< Back 217. Contains Duplicate Really easy question - are there duplicates in this list of integers? The solution is as follows: class Solution: def containsDuplicate(self, nums: List[int]) -> bool: return len(set(nums)) < len(nums) _ Time Complexity: O(n) - We create a set from a list of integers. _ Space Complexity: O(n) - We create a set from a list of integers.