【contains-duplicate】leetCode python实现

原题链接

contains-duplicate

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实现原理解析

该题比较简单，比较去重后的长度和原始长度是否一致即可

python代码实现

class Solution(object):
    def containsDuplicate(self, nums):
        """
        :type nums: List[int]
        :rtype: bool
        """
        setNums = set(nums)
        if len(nums) == len(setNums):
            return False
        else:
            return True