package learnjava;

import java.util.Scanner;

import java.util.Random;

public class Hello {

public static void main(String[] args) {

Scanner scanner = new Scanner(System.in);

System.out.println("请选择一个选项：1.剪刀 2.石头 3.布");

int opt_player = scanner.nextInt();

Random r = new Random();

int opt_computer = 1+r.nextInt(3);

System.out.println(opt_computer);

switch(opt_player - opt_computer) {

case 0: System.out.println("平局"); break;

    case 1: 

    case -2: 

    System.out.println("玩家赢了！");

    break;

    case -1: 

    case 2: 

    System.out.println("电脑赢了！");

    break;

}

}

}