题解 | #数组中只出现一次的两个数字#

import java.util.*;

public class Solution { /** * 代码中的类名、方法名、参数名已经指定，请勿修改，直接返回方法规定的值即可 * * * @param array int整型一维数组 * @return int整型一维数组 */ public int[] FindNumsAppearOnce (int[] array) { // write code here Set appearOnce = new HashSet<>(); for (int num : array){ int prevLen = appearOnce.size(); appearOnce.add(num); if (prevLen == appearOnce.size()){ appearOnce.remove(num); } } int[] result = appearOnce.stream().mapToInt(Integer::valueOf).toArray(); Arrays.sort(result); return result; } }