數組中只出現一次的數字-python

思路：用一個字典統計出每個數字出現的次數，然后遍歷字典，找到只出現一次的

# -*- coding:utf-8 -*-
class Solution:
    # 返回[a,b] 其中ab是出現一次的兩個數字
    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