class Solution(object):
def singleNumber(self, nums):
"""
:type nums: List[int]
:rtype: int
"""
return -sum(nums)+2*sum(set(nums))
class Solution(object):
def singleNumber(self, nums):
"""
:type nums: List[int]
:rtype: int
"""
return -sum(nums)+2*sum(set(nums))
本文标题：136. Single Number
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