斗地主 定义54张牌 洗牌 发牌 排序等（）

package com.mlt.d4_collection_test;

import java.util.*;

/**
 * 斗地主游戏
 */


public class Test1 {
    //定义一个静态集合来存放54张牌
    public static  List<Card> list =new ArrayList<>();
    static {
        String[] sizes={"3","4","5","6","7","8","9","10","J","Q","K","A","2"};
        String[] colors={"♥","♠","♦","♣"};
        int index=0;
        for (String size : sizes) {
            index++;
            for (String color : colors) {
                Card c =new Card(size,color,index);
                list.add(c);
            }
        }
        //大小王
        Card c1 =new Card("","?",++index);
        Card c2 =new Card("","?",++index);
        Collections.addAll(list,c1,c2);
        System.out.println(list);
    }
    public static void main(String[] args) {
        //1.洗牌
        Collections.shuffle(list);
        System.out.println(list);
        //2.定义三个玩家
        List<Card> xm =new ArrayList<>();
        List<Card> xh =new ArrayList<>();
        List<Card> xz =new ArrayList<>();

        //3.发牌
        for (int i = 0; i < list.size(); i++) {
            Card c =list.get(i);
            if (i % 3==0){
                xm.add(c);
            } else if (i % 3==1) {
                xh.add(c);
            } else if (i % 3 ==2) {
                xz.add(c);
            }
        }
        List<Card> lastThreecadrs=list.subList(list.size()-3,list.size());

        //4.排序
        paixu(xm);
        paixu(xh);
        paixu(xz);
        //大音
        System.out.println("小明"+xm);
        System.out.println("小红"+xh);
        System.out.println("小张"+xz);
        System.out.println(lastThreecadrs);
    }

    private static void paixu(List<Card> size) {
        Collections.sort(size,( o1,  o2)-> o2.getIndex()-o1.getIndex());
    }
}

//Card类

package com.mlt.d4_collection_test;

public class Card {
    private String size;
    private  String color;

    public int getIndex() {
        return index;
    }

    public void setIndex(int index) {
        this.index = index;
    }

    private  int index;
    public  Card(){

    }
    public Card(String size, String color,int index) {
        this.size = size;
        this.color = color;
        this.index = index;
    }

    public String getSize() {
        return size;
    }

    public void setSize(String size) {
        this.size = size;
    }

    @Override
    public String toString() {
        return size+color;
    }

    public String getColor() {
        return color;
    }

    public void setColor(String color) {
        this.color = color;
    }
}