Top 10 Online Courses to learn Data Structure and Algorithms in Java

Hello guys, In the past, I have shared a lot of useful resources like books and tutorials to learn Data Structure and Algorithms in Java. I have also shared a lot of Data Structure and Algorithmic interview questions like this and their solutions in Java, but I have constantly got queries about good 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 for free algorithms courses instead of paid ones while others are happy with the good course regardless of whether it's free or paid. In order to fulfill my promise, I did some more research and bring with 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 is common from my previous list, obviously because it is one of the best course to learn algorithms and data structure in Java. But, the list also contains some new entrants like Data Structures and Algorithms Bootcamp.

This time, I have focused more on coverage of essential data structure in a fun and interesting way, rather than picking the course which covers 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 his voice, the style of explanation and the content.

If you join a course where the instructor is both knowledgable and enthusiastic and also have good teaching skill, 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 provides value for both your time and money.




10 Data Structure and Algorithms Courses and Certifications

Without wasting any more of your time, here is my list of some of the best online training course 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 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
This is my go-to course to any Java programmers 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 structure 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 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.

Top 10 Online Courses to learn Data Structure and Algorithms in Java



2. Easy to Advanced Data Structures
This is an excellent free course to learn Data Structure and Algorithms on Udemy. The Author has worked in Google and he has good knowledge of data structure and algorithms. The course is also full of animations which are key to understanding how data structure and algorithms work. More than 23000 students have already benefitted from this free course and if you want to kick-start your Data Structure journey, there is no better free course than this one.



3. Graph Theory Algorithms
This is another fantastic course on Algorithms by William Fiset, the instructor of the previous course. This course actually complements his previous course because it covers advanced Data Structure like Graph which is often ignored by programmers. If you know graph can represent anything which is related to each other like cities connected with roads, router connected with cables and even Facebook user 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.

best data structure and algorithms books

The goal of this course to teach you to apply graph theory in a real-world situation. Since the graph can be applied to many common real-world problems, knowing graph theory helps to visualize the problem better.

The biggest advantage of graph algorithms is that it can represent relations like how two persons are related. You may not know but many social networking websites like Facebook, Twitter uses graph algorithms to find your friends, colleagues, and other people you may know.



4. Data Structures and Algorithms Bootcamp
This is a perfect course for anyone preparing for coding interview and want to brush-up their data structure and algorithms skills. In this course, you will not only learn about fundamental data structure 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.


5. Data Structure part 1 and 2
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 trade-offs involved with choosing each data structure, along with traversal, retrieval, and update algorithms.

This is a two-part course where first part covers linked lists, stacks, queues, binary trees, and hash tables and the second part covers data sorting, string searching, sets, AVL trees and concurrency issues.

You need a Pluralsight membership to access this course which cost 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.

best Java data structure and algorithms courses



6. Algorithms, Part I
This is one of the most popular online course on Data Structure and Algorithms, not just in Coursera but also on other learning portals. If you have read Algorithms 4th Edition, one of the better book on Data Structure 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.


7. Algorithms, Part II
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 approx 32 hours to complete and the course is available on both English and Korean. The weekly homework is also awesome and helps you to retain the knowledge you learn.




8. Object Oriented Java Programming: Data Structures and Beyond Specialization
This is one of the best course specializations on Data Structure and Algorithms for Java Programmers. If you know a Coursera specialization is a combination of related courses to build skill and also provides a certificate once you complete all courses and do the required project.

There are 5 Courses in this Specialization which will not only teach you data structure but also 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 wants to prepare for interviews, this could be a valuable resource for you.


9. Data Structures in Java: An Interview Refresher
This is a good refresher course on Educative to learn common data structure and algorithms for Java programmers. 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.




10 Grokking Algorithms
This is not an online course but a book which I admire a lot. It's one of the best books on Data Structure and Algorithms which I have read in recent time. It's not a comprehensive book like CLRS or Introduction to Algorithms by Thomas H. Cormen but its much easier and interesting to read than that.

It doesn't cover all the data structure and algorithms but whatever it covers it covers them well. It's full of visual diagram which makes learning more engaging and helps to understand key concepts better.

Overall, simply, the best Algorithms book for any beginner and highly recommend 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 only it deserves a mention here.


That's all about some of the best courses to learn Data Structures and Algorithms in Java. As I have said, the list contains both free and paid courses and you can choose the one you like. Whatever course you choose, be honest with that and do all the exercises they suggest. If you like you can practice more by solving common Data Structure and Algorithms problems from interviews as well. You can see this list of 50+ Data Structure and Algorithms problems to start with.


Other Online Course Recommendations for Programmers

Thanks for reading this article so far. If you like these Java Data structures and Algorithms courses then please share 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 Algorithms courses to improve your understanding of Data Structure and Algorithms, then you should also check these list of free Data Structure and Algorithms courses which are completely free of cost

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