java实现猜拳游戏试题

public class Player {
 Scanner sc; 
 public void initPl() { 
 sc = new Scanner(System.in);
 }
 //玩家出拳方法
 public int showFinger() {
 System.out.println("请输入您的出拳：1.剪刀，2.石头，3.布，4.结束本局");
 int result = sc.nextInt();
 return result; 
 } 
}

public class Computer { 
 Random random;
 public void initCom() { 
 random = new Random();
 }
 //电脑开始出拳,返回1到3的随机数
 public int showFingerCom() { 
 return random.nextInt(3)+1;
 } 
}

public void init() { 
 player = new Player();
 player.initPl();
 computer = new Computer();
 computer.initCom();
 sc = new Scanner(System.in);
  count = 0;//局数为0
  Grade = 0;//分数为0  
 }

public int Grades(int plg,int comg,int num) {
 int a = 0;
 if(plg==1&comg==3 | plg==2&comg==1 | plg==3&comg==2) {
 System.out.println("第"+num+"局，恭喜您这局赢了");
 a = 1;
 }else if(plg==1&comg==2 | plg==2&comg==3 | plg==3&comg==1) {
 System.out.println("第"+num+"局，很抱歉，这局您输了");
 a = -1;
 }else if (plg==comg) {
 System.out.println("第"+num+"局，这局平局");
 a = 0;
 }
 return a;
 }

public void print(int sum,int sumGrade) {
 System.out.println("游戏结束！");
 if(sumGrade<0) { 
 System.out.println("本次游戏进行"+sum+"局,您的得分为："+sumGrade+"分，本次游戏很遗憾您输了");
 }else if(sumGrade==0) {
 System.out.println("本次游戏进行"+sum+"局,您的得分为："+sumGrade+"分，本次游戏平局"); 
 }else if(sumGrade>0) {
 System.out.println("本次游戏进行"+sum+"局,您的得分为："+sumGrade+"分，恭喜您赢了"); 
 }
 }
 //数字转变为字符串用于结果显示
 public String punchesName(int result) {
 String str = "";
 switch(result) {
 case 1: str = "剪刀";break;
 case 2: str = "石头";break;
 case 3: str = "布";break;  
 }  
 return str;
 }

public void start() {
 while(flag) {
 int playerPunches = player.showFinger();
 switch(playerPunches) {
 case 1:
 case 2:
 case 3:{
 count++;
 System.out.println("您出的是："+punchesName(playerPunches));
 int comPunches = computer.showFingerCom();
  System.out.println("机器出的是："+punchesName(comPunches));
  int ge = Grades(playerPunches,comPunches,count);
  Grade+=ge;//总得分
  break;
 }
 case 4:{
 print(count,Grade);//输出总得分与局数
 flag = false;//结束循环，结束游戏
  break;
  }
 default:
 System.out.println("输入有误，请重新输入");break;
 }
 } 
 }

public class Game {
 Player player;
 Computer computer;
 int count;//局数
 Scanner sc;
 int Grade;//得分
 boolean flag = true;
 、、、、初始化，得分，输出.....

public static void main(String[] args) {
 System.out.println("欢迎进行猜拳游戏！");
 Game game = new Game();
 game.init();//游戏初始化
 game.start();//游戏开始
 }