21点游戏java实现

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21点的基本知识

21点是世界上比较流行的扑克游戏项目

除掉大小王的一副扑克牌,共计52张牌

21点不区分花色,其中A----10均代表扑克牌本身的点数J Q K代表10

区分庄家和闲家,其中闲家可以优先要牌 而庄家在与闲家点数一样大的情况下,庄家赢,当有一方点数超过21点则另一方自动获胜,庄家的点数如果正好是21点,那么庄家直接获胜,其他情况以点数大的获胜

流程设计:

人机对战模式!

1由用户输入选择作庄还是作闲,电脑自动成为另一方

2随机为双方发两张牌

3询问闲家是否要牌,一直到闲家不再要或者发生暴点为止

4询问庄家要牌,一直到庄家不再要或者暴点或者正好21点为止

5比较游戏输赢

6询问是否继续

7统计战果

技术问题:

1. 发牌的时候随机发取

2. 发牌出来还要判断是否本张牌已经发过了!如果已经发过了,那么就要重新随机发另外一张牌,要保证牌的唯一性

3. 当给电脑派牌的时候 要考虑AI的问题!让电脑的逻辑稍微模拟人的思维

 主类:

import java.util.Scanner;

public class CardTest {
   
	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		int win = 0;
		int lose = 0;

		while (true) {
			System.out.println("请问做庄家1/闲家2?");
			int num = sc.nextInt();
			if (num == 1) {
				System.out.println("你选择做庄家");

				Ruler r = new Ruler();
				int n=r.play();
				if(n==0) { 
					 //庄家赢
					 win++; 
				 }
				 else
					 lose++;
			} else if (num == 2) {
				System.out.println("你选择做闲家");
				Player p = new Player();
				 int n= p.play();
				 if(n==1) { 
					 //闲家赢
					 win++;
					 
				 }
				 else
					 lose++;
			} else {
				System.out.println("输入错误,重新输入");
			}

			System.out.println("是否继续Y/N");
			if (sc.next().charAt(0) == ‘Y‘)
				continue;
			else {
				
				System.out.println("游戏结束");
				System.out.println("赢:"+win);
				System.out.println("输:"+lose);
				break;
			}

		}

	}

}

 

import java.util.Random;

public class Card {

	int index = 0; // 发牌索引下标
	String[] card = { "红桃A", "红桃2", "红桃3", "红桃4", "红桃5", "红桃6", "红桃7", "红桃8",
             "红桃9", "红桃10", "红桃J", "红桃Q", "红桃K", 
             "黑桃A",
			"黑桃2", "黑桃3", "黑桃4", "黑桃5", "黑桃6", "黑桃7", "黑桃8", "黑桃9", "黑桃10", "黑桃J", "黑桃Q", "黑桃K",
			"梅花A", "梅花2", "梅花3",
			"梅花4", "梅花5", "梅花6", "梅花7", "梅花8", "梅花9", "梅花10", "梅花J", "梅花Q", "梅花K", "方片A", "方片2", "方片3", "方片4", "方片5",
			"方片6", "方片7", "方片8", "方片9", "方片10", "方片J", "方片Q", "方片K", };

	public void show() {
		for (int i = 0; i < 52; i++) {
			System.out.println(card[i]);
		}

	}

	// 洗牌,打乱牌的顺序
	public void cutcards() {
		int index=0;
		Random rand = new Random();
		for (int i = 0; i < 52; i++) {
			int n = rand.nextInt(52);
			String temp;
			temp = card[n];
			card[n] = card[51 - n];
			card[51 - n] = temp;
		}

	}

	// 发牌,按顺序发牌,从下标0开始

	public String deal() {
		String c = card[index];
		index++;
		return c;
	}

}

 

public class JudgeNum {
  
	public int judgeString(String num) {
	
		String word= num.substring(2);
		if(word.equals("A")) {
			return  1;
			
		}
		else if(num.substring(2).equals("J")||
				num.substring(2).equals("Q")||
				num.substring(2).equals("K")||
				num.substring(2).equals("10")) {
			
			return 10;
		}
        	  
         
		else {
			  int n=(int)num.substring(2).charAt(0)-48;
			return n;
		}
		
		
		
