1 package day03.d3.xunhuankongzhi; 2  3 import java.util.Scanner; 4  5 public class CaiQuan { 6  7     public static void main(String[] args) { 8         Scanner sc = new Scanner(System.in); 9         String[] arr = { "石头", "剪刀", "布" };10         while (true) {11             System.err.println("请选择你要出的手势:");12             int you;13             for(;;){14                 you = sc.nextInt();15                 if(you>=0&&you<3){16                     System.err.println("你出的是" + arr[you]);17                     break;18                 }else{19                     System.err.println("你出的手势无效,请重新选择你要出的手势！");20                     continue;21                 }                22             }23             24             int comp = (int) (Math.random() * 3);25             System.err.println("电脑出的是:" + arr[comp]);26             padDuan(you, comp);27             System.err.println("是否继续下一局(Y/N)：");28             String str;29             boolean bool;30             for (;;) {31                 str = sc.nextLine();32                 if (str.equals("Y")) {33                     bool = true;34                     break;35                 } else if (str.equals("N")) {36                     bool = false;37                     break;38                 } else {39                     System.err.println("输入有误，请重新输入！是否继续下一局(Y/N)：");40                     continue;41                 }42             }43 44             if (bool) {45 46             } else {47                 break;48             }49 50         }51     }52 53     public static void padDuan(int x, int y) {54         if (x == y) {55             System.err.println("英雄所见略同！");56         } else if ((x == 0 && y == 1) || (x == 1 && y == 2)57                 || (x == 2 && y == 0)) {58             System.err.println("恭喜你，你赢了！");59         } else {60             System.err.println("很遗憾，你输了，请再接再厉！");61         }62     }63 }