Hello guys, In the past, I have shared a lot of useful resources like books and tutorials to learn Data Structure and Algorithms for both beginners and experienced programmers. I have also shared a lot of Data Structure and Algorithmic interview questions like this and their solutions in Java. Still, I have got continuously queries about excellent online courses to learn Data Structure and Algorithms in Java. Even though the topics are completely independent with the programming language, Java developer definitely likes the online courses which teach Data Structure and Algorithms in Java, and that's why my recent post about best algorithms courses, which includes algorithms courses from JavaScript and Python didn't impress my readers.
Some of them also requested free algorithms courses instead of paid ones while others are happy with the excellent course regardless of whether it's free or paid. To fulfill my promise, I did some more research and bring with me a new list of Data Structure and Algorithms courses in Java, which contains both free and paid courses.
Some of the courses like Deep Dive into Java are common from my previous list, obviously because it is one of the best paths to learn algorithms and data structure in Java. But, the list also contains some new courses like the Data Structures and Algorithms Bootcamp from Udemy.
This time, I have focused more on finding courses which teaches essential data structure in a fun and exciting way, rather than picking the courses which cover a large number of data structure and algorithms but didn't do justice with that.
Another reason I have included more than a few courses is that not everybody connects to the instructor I like. Everybody is different, and they should only join the course where they can connect to the instructor, I mean they like the voice, the style of explanation, and the content itself.
If you join a course where the instructor is both knowledgeable and enthusiastic and also has excellent teaching skills, you obviously learn more and retain that knowledge for a long time. That's the goal of this article to come up with online training courses and certifications, which provide value for both your time and money.
It also covers Big O notation, which is quite important to explain to you a solution during a coding interview. This is a paid course but doesn't worry about the price of $200, you can get it very cheap on various Udemy sales at just $10, almost 90% saving.
Most of the data structure and algorithm questions are followed by calculating their time and space complexity, hence mastering BigO is really important for any Software developer and you can use this course to learn how to calculate that.
Some of them also requested free algorithms courses instead of paid ones while others are happy with the excellent course regardless of whether it's free or paid. To fulfill my promise, I did some more research and bring with me a new list of Data Structure and Algorithms courses in Java, which contains both free and paid courses.
Some of the courses like Deep Dive into Java are common from my previous list, obviously because it is one of the best paths to learn algorithms and data structure in Java. But, the list also contains some new courses like the Data Structures and Algorithms Bootcamp from Udemy.
This time, I have focused more on finding courses which teaches essential data structure in a fun and exciting way, rather than picking the courses which cover a large number of data structure and algorithms but didn't do justice with that.
Another reason I have included more than a few courses is that not everybody connects to the instructor I like. Everybody is different, and they should only join the course where they can connect to the instructor, I mean they like the voice, the style of explanation, and the content itself.
If you join a course where the instructor is both knowledgeable and enthusiastic and also has excellent teaching skills, you obviously learn more and retain that knowledge for a long time. That's the goal of this article to come up with online training courses and certifications, which provide value for both your time and money.
10 Best Data Structure and Algorithms Courses, Classes, and Tutorials in 2025
Without wasting any more of your time, here is my list of some of the best online training courses to learn Data Structure and Algorithms for Java Programmers. I have taken care to choose the course where examples are given in Java, except the last one, which is a book with Python examples, Sorry I couldn't resist telling you guys about the Grokking Algorithm book, which I admire a lot.1. Data Structures and Algorithms: Deep Dive Using Java [Best Udemy Course]
This is my go-to course for any Java programmer who wants to learn data structure and algorithms. This is a comprehensive course, and it not only covers basic data structures like an array, linked list, binary search tree, stack, queue, hash table, but also advanced data structures like heap and algorithms like counting sort, radix sort, and other constant time sorting algorithms.It also covers Big O notation, which is quite important to explain to you a solution during a coding interview. This is a paid course but doesn't worry about the price of $200, you can get it very cheap on various Udemy sales at just $10, almost 90% saving.
Most of the data structure and algorithm questions are followed by calculating their time and space complexity, hence mastering BigO is really important for any Software developer and you can use this course to learn how to calculate that.
2. Object-Oriented Java Programming: Data Structures and Beyond Specialization [Coursera]
This is one of the best course specializations on Data Structure and Algorithms for Java Programmers. As you know, a Coursera specialization is a combination of related courses to build skills and also provides a certificate once you complete all courses and do the required project.There are 5 Courses in this specialization that will teach you data structure and how to master your software engineering interviews.
