package com.inmind.test07;

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

public class Test6 {
    public static void main(String[] args) {
        int n = 15;
        ArrayList<Card> cards = randomCard(n);

        if (cards != null) {
            System.out.println("随机"+ n +"张牌:" );
            for (int i = 0; i < cards.size(); i++) {
                Card card = cards.get(i);
                card.showCard();
            }
        }else {
            System.out.println(n+"超越范围,无法获取牌" );
        }

        /*System.out.println();
        System.out.println();
        int n2 = 55;
        ArrayList<Card> cards2 = randomCard(n2);

        if (cards2 != null) {
            System.out.println("随机"+ n2 +"张牌:" );
            for (int i = 0; i < cards.size(); i++) {
                Card card = cards.get(i);
                card.showCard();
            }
        }else {
            System.out.println("随机"+ n2 +"张牌:\r\n超越范围,无法获取" );
        }*/
    }
    public static ArrayList<Card> randomCard(int n) {
        if (n > 54 || n < 0)
            return null;

        ArrayList<Card> rList = new ArrayList<>();
        ArrayList<Card> cards = allCard();

        Random r = new Random();
        for (int i = 0; i < n; i++) {
            int index = r.nextInt(cards.size());
            Card rCard = cards.remove(index);
            rList.add(rCard);
        }
        return rList;
    }

    public static ArrayList<Card> allCard() {
        ArrayList<Card> allList = new ArrayList<>();
        // 花色数组
        String[] hs = {"黑桃", "红桃", "梅花", "方片"};
        // 点数数组
        String[] ds = {"A", "2", "3", "4", "5", "6", "7", "8", "9", "10", "J", "Q", "K"};

        for (int H = 0; H < hs.length; H++) {
            for (int d = 0; d < ds.length; d++) {
                Card card = new Card(hs[H], ds[d]);
                // 添加到集合
                allList.add(card);
            }
        }
        return allList;
    }
}

class Card {
    private String ds; // 点数
    private String hs; // 花色
    public Card(String ds, String hs) {
        this.ds = ds;
        this.hs = hs;
    }
    public void showCard() {
        System.out.print(ds + hs+" ");
    }
}