步骤

• 准备牌
• 洗牌
• 发牌

控制台操作

运行页面

package com.atguigu.demo1.doudizhu1;

public class App {
    public static void main(String[] args) {
        new PokerGame();

    }
}

洗发牌

package com.atguigu.demo1.doudizhu1;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;

public class PokerGame {
    static ArrayList<String> list = new ArrayList<>();//牌盒
    //创建一个集合，用来添加牌的价值
    static HashMap<String,Integer> hm = new HashMap<>();
    // 使用静态代码块保证牌只有一副
    static{
        String[] color = {"♥","♦","♣","♠"};
        String[] number = {"3","4","5","6","7","8","9","10","J","Q","K","A","2"};

        for (int i = 0; i < color.length; i++) {
            for (int j = 0; j < number.length; j++) {
                list.add(color[i]+number[j]);
            }
        }
        list.add(" 小王");
        list.add(" 大王");
        // 给牌盒中的每一张牌添加价值
        hm.put("小王",100);
        hm.put("大王",101);
        for (int i = 0; i < number.length; i++) {
            hm.put(number[i],i+3);
        }
        System.out.println("牌盒中的牌和价值为："+hm);
    }

    public  PokerGame() {//空参构造
        Collections.shuffle(list);//洗牌
        // 发牌
        ArrayList<String> player1 = new ArrayList<>();
        ArrayList<String> player2 = new ArrayList<>();
        ArrayList<String> player3 = new ArrayList<>();
        ArrayList<String> dipai = new ArrayList<>();
        for (int i = 0; i < list.size(); i++) {
            if (i >= list.size() - 3) {
                dipai.add(list.get(i));
            } else if (i % 3 == 0) {
                player1.add(list.get(i));
            } else if (i % 3 == 1) {
                player2.add(list.get(i));
            } else if (i % 3 == 2) {
                player3.add(list.get(i));
            }
        }
        order(player1);
        order(player2);
        order(player3);
        order(dipai);
        // 打印玩家牌和底牌
        System.out.println("玩家1：" + player1);
        System.out.println("玩家2：" + player2);
        System.out.println("玩家3：" + player3);
        System.out.println("底牌： " + dipai);
    }

    public void order(ArrayList<String> list){
        Collections.sort(list, new Comparator<String>() {
            @Override
            public int compare(String o1, String o2) {
                //o1表示当前要插入到有序序列中的牌
                //o2表示有序序列中的牌
                String color1=o1.substring(0,1);
                int value1=getValue(o1);
                String color2=o2.substring(0,1);
                int value2=getValue(o2);
                int result=value1-value2;
                if (result==0){//如果价值相等，比较花色
                    return color1.compareTo(color2);
                }
                return result;
            }
        });
    }
    public int getValue(String poker){
        String number1=poker.substring(1);
        if (hm.containsKey(number1)){//如果牌面是数字或JQKA2
            return hm.get(number1);
        }else {//如果牌面是小王或大王
            return Integer.parseInt(number1);
        }
    }
}

运行结果