java集合--模拟斗地主发牌洗牌

import java.util.*;

/**
 * @Date: 2020/6/17 19:53
 */
public class Test04 {
    public static void main(String[] args) {
        //  请编写斗地主洗牌发牌程序
        HashMap pk = new HashMap<>();//存整副牌
        ArrayList num = new ArrayList<>();//牌面
        ArrayList color = new ArrayList<>();//存花色
        Collections.addAll(num, "2", "A", "K", "Q", "J", "10", "9", "8", "7", "6", "5", "4", "3");
        Collections.addAll(color, "♠", "♥", "♣", "♦");
        int id = 0;//给牌大到小编号
        pk.put(id++, "大");
        pk.put(id++, "小");
        //将牌面和花色拼接一起加入整副牌中
        for (int i = 0; i < num.size(); i++) {
            for (int j = 0; j < color.size(); j++) {
                pk.put(id++, color.get(j) + num.get(i));
            }
        }
        //将排序编号提取出来便于打乱顺序
        ArrayList list = new ArrayList<>();
        Set i = pk.keySet();
        for (Integer integer : i) {
            list.add(integer);
        }
        Collections.shuffle(list);//洗牌
        TreeSet play1 = new TreeSet<>();//玩家一
        TreeSet play2 = new TreeSet<>();//玩家二
        TreeSet play3 = new TreeSet<>();//玩家三
        TreeSet dipai = new TreeSet<>();//底牌
        //发牌
        for (int a = 0; a < list.size(); a++) {
            if (a >= 51) {
                dipai.add(list.get(a));
            } else if (a % 3 == 0) {
                play1.add(list.get(a));
            } else if (a % 3 == 1) {
                play2.add(list.get(a));
            } else {
                play3.add(list.get(a));
            }
        }
        heq("玩家一:", play1, pk);
        heq("玩家二:", play2, pk);
        heq("玩家三:", play3, pk);
        heq("底牌:", dipai, pk);
    }
    private static void heq(String p, TreeSet play, HashMap pk) {
        System.out.print(p + "\t");
        for (Integer index : play) {
            String s = pk.get(index);
            System.out.print(s + "\t");
        }
        System.out.println();
    }
}

玩家一: ♥2 ♣2 ♣A ♥K ♦K ♥Q ♠J ♥J ♦J ♥10 ♠9 ♥8 ♦8 ♠7 ♣7 ♠5 ♣5
玩家二: ♠2 ♦2 ♠K ♠Q ♣J ♣10 ♦10 ♣9 ♦9 ♠6 ♦6 ♥5 ♠4 ♥4 ♦4 ♠3 ♣3
玩家三: 大 小 ♠A ♥A ♦A ♣K ♣Q ♦Q ♥9 ♠8 ♣8 ♦7 ♥6 ♣6 ♦5 ♣4 ♦3
底牌: ♠10 ♥7 ♥3