Java使用ArrayList实现扑克牌的示例代码

目录

• 前言
• 一、项目要求
• 二、具体实现
• 2.1 Card类
• 2.2 生成扑克牌
• 2.3 打乱顺序
• 2.4 发牌
• 三、Test.java

前言

学习了关于集合类的知识，我们可以做一个小项目来加深对集合类知识的学习！

一、项目要求

代码实现，一副扑克牌(不包括大小王)的购买、打乱、发牌。

二、具体实现

2.1 Card类

class Card {
    private int rank;//数字
    private String suit;//花色

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

    @Override
    public String toString() {
        return "[ " + this.suit + ":"+this.rank+" ]";
    }
}

2.2 生成扑克牌

 private static final String[] suits = {"", "", "", ""};

    //假设没有大小王：1 2 3............. 11 12 13
    public static List<Card> buyCard() {
        ArrayList<Card> cards = new ArrayList<>();
        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(rank, suit);
//                cards.add(card);
                cards.add(new Card(j,suits[i]));
            }
        }
        return cards;
    }

2.3 打乱顺序

 private static void swap(List<Card> cards, int i, int j) {
        Card tmp = cards.get(i);
        cards.set(i,cards.get(j));
        cards.set(j,tmp);
    }

    //洗牌
    public static void shuffle(List<Card> cards) {
        int size = cards.size();
        for (int i = size-1; i > 0 ; i--) {
            Random random = new Random();
            int rand = random.nextInt(i);
            swap(cards, i, rand);
        }
    }

2.4 发牌

		System.out.println("揭牌：3个人每个人轮流揭牌5张牌");

        ArrayList<List<Card>> hand = new ArrayList<>();

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

        hand.add(hand1);
        hand.add(hand2);
        hand.add(hand3);

        //每个人，轮流揭牌
        for (int i = 0; i < 5; i++) {
            for (int j = 0; j < 3; j++) {
                Card card = cards.remove(0);
                hand.get(j).add(card);
            }
        }

三、Test.java

import java.util.ArrayList;
import java.util.List;
import java.util.Random;

class Card {
    private int rank;//数字
    private String suit;//花色

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

    @Override
    public String toString() {
        return "[ " + this.suit + ":"+this.rank+" ]";
    }
}
public class Test1 {
    private static final String[] suits = {"", "", "", ""};

    //假设没有大小王：1 2 3............. 11 12 13
    public static List<Card> buyCard() {
        ArrayList<Card> cards = new ArrayList<>();
        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(rank, suit);
//                cards.add(card);
                cards.add(new Card(j,suits[i]));
            }
        }
        return cards;
    }

    private static void swap(List<Card> cards, int i, int j) {
        Card tmp = cards.get(i);
        cards.set(i,cards.get(j));
        cards.set(j,tmp);
    }

    //洗牌
    public static void shuffle(List<Card> cards) {
        int size = cards.size();
        for (int i = size-1; i > 0 ; i--) {
            Random random = new Random();
            int rand = random.nextInt(i);
            swap(cards, i, rand);
        }
    }

    public static void main(String[] args) {
        List<Card> cards = buyCard();
        System.out.println("买牌：" + cards);
        shuffle(cards);
        System.out.println("洗牌：" + cards);
        System.out.println("揭牌：3个人每个人轮流揭牌5张牌");

        ArrayList<List<Card>> hand = new ArrayList<>();

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

        hand.add(hand1);
        hand.add(hand2);
        hand.add(hand3);

        //每个人，轮流揭牌
        for (int i = 0; i < 5; i++) {
            for (int j = 0; j < 3; j++) {
                Card card = cards.remove(0);
                hand.get(j).add(card);
            }
        }
        System.out.println("第一个人的牌："+ hand1);
        System.out.println("第二个人的牌："+ hand2);
        System.out.println("第三个人的牌："+ hand3);
        System.out.println("剩下的牌："+cards);
    }

    public static void main1(String[] args) {
        // 1. 构造一副扑克牌
        // 2. 揭牌
        Card card = new Card(3,"");
        System.out.println(card);

    }
}

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