人机猜拳,这里我们定义输入0是剪刀,1是石头,2是布。电脑的数字为随机产生,可以用Random。 采用三局制。三局中每一小局中都有输出显示小局的获胜方三局比赛结束后,若电脑获胜次数等于玩家,则输出:平局,比赛结束;若电脑获胜次数大于玩家,则输出:电脑获胜,游戏结束 ;若电脑获胜次数小于玩家,则输出:玩家获胜,游戏结束
java">import java.util.Scanner;
import java.util.Random;
public class 作业选择循环练习 {private static String Check(int x, int ComputerRandoms) {if (x == ComputerRandoms) {return "平局";} else if ((x == 0 && ComputerRandoms == 2) ||(x == 1 && ComputerRandoms == 0) ||(x == 2 && ComputerRandoms == 1)) {return "玩家获胜";} else {return "电脑获胜";}}public static void main(String[] args) {Scanner sc = new Scanner(System.in);//用户输入Random random = new Random();//电脑随机产生数字int playerwin = 0;int computerwin = 0;for (int i = 0; i < 3; i++) {int x;//玩家输入System.out.println("请输入0:剪刀,1:石头,2:布");x = sc.nextInt();//验证玩家的输入if (x < 0 || x > 2) {System.out.println("请重新输入");continue;//如果重新输入错误,玩家将重新进行这一局}int ComputerRandom = random.nextInt(3);//电脑产生随机数//需要输出电脑输出的结果System.out.println("你的结果是:" + sc(x) + ",电脑的结果是:" + sc(ComputerRandom));String result = Check(x, ComputerRandom);//调用方法看看这一局的胜负System.out.println("这一句结果" + result);//更新获胜次数if (result == "玩家获胜") {playerwin++;} else if (result == "电脑获胜") {computerwin++;}}//判断最后的结果并且输出if (playerwin > computerwin) {System.out.println("玩家获胜");} else if (playerwin < computerwin) {System.out.println("电脑获胜");} else {System.out.println("平局");}sc.close();}private static String sc(int chice){switch(chice){case 0:return "剪刀";case 1:return "石头";case 2:return "布";default:return "未知";}}
}