   private:
         Node<T> *top; 
}
//入栈
template <class T>
void LinkStack<T>::Push(T x)
{
    s=new Node<T>;
    s->data=x; 
    s->next=top; 
   top=s; 
}
//出栈
template <class T>
T LinkStack<T>::Pop( )
{
    if (top==NULL)
     throw "下溢";
    x=top->data; 
    p=top; 
    top=top->next;   
    delete p;
    return x;
}
//链栈的析构
template <class T>
LinkStack<T>::~LinkStack( )
{
	while (top)
	{
		Node<T> *p;
		p=top->next;
        		delete top;
		top=p;
	}
}

 

循环队列

const int QueueSize=100; 
template <class T>    
class CirQueue{ 
  public:
      CirQueue( )； 
      ~ CirQueue( )；
      void EnQueue(T x); 
     T DeQueue( );             
     T GetQueue( ); 
     bool Empty( ){
      if (rear==front) return true;
       return false;
   }；
  private:
     T data[QueueSize];   
     int front, rear;
};
//入队
template <class T>
 void CirQueue<T>::EnQueue(T x)
 {
   if ((rear+1) % QueueSize ==front) throw "上溢";
   rear=(rear+1) % QueueSize;    
   data[rear]=x;                 
 }
//出队
template <class T>
T CirQueue<T>::DeQueue( )
{
     if (rear==front) throw "下溢"; 
     front=(front+1)%QueueSize; 
     return data[front];
} 
//取队头元素
template <class T>
T CirQueue<T>::GetQueue( )
{
    if (rear==front) throw "下溢"; 
    i=(front+1) % QueueSize;  
    return data[i];
}
//求队列长度
template <class T>
int CirQueue<T>::GetLength( )
{
    if (rear==front) throw "下溢"; 
    len=(rear-front+ QueueSize) % QueueSize;  
    return len;
}
 

 

链队列

template <class T>
class LinkQueue
{   
  public:
      LinkQueue( );     
      ~LinkQueue( ); 
      void EnQueue(T x);
      T DeQueue( );       
      T GetQueue( )；
      bool Empty( )；
  private:
      Node<T> *front, *rear;
};
//构造函数
template <class T>
LinkQueue<T>::LinkQueue( )
{
     front=new Node<T>; 
     front->next=NULL;  
     rear=front;
}
//入队
template <class T>
void LinkQueue<T>::EnQueue(T x)
{ 
    s=new Node<T>; 
    s->data=x; 
    s->next=NULL;
    rear->next=s; 
    rear=s;
}
//出队
template <class T>
T LinkQueue<T>::DeQueue( )
{ 
     if (rear==front) throw "下溢";
     p=front->next; 
     x=p->data; 
     front->next=p->next;        
     delete p;
     if (front->next==NULL) rear=front;   
     return x;
}