编写一个发牌程序（Java语言描述）

import java.util.Random;

public class Cards {
    
    /**
     * 初始化标志数组，牌均未发出
     */
    private int[][] cards = new int[4][13];
    
    /**
     * 花色
     */
    private String[] suits;
    
    /**
     * 点数
     */
    private String[] points;

    /**
     * 构造器初始化花色、点数
     * @param suits
     * @param points
     */
    public Cards(String[] suits, String[] points) {
        super();
        this.suits = suits;
        this.points = points;
    }

    public int[][] getCards() {
        return cards;
    }

    public void setCards(int[][] cards) {
        this.cards = cards;
    }

    public String[] getSuits() {
        return suits;
    }

    public void setSuits(String[] suits) {
        this.suits = suits;
    }

    public String[] getPoints() {
        return points;
    }

    public void setPoints(String[] points) {
        this.points = points;
    }

    public void sendCards(int n) {
        //记录扑克牌信息
        String sendCards = new String("发放的扑克牌为：");
        //生成随机数的生成对象
        Random randomBuilder = new Random();
        //定义发放扑克牌花色、点数
        int suit, point;
        for (int i = 0; i < n; ) {
            suit = randomBuilder.nextInt(4);
            point = randomBuilder.nextInt(13);
            if (cards[suit][point] == 1) {
                continue;
            } else {
                cards[suit][point] = 1;
                //追加新发扑克牌花色
                sendCards = sendCards + suits[suit];
                //追加点数
                sendCards = sendCards + points[point] + " ";
                //准备发放下一张牌
                i++;
            }
        }
        System.out.println(sendCards.toString());
    }
    
    public static void main(String[] args) {
        String[] suits = {"红心", "方片", "梅花", "黑桃"};
        String[] points = {"A", "2", "3", "4", "5", "6", "7", "8", "9", "10", "J", "Q", "K"};
        Cards cards = new Cards(suits, points);
        cards.sendCards(10);
    }
    
}

运行程序，发现在0<=x<=52范围内可以得到随机发牌的准确结果。
提供代码的main方法里是发10张牌，运行示例：

发放的扑克牌为：黑桃8 方片J 红心3 黑桃J 黑桃10 方片10 红心7 黑桃A 黑桃Q 红心A