LeetCode 217 | Contains Duplicate #100daysofcode am#leetcodechallenge #javaprogramming

A HashSet in Java is a collection that stores unique elements. It implements the Set interface, which means it does not allow duplicate elements.

[AKS-tnjv]

in javascript:

const isDuplicate = (arr) => {
const setArr = new Set(arr);
return setArr.size !== arr.length;
}