217. Contains Duplicate
Given an integer array nums, return true if any value appears at least twice in the array, and return false if every element is distinct.
Example 1:
Input: nums = [1,2,3,1]
Output: true
Explanation:
The element 1 occurs at the indices 0 and 3.
Example 2:
Input: nums = [1,2,3,4]
Output: false
Explanation:
All elements are distinct.
Example 3:
Input: nums = [1,1,1,3,3,4,3,2,4,2]
Output: true
Constraints:
1 <= nums.length <= 105-109 <= nums[i] <= 109
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1class Solution:
2 def containsDuplicate(self, nums: List[int]) -> bool:
3
Starter codePython 3Spaces: 4
Loading editor…
1class Solution:
2 def containsDuplicate(self, nums: List[int]) -> bool:
3
Starter codePython 3Spaces: 4
Examples
Input
[1,2,3,1]
Input
[1,2,3,4]
Input
[1,1,1,3,3,4,3,2,4,2]
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