Leetcode 217 Contains Duplicate Javascript Solution

leetcode

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When encountering problem

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.

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LeetCode 217

In this video, I solve

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LeetCode 217 Contains Duplicate

Leetcode 217 Contains Duplicate

LeetCode 217

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 ...