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#2 in Data Structures and AlgorithmsUdemyBestseller on UdemyData Structures and AlgorithmsPaid courseAll LevelsCertificate

Master the Coding Interview: Data Structures + Algorithms (Udemy.com)

Ultimate coding interview bootcamp. Get more job offers, negotiate a raise: Everything you need to get the job you want!

Created by: Andrei Neagoie

Last updated March 2026

Our take

Based on the ratings of 40,843 students, a sample of their written reviews and the syllabus, as the course stood in March 2026. No course pays to be reviewed.

This is a coding interview prep course first and a data structures course second. Andrei Neagoie spends about 20 hours across 267 lectures walking through Big O, arrays, hash tables, linked lists, trees, graphs, recursion, sorting and dynamic programming, then adds sections on getting interviews, non-technical interviews and salary negotiation. The code is written in JavaScript, with GitHub translations into a dozen other languages. Around 270,000 students have enrolled, and it carries a 4.6 rating from roughly 41,000 reviews. It suits self-taught developers who never studied computer science and want the whole interview picture in one place.

Reviewers praise how plainly the instructor explains things. One says it made everything feel less intimidating, and the student community and resources get real credit, though another dislikes that the community lives on Discord. The complaints are consistent, though. The biggest is language: JavaScript learners are happy, but several others say the data structure sections are mostly about implementing them in JavaScript rather than when to use them. Mid-level and senior developers call it shallow, one says the later topics feel rushed, and dynamic programming gets only 39 minutes. One late 2025 reviewer flags errors in the recursion section, and a June 2026 review reports broken links to the coding challenges. One reviewer also objects to exercises that require a repl.it account.

The syllabus was last updated in March 2026, so the material isn't stale. Compared with Colt Steele's JavaScript Algorithms and Data Structures Masterclass, which sits nearby in this category, reviewers say Colt goes deeper on algorithms while this one adds the job-hunting layer. Java or C++ candidates would be better served by the language-specific courses alongside it. For a JavaScript developer facing a first round of technical interviews, it's a solid, friendly starting point. Expect to do plenty of practice problems elsewhere.

Best forSelf-taught JavaScript developers who want interview strategy and computer science basics in one course.
Skip it ifYou code in Python, Java or C++, or you're a mid-level developer wanting real depth on advanced structures.

Pros

  • Explanations are plain and unintimidating; reviewers call the course easy to follow and digestible.
  • Covers the whole job hunt: getting interviews, non-technical interviews, offers and negotiation.
  • Student community and resource pack that one reviewer calls absolutely insane.
  • Refreshed in March 2026, with code samples on GitHub in 13 languages.

Cons

  • Taught in JavaScript; non-JS students say the implementation walkthroughs don't transfer well.
  • Shallow for experienced developers, and dynamic programming gets only 39 minutes.
  • One recent review reports broken challenge links; another dislikes exercises that require a repl.it account.
Andrei is very good at explaining and expressing his thoughts, and he makes everything very digestible for someone who isn't an "expert".
Sean Rexford, a student

Listed as all levels, but it really suits beginners and juniors who already know one language; seniors will find little new.

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What you will learn

  • Ace coding interviews given by some of the top tech companies
  • Become more confident and prepared for your next coding interview
  • Learn, implement, and use different Data Structures
  • Learn, implement and use different Algorithms
  • Get more interviews
  • Professionally handle offers and negotiate raises
  • Become a better developer by mastering computer science fundamentals
  • Github code provided in: JavaScript, Python, Java, C/C++, C#, Golang, Swift, Kotlin, TypeScript, Scala, Rust, Perl, PHP

Course content

22 sections · 267 lectures · 20 hours of video 2 quizzes, 1 coding exercise, 56 articles

  1. 1Introduction 1 free preview5 lectures · 16 min
  2. 2Getting More Interviews21 lectures · 1.7 hours
  3. 3Big O 5 free previews28 lectures · 1.9 hours
  4. 4How To Solve Coding Problems 1 free preview9 lectures · 1.1 hours
  5. 5Data Structures: Introduction5 lectures · 27 min
  6. 6Data Structures: Arrays12 lectures · 1.6 hours
  7. 7Data Structures: Hash Tables13 lectures · 1.3 hours
  8. 8Data Structures: Linked Lists21 lectures · 1.6 hours
  9. 9Data Structures: Stacks + Queues15 lectures · 1.2 hours
  10. 10Data Structures: Trees18 lectures · 1.3 hours

