ArrayList实现玩扑克牌（代码版）

public class Poker {
    private String suit;//牌的花色
    private int rank;//牌的数字
    public Poker(String suit, int rank) {
        this.suit = suit;
        this.rank = rank;
    }
    @Override
    public String toString() {//一定不要忘记重写toString方法
        return "{" +suit+" "+rank+"}";
    }
    public String getSuit() {
        return suit;
    }
    public void setSuit(String suit) {
        this.suit = suit;
    }
    public int getRank() {
        return rank;
    }
    public void setRank(int rank) {
        this.rank = rank;
    }
}

import java.util.*;
/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: WHY
 * Date: 2022-12-02
 * Time: 15:44
 */
public class Game {
    public String[] suits = {"♥", "♣", "♦", "♠"};
    //现在没有牌，我们得买牌，写一个买牌方法
    public List<Poker> buyPokers() {
        List<Poker> pokers = new ArrayList<>();
        for (int i = 0; i < 4; i++) {
            for (int j = 1; j <= 13; j++) {
                Poker poker = new Poker(suits[i], j);
                pokers.add(poker);
            }
        }
        return pokers;
    }
    //现在有牌了，我们要进行玩牌了，但是在玩牌前我们还要进行一个操作，那就是打乱操作
    //，现在的牌是有序的，我们要让它无序
    //所以要使用random操作，打乱牌，如果从前忘记打乱，那么假如是51，那么就是0-50，一次这样就会很麻烦，还会漏牌，如果用从后往前，直接遍历这个数组，从后往前遍历
    //进行洗牌操作
    // 将i下标扔到random 这个库方法中
    public void   wash(List<Poker> pokers) {
        for (int i = pokers.size() - 1; i > 0; i--) {
            Random random = new Random();
            int index = random.nextInt(i);
            swap(pokers,i,index);
        }
    }
    private  void swap(List<Poker> pokers,int i,int j){
        Poker tmp=pokers.get(i);
        pokers.set(i,pokers.get(j));//i
        pokers.set(j,tmp);
    }
    //洗完牌，可以开始玩牌了
    public List<List<Poker>> play( List<Poker> pokers) {
        List<List<Poker>> hand = new ArrayList<>();
        //玩牌规则是这样的，三个人每个人轮流抓五次牌
        //那么这就是一个二维数组，所以得继续new ArrayList
        List<Poker> hand1 = new ArrayList<>();
        List<Poker> hand2 = new ArrayList<>();
        List<Poker> hand3 = new ArrayList<>();
        //如何连接成二维数组，每一行都放入其中
        hand.add(hand1);
        hand.add(hand2);
        hand.add(hand3);
        //进行循环
        for (int i = 0; i < 5; i++) {
            for (int j = 0; j < 3; j++) {
                //揭牌就相当于删除数组的0下标，删的这个元素放到hand中，调用remove方法进行删除
                Poker removerPoker = pokers.remove(0);
                hand.get(j).add(removerPoker);
            }
        }
        return hand;
    }
}

mport java.util.List;
/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: WHY
 * Date: 2022-12-02
 * Time: 15:53
 */
public class Test {
    public static void main(String[] args) {
        Game game=new Game();
        List<Poker> pokers = game.buyPokers();
        System.out.println(pokers);
        //洗牌
        game.wash(pokers);
        //
        System.out.println("洗牌：");
        System.out.println(pokers);
        //揭牌
        System.out.println("揭牌");
        List<List<Poker>>hand= game.play(pokers);
        for (int i = 0; i < hand.size(); i++) {
            System.out.println("第 "+(i+1)+"个人的牌："+hand.get(i));
        }
        System.out.println("剩下的牌：");
        System.out.println(pokers);
    }
}