# Top 5 Data Structures and Algorithms Courses and Classes for Beginners [Python + Java + JavaScript]

Data Structures and Algorithms are one of the most essential topics for programmers. The best thing about them is that they never get out-of-date, and any investment you made in terms of time and money will pay rich dividends for a long time. I have also found that people good at algorithms and data structures are often a better programmer than others. They tend to improve your programming skill and coding sense, and that's the main reason I suggest all kinds of programmers, from junior to senior to spend some time revising, refreshing, and honing your data structure and algorithm skills. Most of us first heard about them in school and colleges but didn't understand at that time. At least I can say that to me. I first heard about the array and linked list of my engineering college.

That time I didn't know what is the use of an array and linked list because most of the questions we face were based on theoretical knowledge without any practical application.

For example, the difference between an array and linked list was a sure-shot one to appear in the exam, and just mugging the answer was enough to score well.

It may be possible that you might have better learning them myself in your college and school, but that's a general pattern.

I first realize the real use of array when I was writing games for mobile devices in my first companies. I was tasked to write a board game, and then I found that I can use a two-dimensional array as a board and just store 1 or 0 to indicate whether a particular place is occupied or not.

That was my first real-world experience with a data structure and how they play roles in real-world applications. I know it came quite late, and I was lucky to found my way without knowing much about data structure, algorithms, and programming in general, but that was the ting of the past.

Nowadays, the environment has become very competitively, and you just can't afford to miss these critical concepts. You also need to be more proactive with your learning then the past generation was.

If you are one of them and actively looking to learn algorithms and data structure and looking for some excellent courses to start your journey, then you have come to the right place. In this article, I am going to share some of the best data structure and algorithm courses for Java, Python, and JavaScript developers.

## 5 Data Structures and Algorithms Courses for Programmers

Many of my readers were asking me about data structure and algorithms courses on various programming languages, mostly in Java, Python, and JavaScript.

I told them that data structure and algorithms are general programming concepts and once you are familiar with concepts you can work in any language, but with my little interaction with them, I realized that people know more about a programming language like Java or Python than a data structure like a linked list or binary tree.

That's why it works best for them if data structures and algorithms are explained and implemented in the language they know better.

That makes sense to me, and that's why I have included data structure and algorithm courses on these three programming languages.

But, even if you don't use those languages, you can still benefit from these courses because ultimately, data structure and algorithms are generic, and they are just concepts that can be implemented in any language.

### 1. Data Structures and Algorithms: Deep Dive Using Java

This is one of the most comprehensive courses on data structure and algorithms using Java.

It provides an excellent and straightforward guide to implement the most up to date algorithms from scratch: arrays, linked lists, graph algorithms, and sorting, etc.

You will also learn about binary trees, balanced trees like AVL trees and red-black trees, heaps including heapsort algorithm, and associative arrays and dictionaries.

If you are a Java developer and looking for an excellent data structure and algorithm course, then you should join this. It's comprehensive, but at the same time, both exciting and challenging.

### 2. JavaScript Algorithms and Data Structures Masterclass

This is one of the best courses to learn Data Structures and Algorithms in JavaScript, and seriously, you won't find a better course at such a ridiculous price.

I bought this course in just \$10 on Udemy's flash sales, which happens every month, and I am amazed by its quality. The reason I bought this course because of Colt Steele, he is one the best instructor in Udemy and his classes are just awesome.

Having attended his course The Web Developer Bootcamp, I was sure of the quality, and when I see he has covered Data Structure and Algorithms, I couldn't resist myself from buying this course.

As Colt mentioned, This course crams months of computer science and interview prep material into 20 hours of content, which has helped his bootcamp students ace interviews at big tech companies like Google, Tesla, Amazon, and Facebook.

The course not only covers basic data structures like an array, linked list, and binary tree but also includes "advanced topics" like Heaps, Graphs, and Dijkstra’s Shortest Path Algorithm.

You will not only learn about data structure but also about how to analyze your code’s time and space complexity using Big O notation and techniques to reduce them by making space-time trade-off.

The course also covers the ins and outs of Recursion, an vital technique to solve many linked lists and binary tree-based questions. You will also learn techniques to solve difficult coding problems you might see first times. In short, one of the best courses to learn data structure and algorithms in JavaScript.

### 3. Algorithms and Data Structures in Python

This is the best data structure and algorithm course I have come across for Python developer.

It covers both basic and advanced data structure like Arrays, Linked Lists, Trees, Hashtables, Stacks, Queues, Heaps, Sort algorithms like QuickSortMergeSort, and Insertion sort and Search algorithms like linear and binary search.

The course also covers some of the advanced algorithms like shortest path algorithms, Dijkstra's algorithm, Bellman-Ford algorithm, Kruskal algorithm, spanning trees, etc.

On sorting algorithm, it covers basic ones like the bubble sort, selection sort, and insertion sort, along with quicksort and the merge sort. It also includes non-comparison based sorting algorithms like Counting sort and Radix sort.

All the code examples and problems are implemented using Python programming language so that you don't have any difficulty in understanding how to apply them on your own.

### 4. Algorithms and Data Structures - Part 1 and 2

Being a Java developer, I am a little bit biased to include more data structure and algorithm courses than any other language.

Another reason is that I have spent most of my team coding in Java, so I have just attended a lot more courses in Java than JavaScript or Python.

This one is another impressive course to learn data structure and algorithms which I have attended and found suitable. In this course, you will learn about the core data structures and algorithms used in everyday applications.

You will learn about the trade-offs involved with choosing each data structure, along with traversal, retrieval, and update algorithms.

This is part 1 of a two-part series of courses covering algorithms and data structures. In the second part of the course, you will learn linked lists, stacks, queues, binary trees, and hash tables. I suggest you go through both pieces to understand both basic and advanced data structures.

### 5. From 0 to 1: Data Structures & Algorithms in Java

As the name suggests, this course is for beginners and takes you from 0 to 1. The course is delivered by a team of instructors with tons of experience at Google, Microsoft, and Flipkart.

The best thing about the course is that it's an animated, visual, and spatial way to learn data structures and algorithms, which many beginners will find both interesting and more comfortable.

I have seen many programmers struggle to pick topics like recursion, data structure, and algorithms because they can't visualize what's happening; this course help to solve that problem by using technology and creativity.

If you are a beginner and having a hard time understanding data structure, algorithms, and recursion, then this is the perfect course for you.

That's all about some of the best courses to learn Data Structure and Algorithms. I have included courses for both Java and Python Programmers, but as I have said before, data structures and algorithms are language-independent topics. Once you know how a particular data structure or algorithm works, you can implement in any programming language of your choice.

Other Programming Resources you may like

Thanks for reading this article so far. If you like these data structure and algorithm courses, then please share it 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 courses and books to learn Data Structure and Algorithms, then you can also check out this list of free Data Structure courses and books on HackerNoon.