217. Contains Duplicate
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class Solution(object):
def containsDuplicate(self, nums):
"""
:type nums: List[int]
:rtype: bool
"""
dic={}
for i in nums:
if i not in dic:
dic[i]=1
else:
return True
return False
def containsDuplicate(self, nums):
"""
:type nums: List[int]
:rtype: bool
"""
dic={}
for i in nums:
if i not in dic:
dic[i]=1
else:
return True
return False
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