一个简单的发扑克牌游戏

给三名玩家轮流发5张牌，并且可以重洗。

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Random;
class Card{
    public int rank;//牌面值
    public String suit;//花色

    @Override
    public String toString() {
        return "Card{" +
                "rank=" + rank +
                ", suit='" + suit + '\'' +
                '}';
    }
}


public class CardDemo {
    public static final String[] SUITS = {"♠","♥","♣","♦"};
    //买一副牌
    private static List<Card> buyDeck(){
        List<Card> deck = new ArrayList<>(52);
        for(int i = 0;i < 4;i++){
            for(int j = 1;j <= 13;j++){
                String suit = SUITS[i];
                int rank = j;
                Card card = new Card();
                card.rank = rank;
                card.suit = suit;
                deck.add(card);
            }
        }
        return deck;
    }
    private static void swap(List<Card>deck,int i,int j){
        Card t = deck.get(i);
        deck.set(i,deck.get(j));
        deck.set(j,t);
    }
    private static void shuffle(List<Card> deck){
        Random random = new Random(20190905);
        for(int i = deck.size() - 1;i > 0;i--){
            int r = random.nextInt(i);
            swap(deck,i,r);
        }
    }
    public static void main(String[] args){
        List<Card> deck = buyDeck();
        System.out.println("刚买回来的牌：");
        System.out.println(deck);
        shuffle(deck);
        System.out.println("洗过的牌：");
        //三个人，每个人轮流抓5张牌
        List<List<Card>> hands = new ArrayList<>();
        hands.add(new ArrayList<>());
        hands.add(new ArrayList<>());
        hands.add(new ArrayList<>());
        for(int i = 0;i < 5;i++){
            for(int j = 0;j < 3;j++){
                hands.get(j).add(deck.remove(0));
            }
        }
        System.out.println("剩余的牌：");
        System.out.println(deck);
        System.out.println("A手中的牌：");
        System.out.println(hands.get(0));
        System.out.println("B手中的牌");
        System.out.println(hands.get(1));
        System.out.println("C手中的牌：");
        System.out.println(hands.get(2));
    }
}

执行结果：

刚买回来的牌：
[Card{rank=1, suit='♠'}, Card{rank=2, suit='♠'}, Card{rank=3, suit='♠'}, Card{rank=4, suit='♠'}, Card{rank=5, suit='♠'}, Card{rank=6, suit='♠'}, Card{rank=7, suit='♠'}, Card{rank=8, suit='♠'}, Card{rank=9, suit='♠'}, Card{rank=10, suit='♠'}, Card{rank=11, suit='♠'}, Card{rank=12, suit='♠'}, Card{rank=13, suit='♠'}, Card{rank=1, suit='♥'}, Card{rank=2, suit='♥'}, Card{rank=3, suit='♥'}, Card{rank=4, suit='♥'}, Card{rank=5, suit='♥'}, Card{rank=6, suit='♥'}, Card{rank=7, suit='♥'}, Card{rank=8, suit='♥'}, Card{rank=9, suit='♥'}, Card{rank=10, suit='♥'}, Card{rank=11, suit='♥'}, Card{rank=12, suit='♥'}, Card{rank=13, suit='♥'}, Card{rank=1, suit='♣'}, Card{rank=2, suit='♣'}, Card{rank=3, suit='♣'}, Card{rank=4, suit='♣'}, Card{rank=5, suit='♣'}, Card{rank=6, suit='♣'}, Card{rank=7, suit='♣'}, Card{rank=8, suit='♣'}, Card{rank=9, suit='♣'}, Card{rank=10, suit='♣'}, Card{rank=11, suit='♣'}, Card{rank=12, suit='♣'}, Card{rank=13, suit='♣'}, Card{rank=1, suit='♦'}, Card{rank=2, suit='♦'}, Card{rank=3, suit='♦'}, Card{rank=4, suit='♦'}, Card{rank=5, suit='♦'}, Card{rank=6, suit='♦'}, Card{rank=7, suit='♦'}, Card{rank=8, suit='♦'}, Card{rank=9, suit='♦'}, Card{rank=10, suit='♦'}, Card{rank=11, suit='♦'}, Card{rank=12, suit='♦'}, Card{rank=13, suit='♦'}]
洗过的牌：
剩余的牌：
[Card{rank=6, suit='♦'}, Card{rank=13, suit='♦'}, Card{rank=12, suit='♣'}, Card{rank=12, suit='♦'}, Card{rank=5, suit='♣'}, Card{rank=4, suit='♠'}, Card{rank=3, suit='♣'}, Card{rank=7, suit='♥'}, Card{rank=3, suit='♦'}, Card{rank=2, suit='♣'}, Card{rank=1, suit='♠'}, Card{rank=2, suit='♦'}, Card{rank=4, suit='♥'}, Card{rank=8, suit='♦'}, Card{rank=10, suit='♠'}, Card{rank=11, suit='♦'}, Card{rank=10, suit='♥'}, Card{rank=7, suit='♦'}, Card{rank=9, suit='♣'}, Card{rank=4, suit='♦'}, Card{rank=8, suit='♣'}, Card{rank=7, suit='♣'}, Card{rank=8, suit='♠'}, Card{rank=9, suit='♦'}, Card{rank=12, suit='♠'}, Card{rank=11, suit='♠'}, Card{rank=11, suit='♣'}, Card{rank=10, suit='♦'}, Card{rank=5, suit='♠'}, Card{rank=13, suit='♠'}, Card{rank=9, suit='♠'}, Card{rank=7, suit='♠'}, Card{rank=6, suit='♣'}, Card{rank=4, suit='♣'}, Card{rank=2, suit='♥'}, Card{rank=1, suit='♣'}, Card{rank=3, suit='♥'}]
A手中的牌：
[Card{rank=11, suit='♥'}, Card{rank=10, suit='♣'}, Card{rank=1, suit='♦'}, Card{rank=5, suit='♦'}, Card{rank=3, suit='♠'}]
B手中的牌
[Card{rank=6, suit='♥'}, Card{rank=13, suit='♥'}, Card{rank=9, suit='♥'}, Card{rank=8, suit='♥'}, Card{rank=5, suit='♥'}]
C手中的牌：
[Card{rank=13, suit='♣'}, Card{rank=2, suit='♠'}, Card{rank=12, suit='♥'}, Card{rank=6, suit='♠'}, Card{rank=1, suit='♥'}]