从数组中随机选择一个数
public static void main(String[] args) {
int []numbers = {1,2,5,4,3,46,66,36,6};
Random random = new Random();
int index = random.nextInt(numbers.length);
System.out.println(numbers[index]);
}
public static void main(String[] args) {
int []numbers = {1,2,5,4,3,46,66,36,6};
Random random = new Random();
int index = random.nextInt(numbers.length);
System.out.println(numbers[index]);
}