Who it is for

The instructor says it suits

  • Any engineer, developer, programmer, who wants to improve their interviewing skills
  • Anyone interested in improving their whiteboard coding skills
  • Anyone who wants to become a better developer
  • Any self taught programmer who missed out on a computer science degree

What you need before you start

  • No experience with data structures or algorithms needed
  • Basic understanding of one programming language
  • No previous computer science knowledge necessary

How it compares

Against the other 86 rated Udemy courses in Data Structures and Algorithms on CourseDuck:

  • Rating4.6 out of 5higher than 66% of them
  • Reviews40,843#1 of 87 by number of reviews
  • Length20.1 hourslonger than 74% of them
  • Last updatedMarch 2026more recently than 90% of them

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Course Description

Updated for the 2023 hiring season! Join a live online community of over 900,000+ developers and a course taught by an industry expert that has actually worked both in Silicon Valley and Toronto as a senior developer. Graduates of this course are now working at Google, Tesla, Amazon, Apple, IBM, JP Morgan, Meta + other top tech companies.

Want to land a job at a great tech company like Google, Microsoft, Meta, Netflix, Amazon, or other companies but you are intimidated by the interview process and the coding questions? Do you find yourself feeling like you get "stuck" every time you get asked a coding question? This course is your answer. Using the strategies, lessons, and exercises in this course, you will learn how to land offers from all sorts of companies.

Many developers who are "self taught", feel that one of the main disadvantages they face compared to college educated graduates in computer science is the fact that they don't have knowledge about algorithms, data structures and the notorious Big-O Notation. Get on the same level as someone with computer science degree by learning the fundamental building blocks of computer science which will give you a big boost during interviews. You will also get access to our private online chat community with thousands of developers online to help you get through the course.

Here is what you will learn in this course:

Technical:

1. Big O notation

2. Data structures:

* Arrays
* Hash Tables
* Singly Linked Lists
* Doubly Linked Lists
* Queues
* Stacks
* Trees (BST, AVL Trees, Red Black Trees, Binary Heaps)
* Tries
* Graphs

3. Algorithms:

* Recursion
* Sorting
* Searching
* Tree Traversal
* Breadth First Search
* Depth First Search
* Dynamic Programming

Non Technical:

- How to get more interviews
- What to do during interviews
- What do do after the interview
- How to answer interview questions
- How to handle offers
- How to negotiate your salary
- How to get a raise

Unlike most instructors, I am not a marketer or a salesperson. I am a senior developer and programmer who has worked and managed teams of engineers and have been in these interviews both as an interviewee as well as the interviewer.

My job as an instructor will be successful if I am able to help you become better at interviewing and land more jobs. This one skill can really change the course of your career and I hope you sign up today to see what it can do for your career!


Taught by:

Andrei is the instructor of the highest rated Web Development course on Udemy as well as one of the fastest growing. His graduates have moved on to work for some of the biggest tech companies around the world like Apple, Google, JP Morgan, IBM, etc... He has been working as a senior software developer in Silicon Valley and Toronto for many years, and is now taking all that he has learned, to teach programming skills and to help you discover the amazing career opportunities that being a developer allows in life. 

Having been a self taught programmer, he understands that there is an overwhelming number of online courses, tutorials and books that are overly verbose and inadequate at teaching proper skills. Most people feel paralyzed and don't know where to start when learning a complex subject matter, or even worse, most people don't have $20,000 to spend on a coding bootcamp. Programming skills should be affordable and open to all. An education material should teach real life skills that are current and they should not waste a student's valuable time.   Having learned important lessons from working for Fortune 500 companies, tech startups, to even founding his own business, he is now dedicating 100% of his time to teaching others valuable software development skills in order to take control of their life and work in an exciting industry with infinite possibilities. 

