http://www.verejava.com/?id=169931132381103

/**
    知识点：Random 随机数类洗牌
*/
import java.util.*;

public class TestRandomCard {
    
    public static void main(String[] args) {
        String[] cards = { "A", "A", "A", "A", 
                "2", "2", "2", "2", 
                "3", "3", "3", "3", 
                "4", "4", "4", "4", 
                "5", "5", "5", "5", 
                "6", "6", "6", "6", 
                "7", "7", "7", "7", 
                "8", "8", "8", "8", 
                "9", "9", "9", "9", 
                "10", "10", "10", "10", 
                "J", "J", "J", "J", 
                "Q", "Q", "Q", "Q", 
                "K", "K", "K", "K", 
                "小王", "大王" };
        System.out.println("原牌:");
        for (int i = 0; i < cards.length; i++) {
            System.out.print(cards[i] + ",");
        }

        //随机打乱
        Set set = new HashSet();
        Random rn = new Random();
        while (true) {
            set.add(rn.nextInt(54));
            if (set.size() == 54) {
                break;
            }
        }
        System.out.println("\n54个随机索引号:");
        Object[] iter = set.toArray();
        for (int i = 0; i < iter.length; i++) {
            System.out.print(iter[i] + ",");
        }

    }
}

http://www.verejava.com/?id=169931132381103