Question: Given an integer array nums, retum true if any value appears at least twice in the array, and return false if every element is distinct:
Given an integer array nums, retum true if any value appears at least twice in the array, and return false if every element is distinct:
Example :
Input: nums
Output: true
Example :
Input: nums
Output: false
Example :
Input: nums
Output: true
Constraints:
nums. length
nums
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