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package chapter4;

import java.util.Random;

/**

* 扑克牌洗牌程序

*/

public class Shuffle {

private static void work() {

String[] kind = {"桃", "砖", "梅", "心"};

String[] numbers = {"A", "2", "3", "4", "5", "6", "7", "8", "9", "10", "J", "Q", "K"};

int[] cardFlag = new int[52];

Random rand = new Random();

for (int i = 0; i < 52; i++) {

int randNum = rand.nextInt(52);

while (cardFlag[randNum] == 1) {

randNum = rand.nextInt(52);

}

cardFlag[randNum] = 1;

System.out.print(kind[randNum / 13] + " ");

System.out.print(numbers[randNum % 13] + " ");

if ((i+1) % 13 == 0) {

System.out.println();

}

}

}

public static void main(String[] args) {

work();

}

}