Andrei promises you that there are no other courses out there as comprehensive and as well explained. He believes that in order to learn anything of value, you need to start with the foundation and develop the roots of the tree. Only from there will you be able to learn concepts and specific skills(leaves) that connect to the foundation. Learning becomes exponential when structured in this way. 

Taking his experience in educational psychology and coding, Andrei's courses will take you on an understanding of complex subjects that you never thought would be possible.  

See you inside the courses!


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Instructor Details

Andrei Neagoie

Andrei is the instructor of some of the highest rated programming and technical courses online. He no longer teaches on Udemy. Instead, he is now the founder of ZTM Academy which is one of the fastest growing education platforms in the world

ZTM Academy is known for having some of the best instructors and success rates for students. 


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Reviews

4.6

40,843 ratings on Udemy

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

By Jason Fujii on 7/21/2026

I've only taken this course for about 45 minutes now, but I'm shocked at the level of depth in the intro alone. The community that was created and the resources given to students is absolutely insane!

By Mikhail Lapshin on 7/13/2026

Thank you, Andrei, for the great course. You've done a good job! For readers who are still on the fence about what to choose between the two most popular courses — choose both. Andrei's course covers interview questions on top of data structures and algorithms. Colt's course dives deeper into the algorithms. It's worth spending time twice on the same topics to get all the best parts from both courses.

By nandala abhinav on 6/21/2026

This is a good course that teaches me DSA without over complicating things and also teaches us the mindset that a developer should have going forward in Carrer and the carrer options to pursue. It taught me how to confidently handle any interview

By Sean Rexford on 6/8/2026

I'd been recommended this course by friends as I started my coding journey. Andrei is very good at explaining and expressing his thoughts, and he makes everything very digestible for someone who isn't an "expert". It made a lot of things feel less intimidating, and now its time to just start doing it.

By Miguel Villalobos on 5/6/2026

I think this course delivers on what it promises. You get good robust knowledge in Data Structures, Algorithms, Problem Solving and how to get more interviews, prepare for them and succeed. Certainly a great course I would recommend for anyone looking for opportunities in Software Engineering. Keep in mind that you will have to practice a lot of the concepts by yourself (that is the only real way to fully learn them), although the course offers a great deal on where and how to start practicing.

By Julia Doe on 3/19/2026

I do not have a CS background (studied mathematics), so I used this course to get a good understanding of DS&A (together with many Leetcode exercises), and shortly after managed to get an offer as SWE at Google :) Thanks a lot!

By Travis Russell Ysquierdo-Kath on 3/19/2026

This was incredibly helpful, thank you. very good basic understanding and building/reshaping the foundations with clear concise examples. The Enthusiasm was also through the charts which helps to make things a little less painful.

By Janusz Snieg on 1/29/2026

He's good, explains concepts really well but I can't help but find some of his techniques or lectures boring. It's not, not completely for me. Take that as you will. Try him out for yourself. Update: Just finished Trees. I got to say, he is very, very good like I'm surprised. I never knew I would be able to understand data structures so well. His analogies and way of explaining just embeds in your memory but of course, common practice also helps you lots. Update 2: This is the last update I will give (probably). I'm doing algorithms now, passed recursion and sorting. Quick Sort was actually easier for me to understand than Merge Sort and for all my Python people out there your implementation most likely is O(k log n) only due to how slicing works in Python. But, my last gripe is that the subtitles are a mismatch from time to time. Besides all of that, this is probably the best course I found so far on DSA and I've studied CS too. I just wish I wouldn't underestimate the difficulty of these interviews and let my ego/pride aside.

By Antonio Nikolov on 12/18/2025

I'm sorry, but this course is not for everyone. If you are mid or senior developer you will learn nothing new here. I bought this course (which I regret) to refresh my knowledge of data structures and deep dive into more complicated ones, but it really doesn't go that deep. And choosing a language like Javascript for course for data structures is just... Please update the description to say this is a beginner - junior developer at best compatible...

By Cynthia Muyunda on 12/3/2025

Andrei explains the algorithms clearly. I am now starting to understand why understanding how algorithms work is useful when making programmatic decisions on what functions to use when creating a product. Time and space complexity matter depending on your product goals..

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Overall Score : 92 / 100