题目描述

Python hash表

Python 代码

class Solution(object):
    def findNumsAppearOnce(self, nums):
        """
        :type nums: List[int]
        :rtype: List[int]
        """
        dict = {}
        for num in nums:
            if num in dict:
                dict[num] += 1
            else:
                dict[num] = 1

        res = []
        for num in dict:
            if dict[num] == 1:
                res.append(num)
        return res