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Data Structures and Algorithms in JavaScript: DSA Course (Udemy.com)

Master JavaScript DSA for LEETCODE & Coding Interviews | 50-Day Learning Path with Hands-on Exercises

Created by: Jackson Kailath

Last updated December 2025

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What you will learn

  • Master DSA in JavaScript including Arrays, LinkedLists, Trees, Graphs
  • Solve DSA with JavaScript for coding interviews and LEETCODE
  • Build JavaScript data structures from scratch
  • Real coding interview problems using JS DSA
  • Real Coding Interview Questions from Google, Meta,Amazon,Netflix ,Microsoft etc.
  • Boost your Problem solving skills

How it compares

Against the other 503 rated Udemy courses in Teaching & Academics on CourseDuck:

  • Rating4.6 out of 5higher than 58% of them
  • Reviews668#193 of 504 by number of reviews
  • Length68 hourslonger than 98% of them
  • Last updatedDecember 2025more recently than 79% of them

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Course Description

Looking for the best DSA JavaScript course? Master data structures and algorithms in JavaScript with this comprehensive JavaScript DSA course designed for LEETCODE and technical interviews. Learn DSA with JavaScript through 117 coding challenges across 50 structured days. Perfect for mastering DSA in JS and acing your next coding interview.

Student Testimonials:

  • "Basically I'm a beginner to javascript but after listening the way of his teaching , i have no word for him he's fabulous person . and I recommend all to watch his course." - Mohd. Amir

  • "Excellent explanations and application of theory directly to practice!" - GUILLERMO GABRIEL KELLY SCHMIDT

  • "Explanations and demonstrations are on point and it makes grasping easier.." - Emmanuel Apea

  • "Excellent Teaching" - Sarhan Sayyed Rasool Shaikh

  • "Excellent course. The teacher has mastery of what he explains and the content is of great value."-Vyctor Vieira Guimarães

  • "It's an amazing course the instructor is super amazing and the way of teaching it is super awesome clarify everything very well and the roadmap for learning DSA is superb. Go with this guy without a second thought you will love it for sure..." - Shashank Jaiswal

  • "Excellent, way of teaching" - Gauri Shankar Jangid

About the Course:

Welcome to the Data Structures and Algorithms Coding Interview Bootcamp with Javascript!

The primary goal of this course is to prepare you for coding interviews at top tech companies. By tackling one problem at a time and understanding its solution, you'll accumulate a variety of tools and techniques for conquering any coding interview.

Daily Data Structures and Algorithms Coding Challenges:

The course is structured around daily coding challenges. Consistent practice will equip you with the skills required to ace coding interviews. For the next 50 days commit to yourself to practice atleast 2 coding interview questions everyday. You don't need any setup for this as the daily coding problem challenges can be solved in the coding environment provided by Udemy. The course will automatically track your progress and you just need to spend your time making actual progress everyday.

Topics Covered:

We start from the basics with Big O analysis, then move on to very important algorithmic techniques such as Recursion, Backtracking and Dynamic Programming Patters. After this we move to cover common data structures, and discuss real problems asked in interviews at tech giants such as Google, Meta, Amazon, Netflix, Apple, and Microsoft.

For each question, we will:

  1. Discuss the optimal approach

  2. Explain time and space complexity

  3. Code the solution in Javascript (you can follow along in your preferred language)

Additional Resources :

The course includes downloadable resources, motivational trackers, and cheat sheets.

Course Outline:


  • Day 1: Arrays, Big O, Sorted Squared Array, Monotonic Array

  • Day 2:Recursion,k-th symbol in Grammar,Josephus problem

  • Day 3:Recursion, Tower of Hanoi, Power Sum

  • Day 4:Backtracking, Permutations, Permutations 2

  • Day 5:Backtracking, Subsets, Subsets 2

  • Day 6:Backtracking, Combinations, Combinations Sum 1

  • Day 7:Backtracking,Combinations Sum 2,Combinations Sum 3

  • Day 8:Backtracking,Sudoku Solver, N Queens

  • Day 9:Dynamic Programming, Fibonacci, Climbing Stairs

  • Day 10:Dynamic Programming, Min Cost Climbing Stairs, Tribonacci

  • Day 11:Dynamic Programming, 01 Knapsack, Unbounded Knapsack

  • Day 12:Dynamic Programming, Target Sum, Partition Equal Subset Sum

  • Day 13:Dynamic Programming, LCS, Edit Distance

  • Day 14:Dynamic Programming, LIS, Max Length of Pair Chain, Russian Doll Envelopes

  • Day 15:Dynamic Programming, Palindromic Substrings, Longest Palindromic Substring, Longest Palindromic Subsequence

  • Day 16:Dynamic Programming, Palindrome Partitioning, Palindrome Partitioning 2

  • Day 17:Dynamic Programming, Word Break, Matrix Chain Multiplication

  • Day 18:Dynamic Programming, Kadane's algorithm - Max Subarray, Maximum Product Subarray

