线性表-顺序栈

  1: //sqstack.cpp
  2: #ifndef SQSTACK_CPP_CPP
  3: #define SQSTACK_CPP_CPP
  4: 
  5: #include "sqstack.h"
  6: #include <iostream>
  7: 
  8: template<class T>
  9: SqStack<T>::SqStack():
 10: top(-1),maxsize(MAXSIZE)
 11: {
 12:   stack = new T[maxsize];
 13:   if(stack == NULL)
 14:   {
 15:     cerr<<"Fail!"<<endl;
 16:     exit(1);
 17:   }
 18: }
 19: 
 20: template<class T>
 21: SqStack<T>::SqStack(int size):
 22: top(-1),maxsize(size)
 23: {
 24:   stack = new T[maxsize];
 25:   if(stack == NULL)
 26:   {
 27:     cerr<<"Fail!"<<endl;
 28:     exit(1);
 29:   }
 30: }
 31: 
 32: template<class T>
 33: SqStack<T>::SqStack(T data[],int size):
 34: top(-1),maxsize(size)
 35: {
 36:   stack = new T[maxsize];
 37:   if(stack == NULL)
 38:   {
 39:     cerr<<"Fail!"<<endl;
 40:     exit(1);
 41:   }
 42: 
 43:   for(int i = 0; i < maxsize; ++i)
 44:   {
 45:     stack[i] = data[i];
 46:   }
 47:   top += maxsize;
 48: }
 49: 
 50: template<class T>
 51: SqStack<T>::~SqStack()
 52: {
 53:   delete [] stack;
 54: }
 55: 
 56: template<class T>
 57: void SqStack<T>::Push(const T &item) //压栈
 58: {
 59:   if(Full())
 60:   {
 61:     cerr<<"stack is full."<<endl;
 62:     exit(1);
 63:   }
 64: 
 65:   top++;
 66:   stack[top] = item;
 67: }
 68: 
 69: template<class T>
 70: T SqStack<T>::Pop()//弹栈
 71: {
 72:   if(Empty())
 73:   {
 74:     cerr<<"stack is empty."<<endl;
 75:     exit(1);
 76:   }
 77: 
 78:   T data = stack[top];
 79:   top--;
 80:   return data;
 81: }
 82: 
 83: template<class T>
 84: T SqStack<T>::GetTop()//返回栈顶元素
 85: {
 86:   if(Empty())
 87:   {
 88:     cerr<<"stack is empty."<<endl;
 89:     exit(1);
 90:   }
 91:   return stack[top];
 92: }
 93: 
 94: template<class T>
 95: bool SqStack<T>::Empty() const
 96: {
 97:   return (-1 == top);
 98: }
 99: 
100: template<class T>
101: bool SqStack<T>::Full() const
102: {
103:   return (maxsize -1 == top);
104: }
105: 
106: template<class T>
107: void SqStack<T>::Clear()
108: {
109:   top = -1;
110: }
111: 
112: 
113: #endif

  1: //sqstack.h
  2: 
  3: #ifndef SQSTACK_H_H
  4: #define SQSTACK_H_H
  5: 
  6: #include <iostream>
  7: using namespace std;
  8: 
  9: #define MAXSIZE 10
 10: 
 11: template<class T>
 12: class SqStack
 13: {
 14:   int top;
 15:   T * stack;
 16:   int maxsize;
 17: public:
 18:   SqStack();
 19:   SqStack(int size);
 20:   SqStack(T data[],int size);
 21:   ~SqStack();
 22: 
 23:   void Push(const T &item);
 24:   T Pop();
 25:   T GetTop();
 26: 
 27:   bool Empty() const;
 28:   bool Full() const;
 29: 
 30:   void Clear();
 31: 
 32: };
 33: 
 34: #endif

  1: //test.cpp
  2: 
  3: #include "sqstack.h"
  4: #include "sqstack.cpp"
  5: #include <iostream>
  6: 
  7: using namespace std;
  8: 
  9: int main(int argc, char * argv[])
 10: {
 11:   int data[] = {1,2,3,4,5,6,7,8,9,10};
 12:   SqStack<int> stack(data,10);
 13: 
 14:   while(!stack.Empty())
 15:   {
 16:     cout<<stack.Pop()<<endl;
 17:   }
 18:   return 0;
 19: }

另一个问题：两栈共享空间

  1: template<class T>  
  2: class SqStack  
  3: {  
  4:     int top1;  
  5:     int top2;  
  6:     T * stack;  
  7:     int maxsize;  
  8: public:  
  9:     ...  
 10: };