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EasyArrayHash TableSorting

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.

Input: nums = [1,2,3,1]
Output: true

Input: nums = [1,2,3,4]
Output: false

Input: nums = [1,2,3,1]

Output: true

Input: nums = [1,2,3,4]

Output: false

Input: nums = [1,1,1,3,3,4,3,2,4,2]

Output: true

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Case 1

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Easy

ArrayHash TableSorting

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.

Input: nums = [1,2,3,1]
Output: true

Input: nums = [1,2,3,4]
Output: false

Input: nums = [1,2,3,1]

Output: true

Input: nums = [1,2,3,4]

Output: false

Input: nums = [1,1,1,3,3,4,3,2,4,2]

Output: true