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寻求Java高手,用数组实现随机输出1,2,3,4,5,6,7,8,9,10,J,Q,K中的四个数

来源:学生作业帮 编辑:作业帮 分类:综合作业 时间:2024/05/25 04:29:15
寻求Java高手,用数组实现随机输出1,2,3,4,5,6,7,8,9,10,J,Q,K中的四个数
public static void main(String[] args) {
String[] a = {"1","2","3","4","5","6","7","8","9","10","j","q","k"};
String[] b = new String[4];
int n = a.length;
for(int i = 0; i < b.length; i++) {
int r = (int)(Math.random()*n);
b[i] = a[r];
a[r] = a[n - 1];
n--;
System.out.print(b[i]+" ");
}
}
//你也可以自己改成用户输入.