JavaScript Set Coding Practice Problems Last Updated : 25 Feb, 2025 Comments Improve Suggest changes Like Article Like Report Sets are an important data structure in JavaScript that store unique values of any type, whether primitive or object references. A Set is useful for scenarios where you want to eliminate duplicate values or check for membership efficiently. Sets are unordered collections, meaning the elements are not indexed and do not have any order. This curated list of JavaScript Set Coding Practice Problems will help you master set operations. Whether you're a beginner or an experienced developer, these problems will enhance your set manipulation skills and problem-solving abilities.Set Practice ProblemsEasyUnion of Arrays with DuplicatesIntersection of Arrays with DistinctDistinct absolute array elementsCheck for DisjointArray SubsetFind Missing Number in an ArrayFind Pair Given DifferenceJay's ApplesSum the common elementsUnique rows in boolean matrixPair Sum ExistenceFind the First Non-Repeating Character in a StringLongest Consecutive SubsequenceFind all pairs with a given sumFind the Longest Subarray with Equal Number of 0s and 1sSmallest Subset with Greater SumMediumDuplicate within K Distance in an ArrayTwo Sum ProblemPermutations of a StringGroup Anagrams TogetherSmaller on LeftMaximum Product of Increasing Subsequence of Size 3Count Distinct Elements in Every Window of Size KSmallest window containing all characters of another stringHardFind the Longest Subarray with Sum Divisible by KFind Only Repetitive Element from 1 to n-1First Repeating ElementLength of the longest substringLongest Substring with K UniquesLongest Consecutive SubsequenceFind the Intersection of Two ArraysFind the Union of Two ArraysFind Pair Given DifferenceCheck for Disjoint Comment More infoAdvertise with us Next Article JavaScript Set Coding Practice Problems S souravsharma098 Follow Improve Article Tags : JavaScript Web Technologies JavaScript-DSA JavaScript-Quiz Similar Reads JavaScript set Interview Questions A Set in JavaScript is a collection of unique values that maintains insertion order and removes duplicates automatically. It supports efficient operations like adding, deleting, and checking values, making it ideal for tasks involving uniqueness or deduplication. Unlike arrays, Set does not allow du 3 min read JavaScript Set Reference JavaScript Set is a collection of items that are unique, meaning no element can be repeated. Elements of the set can be iterated in the insertion order. A Set can store any type of value, whether primitive or objects.Syntaxnew Set()Example: This example will show the use of Set() constructor.JavaScr 3 min read JavaScript Set has() Method The Set.has() method in JavaScript is used to check whether an element with a specified value exists in a Set or not. It returns a boolean value indicating the presence or absence of an element with a specified value in a Set.Syntax:mySet.has(value);Parameters:value: It is the value of the element t 2 min read JavaScript Set() Constructor The Javascript Set constructor is used to create Set objects. It will create a set of unique values of any type, whether primitive values or object preferences. It returns the new Set object. It mainly helps in creating a new set of objects which contains unique elements.Syntax:new Set()new Set(iter 2 min read JavaScript Set Programming Examples In JavaScript, the Set is a built-in collection that allows you to store unique values of any type, Set can store any type of value whether primitive or objects. It provides methods for adding, removing, and querying elements in an efficient way.JavaScriptlet s = new Set(["a", "b", "c"]); console.lo 1 min read Like