C++实现栈数据结构
#ifndef __STACK__ #define __STACK__ class CStack { int * m_pData; int m_nCount; int m_nPos; public: CStack(int nLength); ~CStack(); bool isFull(); bool isEmpty(); void push(const int & value); bool pop(int &value); }; CStack::CStack(int nLength) {//创建栈类时,确定其大小 m_pData = new int[nLength]; memset(m_pData,0,nLength); m_nPos = -1; m_nCount = nLength;//用来判断栈是否满 } bool CStack::isFull() { return m_nPos == m_nCount-1; } bool CStack::isEmpty() { return m_nPos == -1; } void CStack::push(const int & value) { if(!isFull()) { m_pData[++m_nPos] = value; } } bool CStack::pop(int &value) { if(isEmpty())return false; value = m_pData[m_nPos--]; return true; } CStack::~CStack() { delete m_pData; } #endif
调用方法如下:
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#include#include "stack.h" int main(int argc, char* argv[]) { CStack stack = 5; stack.push(1); stack.push(2); stack.push(3); stack.push(4); stack.push(5); stack.push(6); int c =0; stack.pop(c); cout << c << endl; stack.pop(c); cout << c << endl; stack.pop(c); cout << c << endl; stack.pop(c); cout << c << endl; stack.pop(c); cout << c << endl; stack.pop(c); cout << c << endl; getchar(); }
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