数据结构之洗牌

任务：

列出牌

打乱牌

将牌分给三人，每个人分五张

1.Card.java

public class Card {
    private String suit;
    private int rank;

    public Card(String suit, int rank) {
        this.suit = suit;
        this.rank = 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;
    }

    @Override
    public String toString() {
        return suit +" " + rank;
    }
}

2.Test.java

public class Test {

    //花色
    private static final String[] SUITS = {"♥","♠","♣","♦"};

    public static List<Card> buyCard() {
        List<Card> cards = new ArrayList<>();
        for (int i = 0; i < SUITS.length; i++) {
            for (int j = 1; j <= 13; j++) {
                Card card = new Card(SUITS[i],j);
                cards.add(card);
            }
        }
        return cards;
    }

    public static void shuffle(List<Card> cards) {
        Random random = new Random();
        for (int i = cards.size()-1; i > 0 ; i--) {
            int j = random.nextInt(i);
            //交换
           /* int tmp = [i];
            [i] = [j];
            [j] = tmp;*/
            Card tmp = cards.get(i);
            cards.set(i,cards.get(j));
            cards.set(j,tmp);
        }
    }


    public static void main(String[] args) {
        List<Card> cards = buyCard();
        System.out.println(cards);
        System.out.println("洗牌：");
        shuffle(cards);
        System.out.println(cards);

        //3个人，每个人轮流揭牌5张
        List<Card> hand1 = new ArrayList<>();
        List<Card> hand2 = new ArrayList<>();
        List<Card> hand3 = new ArrayList<>();

        List<List<Card>> hand = new ArrayList<>();
        hand.add(hand1);
        hand.add(hand2);
        hand.add(hand3);

       /* 每个一次摸牌5张！！
       for (int i = 0; i < 3; i++) {
            for (int j = 0; j < 5; j++) {

            }
        }*/

        for (int i = 0; i < 5; i++) {
            for (int j = 0; j < 3; j++) {
                //揭牌的动作
                Card card = cards.remove(0);
                //如何翻到指定的人的手里呢？？
                hand.get(j).add(card);
            }
        }
        System.out.println("第1个人牌：");
        System.out.println(hand1);
        System.out.println("第2个人牌：");
        System.out.println(hand2);
        System.out.println("第3个人牌：");
        System.out.println(hand3);
        System.out.println("剩下的牌：");
        System.out.println(cards);

    }
}