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
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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
![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](/uploads/image/z/7245377-17-7.jpg?t=%E5%AF%BB%E6%B1%82Java%E9%AB%98%E6%89%8B%2C%E7%94%A8%E6%95%B0%E7%BB%84%E5%AE%9E%E7%8E%B0%E9%9A%8F%E6%9C%BA%E8%BE%93%E5%87%BA1%2C2%2C3%2C4%2C5%2C6%2C7%2C8%2C9%2C10%2CJ%2CQ%2CK%E4%B8%AD%E7%9A%84%E5%9B%9B%E4%B8%AA%E6%95%B0)
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.
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.
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