你寫counter同用dict一樣都係冇必要
用set合理多少少
最靚嘅one-liner大概應該是咁嘅樣:
class Solution:
def containsDuplicate(self, nums: List[int]) -> bool:
return len(set(nums)) != len(nums)
利申:code golf專家
class Solution:
def containsDuplicate(self, nums: List[int]) -> bool:
return len(set(nums)) != len(nums)