Here is the list of courses included in this specialization:
1. Object-Oriented Programming in Java
2. Data Structure and Performance
3. Advanced-Data Structures in Java
4. Mastering the Software Engineering Interview
5. Capstone: Analyzing (Social) Network Data
If you want to learn Data Structure and Algorithms in Java and want to prepare for interviews, this could be a valuable resource for you.
And, if you find Coursera courses useful, then I also suggest you join Coursera Plus, a subscription plan from Coursera which gives you unlimited access to their most popular courses, specialization, professional certificate, and guided projects for just $300.
3. Graph Theory Algorithms [Udemy Online Course]
This is another fantastic course on Algorithms by William Fiset, the instructor of the previous class. This course complements his last course because it covers advanced Data Structure like Graph, which is often ignored by programmers.If you know, the graph can represent anything related to each other like cities connected with roads, routers connected with cables, and even Facebook users connected with friends.
The course covers essential Graph algorithms like Breadth-first search algorithms, depth-first search algorithms, Dijkstra's algorithms, the shortest/longest path on an acyclic graph, Travelling salesman Problems (TSP), and many more.
The goal of this course is to teach you to apply graph theory in a real-world situation. Since the graph can be used for many common real-world problems, knowing graph theory helps to visualize the problem better.
The most significant advantage of graph algorithms is that they can represent relations like how two persons are related. You may not know, but many social networking websites like Facebook, and Twitter uses graph algorithms to find your friends, colleagues, and other people you may know.
4. Data Structures and Algorithms Bootcamp [Udemy Course]
This is a perfect course for anyone preparing for coding interviews and who wants to brush up on their data structure and algorithms skills. Since most of the coding interview focuses on Data Structures, Algorithms and System Design, it make sense to brush up these 3 topics really well before your next coding interview.In this course, you will not only learn about fundamental data structures like an array, linked list, hash table, binary tree, heaps, and sorting algorithms but also learn about the whole coding interview process and how to solve those commonly asked coding interview questions.
This is a two-part course where the first part covers linked lists, stacks, queues, binary trees, and hash tables, and the second part includes data sorting, string searching, sets, AVL trees, and concurrency issues.
You need a Pluralsight membership to access this course, which costs around $29/month or $299/year, but if you want to explore, you can also check it for free by signing up for their 10-day free trial.
5. Data Structure part 1 and 2 [Best Pluralsight course]
This is an excellent beginner-level course to learn data structure and algorithms. In this course, you will not only learn the core data structures and algorithms used in everyday applications but also understand the trade-offs involved with choosing each data structure, along with traversal, retrieval, and update algorithms.This is a two-part course where the first part covers linked lists, stacks, queues, binary trees, and hash tables, and the second part includes data sorting, string searching, sets, AVL trees, and concurrency issues.
You need a Pluralsight membership to access this course, which costs around $29/month or $299/year, but if you want to explore, you can also check it for free by signing up for their 10-day free trial.
6. Algorithms, Part I [Free Coursera Course]
This is one of the most popular online courses on Data Structures and Algorithms, not just in Coursera but also on other learning portals.If you have read Algorithms 4th Edition, one of the better books on Data Structures for Java developers, then you will be surprised to know that this course is based upon that book, and instructors are also the author of the books.
This is a two-part course where the first part covers elementary data structures, sorting, and searching algorithms. The course is free, and 100% online, which means you can learn from your own schedule.
It requires approximately 32 hours to complete, and the course is available in both English and Korean. The weekly homework is also impressive and helps you to retain the knowledge you learn.
The course is also full of visual diagrams and useful animations, crucial to understanding how data structure and algorithms work.
This is a two-part course where the first part covers elementary data structures, sorting, and searching algorithms. The course is free, and 100% online, which means you can learn from your own schedule.
7. Algorithms, Part II [Free Online Course]
This is the second part of the Algorithms course offered by Princeton University and served by Kevin Wayne and Robert Sedgewick, professors of Computer Science. In the first part, you learn about elementary data structure, sorting, and searching algorithms, while in this part, you will learn n graph- and string-processing algorithms.It requires approximately 32 hours to complete, and the course is available in both English and Korean. The weekly homework is also impressive and helps you to retain the knowledge you learn.
8. Easy to Advanced Data Structures [Udemy Course]
This is an excellent course to learn Data Structure and Algorithms on Udemy. The author is a former Google Software Engineer, and he has a strong knowledge of data structure and algorithms.
The course is also full of visual diagrams and useful animations, crucial to understanding how data structure and algorithms work.
