函数中形参数组num1[], num2[]的赋值问题，求大神解答，感激不尽！！！

Question

public class FindNumAppearOnce {
public void findAppearOnce(int [] array,int num1[] , int num2[]) {
int[] temp = new int[6];
int k = 0;
for (int i = 0; i < array.length - 1; i ++) {
for (int j = i + 1; j < array.length; j ++){
if (array[i] == array[j]) break;

            if (j >= array.length - 1) {
            temp[k] = array[i];
            k ++;
            }
        }
    }
    num1[0] = temp[0];
    num2[0] = temp[1];
}

public static void main(String[] args) {
    int[] array = {2,4,3,6,3,2,5,5};
    int[] num1 = new int[0];
    int[] num2 = new int[0];
    new FindNumAppearOnce().findAppearOnce(array, num1, num2);
    System.out.println(num1[0] + num2[0]);

}

}

Answer 1

 int[] num1 = new int[0];
    int[] num2 = new int[0];

        ->

        int[] num1 = new int[1];
    int[] num2 = new int[1];