public class p18 {
public static void main(String[] args) {
//扑克牌洗牌 52张
//数组下标就是值
//0--12 13--25 26--38 39--51
//黑桃, 红心, 方块, 梅花
//每组13个元素, 元素 / 13 =花色
//元素 % 13 = 牌面数值
//生成一个0--51的随机数字 然后交换值就洗牌了
//牌的花色数组
String[] cardcolor = {"黑桃", "红心", "方块", "梅花"};
//牌面数值
String[] cardvalue = {"A","2","3","4","5","6","7","8","9","10","K","Q","J"};
final int n = 52; //52张牌
int[] cards = new int[n];
//把cards数组赋值 新牌
for (int i = 0; i < cards.length; i++) {
cards[i] = i;
}
//洗牌前的打印出来
System.out.println("洗牌前: ");
for (int i = 0; i < cards.length; i++) {
System.out.printf("[%d] %s-%s ,",cards[i],cardcolor[i / 13],cardvalue[i%13]);
}
System.out.println("");
System.out.println("洗牌后: ");
//进行洗牌
//随机生成0--51之间的数字newIndex; cards[i]和cards[newIndes]交换
for (int i = 0; i < cards.length; i++) {
int newIndex = (int)(Math.random() * n); //生成随机数
int temp = cards[i];
cards[i] = cards[newIndex]; //交换牌的位置
cards[newIndex] = temp;
}
//洗牌后打印出来
for (int i = 0; i < cards.length; i++) {
System.out.printf("[%d] %s-%s ,",cards[i],cardcolor[cards[i]/ 13],cardvalue[cards[i]%13]);
}
}
}
Java扑克牌洗牌代码
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转载自blog.csdn.net/qq_43314793/article/details/90106850
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