Java 中利用随机数的猜拳游戏

Java 中利用随机数的猜拳游戏，实现非常简单，重难点在于随机数的产生。

首先 GameJude 类是用于判断输赢的一个类：

package testGame;

public class GameJudge {
	private String marks1 = "拳头";
	private String marks2 = "拳头";
	private int personCout = 0; 
	private int computerCout = 0;
	private int cout = 0;
	public void juge(int person, int computer) {
		switch (person) {
		case 1:
			marks1 = "石头";
			break;
		case 2:
			marks1 = "剪刀";
			break;
		case 3:
			marks1 = "布";
			break;
		case 4:
			System.out.println("用户赢"+this.personCout+"次\n电脑赢"+this.computerCout+"次\n平局"+this.cout+"次");
			return;
		}
		switch (computer) {
		case 1:
			marks2 = "石头";
			break;
		case 2:
			marks2 = "剪刀";
			break;
		case 3:
			marks2 = "布";
			break;
		}

		if (person == computer) {
			System.out.println("用户出" + marks1 + "\n电脑出" + marks2 + "\n结果：平局！");
			cout++;
		} else if ((person == 1 && computer == 2)|| (person == 2 && computer == 3)|| (person == 3 && computer == 1)) {
			System.out.println("用户出" + marks1 + "\n电脑出" + marks2 + "\n结果：用户赢！");
			personCout++;
		} else {
			System.out.println("用户出" + marks1 + "\n电脑出" + marks2 + "\n结果：电脑赢！");
			computerCout++;
		}
	}
//    public void shouGameCout(){
//        System.out.println("用户赢"+this.personCout+"次\n电脑赢"+this.computerCout+"次\n平局"+this.cout+"次");
//    }
}
​

接下 TestGame 类是一个启动类，显示输入输出，退出统计游戏结果：

package testGame;

import java.util.Scanner;
import java.util.Random;
public class TestGame {

	/**
	 * @param 显示输入输出，推出时统计游戏结果
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner sc = new Scanner(System.in);
		Random r = new Random();
		GameJudge g = new GameJudge();
		int person = 0;
		while (person != 4) {
			System.out.println("------------------猜拳游戏------------------");
			System.out.println("请出拳（1、石头；2、剪刀；3、布；4、退出）");
			person = sc.nextInt();
			if( person == 1 || person == 2 || person == 3 || person == 4){
				int computer = r.nextInt(3)+1;
				g.juge(person, computer);
			}else{
				System.out.println("输入有误，请重新输入");
				continue;
			}
		}
	}
}
​