	
	}
	
	
}

 

import java.util.Random;
import java.util.Scanner;

public class Player {

	/*
	 * 选择做闲家
           先得牌 
          您选择: 闲家 
发牌时间: 闲家:红桃K 方片3
庄家:黑桃6 梅花4 * 闲家要牌时间:
闲家是否要牌(Y/N)?
Y
发牌:黑桃A * 闲家是否要牌(Y/N)?
Y 发牌:梅花5 闲家是否要牌(Y/N)?
N 闲家不再要牌:
闲家点数:19点
庄家要牌时间:
庄家要牌:梅花5 * 庄家要牌:黑桃4
庄家不再要牌:
庄家点数19点 庄赢 * * * */ Scanner sc= new Scanner(System.in); public int play() { int playernum=0; int rulernum=0; String player1; String player2; String ruler1; String ruler2; JudgeNum judge = new JudgeNum(); Card c = new Card(); c.cutcards(); player1 = c.deal(); player2 = c.deal(); System.out.println("发牌时间:"); System.out.println("闲家:" + player1 + " " + player2); playernum=judge.judgeString(player1)+judge.judgeString(player2); ruler1 = c.deal(); ruler2 = c.deal(); System.out.println("庄家:" + ruler1 + " " + ruler2); rulernum=judge.judgeString(ruler1)+judge.judgeString(ruler2); System.out.println("闲家点数:"+playernum); System.out.println("庄家点数:"+rulernum); System.out.println("闲家要牌时间: " ); //循环要牌阶段 while(true) { System.out.println("闲家是否要牌(Y/N)? " ); char w = sc.next().charAt(0); if(w==‘Y‘) { System.out.println("闲家继续要牌"); String player3=c.deal(); System.out.println("闲家: "+player3 ); playernum=playernum+judge.judgeString(player3); System.out.println("闲家点数:"+playernum); if(playernum>21) { System.out.println("闲家爆掉,庄家赢"); return 0; } } else if(w==‘N‘) { System.out.println("闲家不再要牌,闲家点数:"+playernum); break; } } System.out.println("庄家要牌时间"); while(true) { if(rulernum>=playernum) { System.out.println("庄家不再要牌,庄家赢"); return 0; } else { System.out.println("庄家要牌时间:"); String ruler3=c.deal(); System.out.println("庄家:"+ruler3); rulernum=rulernum+judge.judgeString(ruler3); if(rulernum>21) { System.out.println("庄家点数"+rulernum); System.out.println("庄家爆掉,闲家赢"); return 1; } else if(rulernum>=playernum) { System.out.println("庄家点数:"+rulernum+" 闲家点数:"+playernum); System.out.println("庄家赢"); return 0; } } } } }

 

import java.util.Scanner;

public class Ruler {

	// 选择做庄家
	/*
	 * 闲家先要牌
	 * 
	 */

	Scanner sc = new Scanner(System.in);

	public int play() {
		int playernum = 0;
		int rulernum = 0;
		String player1;
		String player2;

		String ruler1;
		String ruler2;

		JudgeNum judge = new JudgeNum();
		Card c = new Card();
		c.cutcards();
		player1 = c.deal();
		player2 = c.deal();

		System.out.println("发牌时间:");
		System.out.println("闲家:" + player1 + " " + player2);
		playernum = judge.judgeString(player1) + judge.judgeString(player2);

		ruler1 = c.deal();
		ruler2 = c.deal();
		System.out.println("庄家:" + ruler1 + " " + ruler2);
		rulernum = judge.judgeString(ruler1) + judge.judgeString(ruler2);
		System.out.println("闲家点数:" + playernum);

		System.out.println("庄家点数:" + rulernum);

		System.out.println("闲家要牌时间:");

		while (true) {
			String player3;
			if (playernum <rulernum) {
				System.out.println("闲家要牌");
				player3 = c.deal();
				System.out.println("闲家:" + player3);
				playernum = playernum + judge.judgeString(player3);
			} else if (playernum > 21) {
				System.out.println("闲家点数:" + playernum);

				System.out.println("闲家爆掉,庄家赢");
				return 0;

			} else if (playernum >= 15) {
				System.out.println("闲家不再要牌");
				System.out.println("闲家点数" + playernum);
				break;

			}else {
				
				System.out.println("闲家要牌");
				String player4 = c.deal();
				System.out.println("闲家:" + player4);
				
				playernum=playernum+judge.judgeString(player4);
				
				
				 if (playernum > 21) {
						System.out.println("闲家点数:" + playernum);

						System.out.println("闲家爆掉,庄家赢");
						return 0;
			}

		}
	}
		
		
		// 庄家要牌时间
		System.out.println("庄家要牌时间:");

		while (true) {
			System.out.println("庄家是否要牌(Y/N)");
			char w = sc.next().charAt(0);
			if (w == ‘Y‘) {
				System.out.println("庄家继续要牌");
				String ruler3 = c.deal();
				System.out.println("庄家: " + ruler3);

				rulernum = rulernum + judge.judgeString(ruler3);
				System.out.println("庄家点数:" + rulernum);
				if (rulernum > 21) {
					System.out.println("庄家爆掉,闲家赢");
					return 1;
				}

			} else if (w == ‘N‘) {
				System.out.println("庄家不再要牌,庄家点数:" + rulernum);
				break;
			}

		}

		if (rulernum >= playernum) {
			System.out.println("庄家赢");
			return 0;
		} else {
			
			System.out.println("闲家赢");
			
			return 1;
		}
	
    
	}
   
}

 

 













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