Top 20 Free Udemy Courses to Learn Data Structures and Algorithms (DSA) in 2024 — Best of Lot

My favorite free DSA Courses on Udemy for programming and coding interviews

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8 min readAug 6, 2024

Hello guys, if you are preparing for tech interview then apart from system design, you should also pay attention to data structures and algorithms. It’s one of the most important topic for any tech interview.

In the past, I have shared 100+ free courses, 25 Spring Boot Courses and 50+ Docker + K8 courses and in this article, I am going to share 25 Free Udemy courses you can join to master Data Structures and Algorithms.

Not just for interview but also In this ever-evolving world of technology, staying ahead of the curve is crucial for any aspiring or established programmers and one of the most effective ways to sharpen your coding skills and boost your career prospects is by mastering Data Structures and Algorithms (DSA).

But why exactly are these concepts so important, and how can learning them benefit you?

Well, because Data Structures + Algorithms = Computer Programs

If you know these two, then you can not only understand the program but also write better programs.

By the way, if you can spend $10 then Master the Coding Interview: Data Structures + Algorithms course by Andrei Negaoie is also a great course to join and learn about DSA for interviews. I highly recommend it to anyone who is looking for a comprehensive DSA course for coding interviews.

And, if you like Andrei’s courses then you can also join his learning platform Zero to Mastery academy where you can find more than 60 courses on in-demand technologies like web development, Python, DSA, System Design, etc from Andrei and his team.

Why Learn Data Structures and Algorithms?

Before we see these free courses from Udemy to learn DSA, let’s find why you should spend time learning data structures and algorithms.

Here are few reasons which make sense to me

1. Efficient Problem-Solving

DSA gives you tools to solve complex problems efficiently. By understanding various data structures and algorithmic techniques, you’ll be able to choose the best approach for any given problem, saving time and computational resources.

2. Improved Code Quality

A good knowledge of DSA also leads to writing cleaner, more optimized code. You’ll learn to organize data more effectively and implement algorithms that run faster and use less memory.

3. Essential for Technical Interviews

Many top tech companies use DSA questions to assess candidates including FAANG or MAANG (Meta, Apple, Amazon, Netflix, and Google). Proficiency in these areas can significantly boost your chances of landing your dream job.

4. Foundation for Advanced Concepts

DSA serves as a springboard for learning more advanced topics in computer science, such as machine learning, artificial intelligence, and big data analytics.

5. Language-Agnostic Skills

The principles of DSA are universal across programming languages. Once you grasp these concepts, you can apply them in any language or technology stack.

6. Competitive Programming

If you enjoy coding challenges or competitions, a strong foundation in DSA is indispensable for performing well and improving your ranking. You can also win cash awards there.

7. Better Understanding of Software Libraries

Many popular software libraries and frameworks are built on DSA principles. Understanding these concepts helps you use these tools more effectively and even contribute to open-source projects.

While there could be many more reasons to learn Data Structures, these are enough to convince myself to learn DSA.

Also here is a nice list of must know data structures and algorithms from Educative.io

20 Best Free Courses to Learn Data Structures and Algorithms in Depth

Without any further ado, here are free Udemy courses to learn Data Structures and Algorithms in depth.

Data Structures and Algorithms: Zero to Hero

This is one of the best free course on Udemy to learn Data structure and Algorithms. Master the fundamentals and advanced concepts of data structures and algorithms to ace your coding interviews.

2. Data Structures And Algorithms In Real World — Part 1 Explore real-world applications of data structures and algorithms, making complex concepts easy to understand. Learn more

3. Divide and Conquer: Computing Algorithm Design Strategy Dive into the divide and conquer strategy, a powerful approach to solving complex problems efficiently. Learn more

4. Complexity Theory — Running Time Analysis of Algorithms

This free course will teach you how to analyze the running time of algorithms, a crucial skill for optimizing code performance.

5. Python String Coding Interview Questions In Simple Way

This free DSA course from Udemy will prepare you for string-based coding interview questions in Python with clear explanations and examples. Learn more

6. Data Structures & Algorithms in Python — Coding Interview

You can join this free Udemy course to Ace your Python coding interviews by mastering data structures and algorithms with practical examples. Learn more

6. Mastering Coding Interviews & Competitions

This free course can be used to boost your coding interview and competition skills with comprehensive practice and expert tips. Learn more

Coding Interview Questions on Binary Tree Prepare for binary tree-related coding interview questions with thorough explanations and practice problems. Learn more
Data Structure — Part I (FREE Course) Design, implement, and analyze basic data structures using Java in this free, beginner-friendly course. Learn more

Data Structures Concepts & Singly Linked List Implementation (FREE Course) Get a solid understanding of data structures and learn to implement singly linked lists.

Data Structure — Part 2 — A #FREE Course Advance your knowledge of data structures with detailed implementation analysis in this free course. Learn more
Dynamic Programming Lay a strong foundation in algorithms and decode coding interviews with dynamic programming techniques. Learn more
Introduction to Algorithms and Data structures in C++ — A #FREE Course Master algorithms and data structures in C++ with this comprehensive and free course. Learn more

Data Structures and Algorithms — High Level MADE EASY Simplify complex data structures and algorithms concepts with this easy-to-understand course. Learn more
Data Structures in Java for Beginners (FREE Course) Learn the basics of data structures in Java with this beginner-friendly and free course. Learn more
Data Structures and Algorithms | Coding Interview Q&A Get ready for your coding interviews with in-depth Q&A sessions on data structures and algorithms. Learn more
Data structures (Level 1) Build a solid foundation in data structures with this introductory course. Learn more
Data Structures and Algorithms in Java Master data structures and algorithms in Java to enhance your coding skills. Learn more
Coding Interview Jumpstart: Algorithms and Problem Solving — A #FREE Course Kickstart your coding interview preparation with this free course on algorithms and problem-solving. Learn more

Introduction to Algorithms in JavaScript Learn algorithms in JavaScript to improve your programming skills and prepare for interviews. Learn more
Data Structures in C++ — A #FREE Course Enhance your understanding of data structures in C++ with this comprehensive and free course. Learn more

Learning Data Structures & Algorithms in Python from Scratch Start from scratch and master data structures and algorithms in Python. Learn more
Python Data Structures A to Z Explore data structures in Python from A to Z to become a proficient programmer. Learn more
Linked lists for absolute beginners Learn to juggle with pointers and nodes like any other data structure in this beginner-friendly course. Learn more

Conclusion

That’s all in this list of free Udemy courses to learn Data Structures and Algorithms. You can join one or more courses from this list to improve your Data structures and algorithms skills.

Investing time in learning Data Structures and Algorithms is one of the most rewarding decisions you can make as a programmer. It not only enhances your problem-solving skills but also opens doors to exciting career opportunities.

Whether you’re a beginner looking to build a strong foundation or an experienced developer aiming to refine your skills, there’s always something new to learn in the world of DSA.

Remember, consistency is key — start with the basics, practice regularly, and gradually tackle more complex topics. Your future self will thank you for the effort you put in today.

Also, I suggest you to join these free courses while they are free, as based upon my experience many instructor initially put their courses for free to collect students, ratings and reviews and then make them paid but once you joined the course while its free, it will always remember free.

Further Learning

Happy Learning! 🚀