Remove Duplicates from Array

JavaScript

Technical Specification

Given an array, return a new array with all duplicate values removed.

Input/Output Samples

Input:[1, 1, 2, 3, 3]

Output:[1, 2, 3]

Input:["a", "b", "a"]

Output:["a", "b"]

Optimal Logic Path

function removeDuplicates(arr) {
  return [...new Set(arr)];
}

Architectural Deep-Dive

A Set automatically discards duplicates. Converting the Set back to an array gives us only unique values.