剪刀、石头、布

[java]代码库
package cn.itcast_01;
 
import java.util.Random;
import java.util.Scanner;
 
/*
 * 对猜拳游戏的优化
 * 
 */
public class GuessGame2 {
    public static void main(String[] args) {
        while(true){
        //键盘录入
        System.out.println("0:剪刀、1：石头、2：布  、3：退出游戏    请输入你的数字：");
        Scanner sc = new Scanner(System.in);
        int number = sc.nextInt();
         
        //产生0--2随机数
        Random rd = new Random();
        int pcnumber = rd.nextInt(3);
         
        //判断是否退出
        if(number == 3){
            System.out.println("欢迎再来！！！");
            break;
        }
         
        //比较并输出结果
        switch (number) {
        case 0:
        {
            if(pcnumber ==0){
                System.out.println("你出：剪刀          电脑出：剪刀");
                System.out.println("平局");
            }else if (pcnumber ==1){
                System.out.println("你出：剪刀          电脑出：石头");
                System.out.println("你输了");              
            }else{
                System.out.println("你出：剪刀          电脑出：布");
                System.out.println("你赢了");  
                 
            }
             
        }
            break;
        case 1:
        {               
            if(pcnumber ==0){
                System.out.println("你出：石头          电脑出：剪刀");
                System.out.println("你赢了");
            }else if (pcnumber ==1){
                System.out.println("你出：石头          电脑出：石头");
                System.out.println("平局");               
            }else{
                System.out.println("你出：石头          电脑出：布");
                System.out.println("你输了");              
            }
             
        }
             
            break;
        case 2:
        {               
            if(pcnumber ==0){
                System.out.println("你出：布          电脑出：剪刀");
                System.out.println("你输了");
            }else if (pcnumber ==1){
                System.out.println("你出：布          电脑出：石头");
                System.out.println("你赢了");              
            }else{
                System.out.println("你出：布          电脑出：布");
                System.out.println("平局");               
            }
             
        }
             
            break;
 
        default:
            System.out.println("您输入有误，请按提示输入！！！");
            break;
        }
 
         
         
        }   
         
    }
 
 
 
}
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