4 栈的操作
1 package com.wwj.cn; 2 3 public interface SqStackInter { 4 boolean Push(SqStack sqStack, SElemType e);// 进栈操作 5 6 boolean Pop(SqStack sqStack, SElemType e);// 出栈操作 7 8 void InitStack(SqStack sqStack);// 初始化栈 9 10 boolean StackEmpty(SqStack sqStack);// 判断是否为空 11 12 boolean GetTop(SqStack sqStack, SElemType e);// 输出栈顶元素 13 14 void OutStack(SqStack sqStack);// 输出所有元素 15 16 }
1 package com.wwj.cn; 2 3 public class SqStackOperation implements SqStackInter { 4 private final int MAXSIZE = 10; 5 6 @Override 7 public boolean Push(SqStack sqStack, SElemType e) { 8 if (sqStack.top == MAXSIZE - 1) { 9 return false; 10 } else { 11 sqStack.data[sqStack.top] = e.getE(); 12 sqStack.top++; 13 return true; 14 } 15 } 16 17 @Override 18 public boolean Pop(SqStack sqStack, SElemType e) { 19 if (sqStack.top == -1) { 20 return false; 21 } else { 22 e.setE(sqStack.data[sqStack.top]); 23 sqStack.top--; 24 return true; 25 } 26 } 27 28 @Override 29 public void InitStack(SqStack sqStack) { 30 sqStack.top = -1; 31 32 } 33 34 @Override 35 public boolean StackEmpty(SqStack sqStack) { 36 if (sqStack.top == -1) { 37 return true; 38 } else { 39 return false; 40 } 41 42 } 43 44 @Override 45 public boolean GetTop(SqStack sqStack, SElemType e) { 46 if (sqStack.top == -1) { 47 return false; 48 } else { 49 e.setE(sqStack.data[sqStack.top]); 50 return true; 51 } 52 } 53 54 @Override 55 public void OutStack(SqStack sqStack) { 56 57 if (sqStack.top != -1) { 58 while (sqStack.top != -1) { 59 System.out.print(sqStack.data[sqStack.top] + " "); 60 sqStack.top--; 61 62 } 63 System.out.println(""); 64 } else { 65 System.out.println("This Stack is Empty!"); 66 } 67 68 } 69 70 }
posted on 2017-05-25 22:27 WenjieWangFlyToWorld 阅读(112) 评论(0) 编辑 收藏 举报