More than 23000 students have already benefited from this free course, and if you want to kick-start your Data Structure journey, there is no better online data structure course than this one.
9. Learn Algorithms on Boot.Dev
If you don't know Boot.Dev is an interactive learning platform to learn essential tech skills for backend developers, including Data Structures and Algorithms.
They have dual courses: "Learn Algorithms" and "Learn Data Structures" which are written in Python and can be used by Python developers to learn essential Data Structure and Algorithms in quick time.
You can also use these courses to master all the skills you need to crack coding interviews and land Software and backend development jobs. The best part? This isn't just theory, Boot.dev teaches hands-on coding skills every step of the way.
You'll be applying DSA principles to real world coding projects and challenges in every lesson.
The best part? Boot.dev is super fun. They have a gamified fantasy feel to the platform that makes the whole learning experience addicting and engaging.
Although, the lessons are free, but use code JAVINPAUL to get 25% off of a membership that will get you certificates of completion, progress verification, and more! You can try the demo to see it yourself as shown below:
10. Grokking Algorithms [Book]
This is not an online course but a book that I admire a lot. It's one of the best books on Data Structure and Algorithms, which I have read in recent times. It's not a comprehensive book like CLRS or Introduction to Algorithms by Thomas H. Cormen, but it's much more comfortable and enjoyable to read than that.
It doesn't cover all the data structures and algorithms, but whatever it covers, it covers them well. It's full of visual diagrams, which makes learning more engaging and helps to understand key concepts better.
Overall, simply, the best Algorithms book for any beginner, and highly recommend it to anyone who wants to learn Algorithms. There is only one thing which you may not like about it is that the examples are in Python than Java, but the theory is superb and for that alone it deserves mention here.
It doesn't cover all the data structures and algorithms, but whatever it covers, it covers them well. It's full of visual diagrams, which makes learning more engaging and helps to understand key concepts better.
Overall, simply, the best Algorithms book for any beginner, and highly recommend it to anyone who wants to learn Algorithms. There is only one thing which you may not like about it is that the examples are in Python than Java, but the theory is superb and for that alone it deserves mention here.
11. Data Structures in Java: An Interview Refresher [ Interactive Course]
This is an excellent refresher course on Educative to learn typical data structure and algorithms for Java programmers from Educative, a text-based, interactive website to learn essential tech skills.The best thing about Educative is that it allows you to run code right in your browser, which means you cannot only learn about algorithms but also can execute sample programs step by step on your browser to actually learn what's going on.
All code examples are presented in Java, which makes them easy to learn and understand. If you are preparing for coding interviews, then you can check this course to refresh your Data Structure and Algorithms skills.
And, if you find the Educative platform and their Grokking courses like Grokking Coding interview Patterns useful for coding interviews then consider getting an Educative Subscription which provides access to their 210+ courses for just $14.9 per month. It's very cost-effective and great for preparing for coding interviews.
That's all about some of the best courses to learn Data Structures and Algorithms in Java. In this article, I have shared data structure and algorithms courses for beginners and experienced developers. It covers both basic data structures like array, linked list, binary tree, stack and queue as well as advanced data structures like graphs, priority queue, heap and Trie.
As I have said, the list contains both free and paid courses and you can choose the one you like. Though, whatever course you choose, be honest with that and do all the exercises they suggest.
And, here is a nice data structure and algorithm cheat sheet to master BigO notation and remember the time and space complexity of both basic and advanced data structures:
And, If you want, you can practice more by solving standard Data Structure and algorithm problems from interviews as well. You can see this list of 100+ Data structures and Algorithm problems to start with.
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Thanks for reading this article so far. If you like these awesome best Java Data structures and Algorithms courses, then please share them with your friends and colleagues. If you have any questions or feedback, then please drop a note.
P. S. - If you are looking for some free Data Structure and Algorithms courses to improve your understanding of Data Structure and Algorithms, then you should also check this list of free Data Structure and Algorithms courses which are entirely free of cost
I am a computer science student. Earlier i was looking for a course that can teach me programming from scratch. I am going to share my experience about pepcoding that has done an exemplary work.Pepcoding is providing its content free of cost. Since I found their content very much effective and it has helped me in learning programming from the very beginning. Therefore, I am sharing their post with you.
ReplyDelete“We at pepcoding have recently made our level 1 data structures course, free for all.
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Pepcoding has also decided to make all it's current and future content free of cost for the benefit of the community.Pepcoding site is free of cost, aiming at competitive programming and most important interview questions in top product-based companies.”
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