java扑克牌洗牌

 需求：

1.数组保存54张扑克牌

2.随机打乱扑克牌

详细代码：

package cn.itcast.array.practices;import java.util.Random;/*打乱扑克牌*/
public class Test9 {public static void main(String[] args) {//创建colours,numbers,cards数组String[] colours = {"♥", "♠", "♦", "♣"};String[] numbers = {"2", "A", "K", "Q", "J", "10", "9", "8", "7", "6", "5", "4", "3",};String[] cards = new String[54];cards[0] = "大王";cards[1] = "小王";//循环迭代 出一整副牌int count = 2;  //因为大小王占了两个索引，重新定义索引for (int i = 0; i < numbers.length; i++) {for (int j = 0; j < colours.length; j++) {cards[count] = colours[j] + numbers[i]; //牌索引要从2开始count++;}}//洗牌，就是循环索引一个数与随机索引的数进行交换Random random = new Random();for (int i = 0; i < cards.length; i++) {int number = random.nextInt(cards.length);String temp = cards[i];cards[i] = cards[number];cards[number] = temp;}//输出并换行for (int i = 0; i < cards.length; i++) {System.out.print(cards[i]);if ((i + 1) % 5 == 0) {System.out.println();}}}
}

运行结果：

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