https://leetcode.com/explore/interview/card/top-interview-questions-easy/92/array/578/
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/**
* @param {number[]} nums
* @return {boolean}
*/
var containsDuplicate = function (nums) {
const set = new Set(nums);
return set.size != nums.length;
};GitHub : https://github.com/developeSHG/Algorithm-LeetCode/tree/main/contains-duplicate
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