斗地主

public class CardDemo {
    private String size;
    private String color;
    private int index;

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

    public int getIndex() {
        return index;
    }

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

    public CardDemo() {
    }

    public String getSize() {
        return size;
    }

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

    public String getColor() {
        return color;
    }

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

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

public class CardGamesDemo {

    //  牌面 {"3", "4", "5", "6", "7", "8", "9", "10", "J", "Q", "K", "A", "2"};
    //  花色 {"♠","♥","♣","♦"};
    public static List<CardDemo> allCards = new ArrayList<>();

    static {
        //  定义牌面
        String[] sizes = {"3", "4", "5", "6", "7", "8", "9", "10", "J", "Q", "K", "A", "2"};
        //  定义花色
        String[] colors = {"♠","♥","♣","♦"};
        //  定义大小
        int index = 0;
        for (String size : sizes) {
            index ++;
            for (String color : colors) {
                CardDemo c = new CardDemo(size, color, index);
                allCards.add(c);
            }
        }

        //  大小王添加到集合中
        CardDemo small = new CardDemo("", "🐍", ++index);
        CardDemo big = new CardDemo("", "🐉", ++index);
        Collections.addAll(allCards, big, small);
        System.out.println("新牌" + allCards);
    }

    public static void main(String[] args) {
        Collections.shuffle(allCards);
        System.out.println("洗牌后：" + allCards);

        //  定义三个玩家（每个玩家都是一个集合）
        List<CardDemo> gName1 = new ArrayList<>();
        List<CardDemo> gName2 = new ArrayList<>();
        List<CardDemo> gName3 = new ArrayList<>();

        //  发牌（从集合中将 51 张牌分发给三位玩家，留三张为底牌）
        for (int i = 0; i < allCards.size() - 3; i++) {
            //  先拿到当前排对象
            CardDemo c = allCards.get(i);
            if (i % 3 == 0){
                gName1.add(c);
            }else if (i % 3 == 1){
                gName2.add(c);
            } else if (i % 3 == 2) {
                gName3.add(c);
            }else {
                System.out.println("少牌，从新来！！！");
            }
        }
        //  拿到最后三张底牌（把最后三张底牌截取一个子集合）
        List<CardDemo> last = allCards.subList(allCards.size() - 3, allCards.size());

        //  给玩家的牌排序
        sortCards(gName1);
        sortCards(gName2);
        sortCards(gName3);
        //  输出玩家的拍
        System.out.println("玩家1" + gName1);
        System.out.println("玩家2" + gName2);
        System.out.println("玩家3" + gName3);
        System.out.println("底牌：" + last);
    }

    //  给牌排序
    private static void sortCards(List<CardDemo> cards) {
        Collections.sort(cards, new Comparator<CardDemo>() {
            @Override
            public int compare(CardDemo o1, CardDemo o2) {
                //  制定规则
                return o2.getIndex() - o1.getIndex();
            }
        });
    }
}