목차

Contains Duplicate

ps
링크leetcode.com/…
출처LeetCode
문제 번호217
문제명Contains Duplicate
레벨Easy
분류

기초

시간복잡도O(n)
인풋사이즈n<=10^5
사용한 언어python 3.14
제출기록16ms / 31.2MB
최고기록0ms
해결날짜2026/04/24

풀이

코드

problems/leetcode/q0217.py
"""Solution code for "LeetCode 217. Contains Duplicate".

- Problem link: https://leetcode.com/problems/contains-duplicate/
- Solution link: http://www.teferi.net/ps/problems/leetcode/217
"""

from typing import List


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