题解 | #只出现一次的牛II#python哈希表

#
# 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 nums int整型一维数组 
# @return int整型一维数组
#
class Solution:
    def findSingleCowsII(self , nums: List[int]) -> List[int]:
        dic = {}
        for value in nums:
            if value not in dic.keys():
                dic[value] = 1
            else:
                dic[value] += 1
        answer = []
        for key, cnt in dic.items():
            if cnt == 1:
                answer.append(key)
        answer.sort()
        return answer