JavaScript Set Coding Practice Problems
Last Updated :
25 Feb, 2025
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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 Problems
Easy
- Union of Arrays with Duplicates
- Intersection of Arrays with Distinct
- Distinct absolute array elements
- Check for Disjoint
- Array Subset
- Find Missing Number in an Array
- Find Pair Given Difference
- Jay's Apples
- Sum the common elements
- Unique rows in boolean matrix
- Pair Sum Existence
- Find the First Non-Repeating Character in a String
- Longest Consecutive Subsequence
- Find all pairs with a given sum
- Find the Longest Subarray with Equal Number of 0s and 1s
- Smallest Subset with Greater Sum
Medium
- Duplicate within K Distance in an Array
- Two Sum Problem
- Permutations of a String
- Group Anagrams Together
- Smaller on Left
- Maximum Product of Increasing Subsequence of Size 3
- Count Distinct Elements in Every Window of Size K
- Smallest window containing all characters of another string
Hard
- Find the Longest Subarray with Sum Divisible by K
- Find Only Repetitive Element from 1 to n-1
- First Repeating Element
- Length of the longest substring
- Longest Substring with K Uniques
- Longest Consecutive Subsequence
- Find the Intersection of Two Arrays
- Find the Union of Two Arrays
- Find Pair Given Difference
- Check for Disjoint