数组中只出现一次的数字-python

思路：用一个字典统计出每个数字出现的次数，然后遍历字典，找到只出现一次的

# -*- coding:utf-8 -*-
class Solution:
    # 返回[a,b] 其中ab是出现一次的两个数字
    def FindNumsAppearOnce(self, array):
        # write code here
        dic = {}
        for i in array:
            if i in dic:
                dic[i] += 1
            else:
                dic[i] = 1
        res = []
        for i in dic:
            if dic[i] == 1:
                res.append(i)
        return res