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EasyData Structures

Description

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

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

- 1 <= nums.length <= 10^5 - -10^9 <= nums[i] <= 10^9

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