leetcode-ac/python3-leetcode/leetcode136-single-number-method1.py at master · yanglr/leetcode-ac · GitHub

Name: leetcode-ac/python3-leetcode/leetcode136-single-number-method1.py at master · yanglr/leetcode-ac · GitHub
Rating: 4.4 (1911 reviews)
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# -*- coding: utf-8 -*-
fromtypingimportList

classSolution:
defsingleNumber(self, nums: List[int]) ->int:
res=0
d=dict()
fornuminnums:
ifnumnotind:
d[num] =1
else:
d[num] +=1
res=next(kfork, valind.items() ifval==1)
returnres

#以下是测试
sol=Solution()
print(sol.singleNumber([6, 4, 6, 2, 4]))