217. 存在重复元素

class Solution:
    def containsDuplicate(self, nums: List[int]) -> bool:
        return len(set(nums)) != len(nums)

class Solution:
    def containDuplicate(self,nums:List[int]) ->bool:
        return len(set(nums)) != len(nums)

标签：217,set,return,nums,重复,self,元素,List,len
来源： https://blog.csdn.net/sinat_37574187/article/details/120606759