package com.itranswarp.learnjava;

import java.util.Scanner;

/**

 * switch实现石头/剪子/布并判断胜负

 */

public class Main {

public static void main(String[] args) {

System.out.println("please choice:");

System.out.println(" 1: Rock");

System.out.println(" 2: Scissors");

System.out.println(" 3: Paper");

// 用户输入:

int choice = 0;

int random = 0;

Scanner scanner = new Scanner(System.in);

System.out.println("Input your choice:");

choice = scanner.nextInt();

switch (choice) {

// TODO:

case 1:

System.out.println("You choose Rock");

// 计算机随机数 1, 2, 3:

random = 1 + (int) Math.random() * 3;

switch(random) {

case 1:

System.out.println("Machine choose Rock");

System.out.println("draw");

break;

case 2:

System.out.println("Machine choose Scissors");

System.out.println("you win!");

break;

case 3:

System.out.println("Machine choose paper");

System.out.println("you lose");

break;

}

break;

case 2:

System.out.println("You choose Scissors");

random = 1 + (int) Math.random() * 3;

switch(random) {

case 1:

System.out.println("Machine choose Rock");

System.out.println("you lose");

break;

case 2:

System.out.println("Machine choose Scissors");

System.out.println("draw");

break;

case 3:

System.out.println("Machine choose paper");

System.out.println("you win");

break;

}

break;

case 3:

System.out.println("You choose Paper");

random = 1 + (int) Math.random() * 3;

switch(random) {

case 1:

System.out.println("Machine choose Rock");

System.out.println("you win");

break;

case 2:

System.out.println("Machine choose Scissors");

System.out.println("you lose");

break;

case 3:

System.out.println("Machine choose paper");

System.out.println("draw");

break;

}

break;

default:

System.out.println("error select");

break;

}

}

}