#229Easy#50 in IBM's list· asked at 15 companies
Contains Duplicate
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What we know
Example 1
Input: nums = [1,2,3,1] Output: true
Example 2
Input: nums = [1,2,3,4] Output: false
Example 3
Input: nums = [1,1,1,3,3,4,3,2,4,2] Output: true
Constraints
- •
1 <= nums.length <= 10^5 - •
-10^9 <= nums[i] <= 10^9