dsa · easy
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.
Arguments
nums— the input array of integers
## Example `` Input: nums = [1,2,3,1] Output: true ` **Example 2:** ` Input: nums = [1,2,3,4] Output: false ``
Constraints
1 <= nums.length <= 10^5 Hidden tests include near-max size for this bound; a slower-than-intended solution TLEs.
Examples
Example 1
Input: [1,2,3,1] Expected: true
Example 2
Input: [1,2,3,4] Expected: false