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Contains Duplicate

Problem statement​

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

Constraints:

  • 1 <= nums.length <= 105
  • -109 <= nums[i] <= 109

My solution​

/**
 * @param {number[]} nums
 * @return {boolean}
 */
var containsDuplicate = function(nums) {
    const memo = new Set(nums);
    
    return memo.size !== nums.length
    
};