  • Day 19:Greedy Algorithms - Fractional Knpasack, Non overlapping Intervals

  • Day 20:Greedy Algorithms - Jump Game 1, Minimum # of arrows to burst baloons

  • Day 21:Greedy Algorithms - Two City Scheduling, Boats to Save people

  • Day 22:Greedy Algorithms - Task Scheduler, Largest Number

  • Day 23:Greedy Algorithms - Gas Stations,  Jump Game 2

  • Day 24: Arrays, Rotate Array, Container with Most Water

  • Day 25: Hash Tables, Two Sum, Isomorphic Strings

  • Day 26: Strings, Non-Repeating Character, Palindrome

  • Day 27: Strings, Longest Unique Substring, Group Anagrams

  • Day 28: Searching, Binary Search, Search in Rotated Sorted Array

  • Day 29: Searching, Find First and Last Position, Search in 2D Array

  • Day 30: Sorting, Bubble Sort, Insertion Sort

  • Day 31: Sorting, Selection Sort, Merge Sort

  • Day 32: Sorting, Quick Sort, Radix Sort

  • Day 33: Singly Linked Lists, Construct SLL, Delete Duplicates

  • Day 34: Singly Linked Lists, Reverse SLL, Cycle Detection

  • Day 35: Singly Linked Lists, Find Duplicate, Add 2 Numbers

  • Day 36: Doubly Linked Lists, DLL Remove Insert, DLL Remove All

  • Day 37: Stacks, Construct Stack, Reverse Polish Notation

  • Day 38: Queues, Construct Queue, Implement Queue with Stack

  • Day 39: Binary Trees, Construct BST, Traversal Techniques

  • Day 40: Pre order and In order Traversal of Binary Tree - Iterative

  • Day 41: Post Order Traversal Iterative, Path Sum 2

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Instructor Details

Jackson Kailath

Jackson is an Enterpreuner who loves to teach students and enjoys simplifying complex concepts to explain them in an easy to learn manner.  He has completed his Engineering and also done MBA from the Indian School of Business. He believes that a good teacher is one who can teach a subject in a structured manner so that students can form a mind map for the topic at hand automatically.

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Reviews

4.6

668 ratings on Udemy

Select a bar to show only those reviews.Select the bar again to show every rating.

By Brian Barker on 5/2/2025

I would not recommend this course its hard to follow and his explanantions leave you wondering. I have seen better classes on youtube for free. In the beginning of the video he talks about his drawing help explain the problem but they can't be read and explain nothing.

By sudhanshu Mishra on 2/12/2025

This DSA Udemy course is a game-changer for anyone aiming to crack any tech company interview. Each concept is explained in an easily understandable and memorable. The teaching style is simply awesome, making complex topics accessible and engaging.

By Sajeel Ahsan on 1/8/2025

This course provides a comprehensive, in-depth understanding of Data Structures and Algorithms, with a strong focus on Big O notation and the concepts of Time and Space Complexity. By completing this course, I am confident in my ability to solve coding problems effectively while optimizing for both time and space complexity.

By Mejbaul Mubin on 12/31/2024

I recently enrolled the "50 Days of DSA JavaScript Data Structures Algorithms LEETCODE" course, and I'm impressed with how comprehensive and well-structured it is. The course covers a wide range of topics, from the fundamentals of data structures and algorithms to advanced concepts like dynamic programming and graph algorithms. The course also provides ample opportunities to practice solving coding problems on LeetCode, which is a great way to solidify your understanding of the material. I would highly recommend this course to anyone looking to improve their understanding of data structures and algorithms. It's a challenging but rewarding experience that will help you become a better programmer.

By Tracy Chacon on 12/9/2024

Overall I'm satisfied with the course and I would recommend this course to others. I'll also be on the lookout for other courses this instructor has on udemy. The content well-organized, easy to understand, and the topics are broken down really well. The explanation of data structures and algorithms are clear and come with illustrations coding walkthroughs on different methods for solving each problem. There is instruction, lecture, a chance to code the solution yourself, and walkthrough of the material given. Good understanding of DSA and you get oppurnity see the thought process to solving these problems that are specific to the data types and algorithms.

By Vatshal on 9/14/2024

Instructor is experienced person. His teaching style is very comphrensive and easily understandable. Also, he guiding us how to approach any questions or any difficult questions which we could encounter in our coding interviews.

By Shashank Jaiswal on 7/27/2024

It's an amazing course the instructor is super amazing and the way of teaching it is super awesome clarify everything very well and the roadmap for learning DSA is superb. Go with this guy without a second thought you will love it for sure...

By Alphonsa Louis on 6/7/2024

I recently enrolled in this DSA interview preparation course using JavaScript, and it exceeded my expectations! The course is well-structured, starting from basic concepts and progressively covering advanced topics. The instructor explains complex algorithms and data structures clearly, with practical coding examples and engaging explanations. The hands-on exercises and coding challenges are particularly helpful in solidifying my understanding. This course is a fantastic resource for anyone preparing for technical interviews, and I highly recommend it to fellow developers looking to strengthen their problem-solving skills in JavaScript.

By Anju George on 5/31/2024

I am a beginner in data and algorithms. But the instructor has started from the basics with whuch made it easy for me to follow. Simple and interesting examples make it all the more engaging...

By Hema James on 5/31/2024

Jackson's courses are well structured and succinctly explained and is a hands on guide for learning and development. Highly recommend for those who wish to enhance their skill sets and knowledge.

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Overall Score : 92 / 100