Are you on a mission to master Data Structures and Algorithms without spending a rupee?
In this blog, we’ll look at the best websites to practice Data Structures and Algorithms for free, offering you a chance to sharpen your coding skills.
10 Best Websites for Practicing DSA – Overview
Here’s an overview of the top 10 websites to practice Data Structures and Algorithms:
| S.No. | Website Name | Pricing | Certification & Rewards | Website Link |
|---|---|---|---|---|
| 1 | GUVI | Free | Yes | Visit Now |
| 2 | HackerRank | Free | No | Visit Now |
| 3 | LeetCode | Free, Paid | No | Visit Now |
| 4 | GeeksforGeeks | Free, Paid | No | Visit Now |
| 5 | Codewars | Free | No | Visit Now |
| 6 | HackerEarth | Free | No | Visit Now |
| 7 | CodeChef | Free | No | Visit Now |
| 8 | Programiz | Free | No | Visit Now |
| 9 | W3Schools | Free | No | Visit Now |
| 10 | Techie Delight | Free | No | Visit Now |
Best Websites to Practice Data Structures and Algorithms
Below is the list of best websites to practice Data Structures & Algorithms for beginners:
1. GUVI
CodeKata hosts a diverse range of coding problems used by top companies like Microsoft, Walmart, and Samsung, aimed at sharpening coding skills.
Practicing on CodeKata elevates users’ coding skills, making them attractive candidates for tech recruiters.
Questions Diversity: Students can practice topics such as Arrays, Mathematics, Strings, Basics, Sorting, Matrix, Hashing, Dynamic Programming, and various data structures including Linked Lists, Trees, Graphs, and more.
Pricing: Free
Certifications and Rewards: Rewards are available in the form of “Geekoins” earned by solving challenges.
Language Options: English
Community and Support: Nil
2. HackerRank
HackerRank provides a platform for practicing and solving challenges related to data structures, aimed at enhancing problem-solving skills in various data structure topics.
Users can tackle exercises ranging from basic to advanced levels, improving their coding skills and preparing for technical interviews.
Questions Diversity: The challenges cover a broad spectrum of data structures, including arrays, linked lists, trees, stacks, queues, heaps, and more. The problems range in difficulty from easy to hard, each tagged with a difficulty level and success rate.
Pricing: Free
Certifications and Rewards: Nil
Language Options: English
Community and Support: FAQs, discussion forums for each challenge, and a blog.
3. LeetCode
LeetCode offers a comprehensive suite of algorithmic challenges designed to boost coding skills and prepare users for technical interviews.
The platform features a wide array of problems, from foundational exercises to complex scenarios faced in real-world programming and interviews at top-tier tech companies.
Questions Diversity: The problem set encompasses a diverse array of topics including arrays, strings, hash tables, dynamic programming, sorting, depth-first search, binary search, trees, graphs, and more.
Pricing: Free/ Paid
Certifications and Rewards: Nil
Language Options: English
Community and Support: Discussions, articles, and an interview preparation section.
4. GeeksforGeeks
GeeksforGeeks offers a practice platform designed to enhance coding skills through a variety of programming problems.
It provides a vast array of challenges across different domains and companies, enabling users to prepare for technical interviews and improve their problem-solving capabilities.
Questions Diversity: The platform features problems spanning various complexities and topics, such as arrays, linked lists, strings, algorithms, and data structures.
Problems are associated with specific companies like Amazon, Microsoft, and Flipkart, reflecting real-world interview questions from these employers.
Pricing: Free/ Paid
Certifications and Rewards: Nil
Language Options: English
Community and Support: Forums, tutorials, and articles.
5. Codewars
Codewars provides a collection dedicated to Data Structures & Algorithms, offering a series of “Kata” challenges that help coders master various programming techniques and concepts.
This collection is designed to improve problem-solving skills in areas like binary trees, recursion, and algorithmic strategies, contributing to overall coding proficiency.
Questions Diversity: The collection includes problems involving binary trees, recursion, binary search trees, and fundamental algorithm concepts.
Pricing: Free
Certifications and Rewards: Nil
Language Options: English
Community and Support: Leaderboards, a Discord server, and a GitHub discussions board.
6. HackerEarth
HackerEarth offers a focused section for practicing problems on 1-D arrays within their broader data structures practice area.
This section includes a variety of challenges designed to test and improve a programmer’s understanding and handling of one-dimensional arrays.
Questions Diversity: The problems cover various applications of 1-D arrays, ranging in difficulty from easy to medium. Challenges include tasks like calculating sums according to frequency, determining bitwise AND sums, and creating non-decreasing arrays. Each problem is tagged with its success rate and the number of attempts.
Pricing: Free
Certifications and Rewards: NIl
Language Options: English
Community and Support: Community discussions, hackathons, direct support for queries, tutorials, and interview preparation materials.
7. CodeChef
CodeChef provides an extensive set of practice problems under its Data Structures category, designed to enhance the problem-solving skills necessary for competitive programming and technical interviews.
The platform categorizes problems into various data structures such as arrays, linked lists, stacks, queues, and more.
Questions Diversity: The Data Structures section offers a range of problems covering basic to advanced topics, including linked lists, heaps, stacks, queues, and matrices.
Pricing: Free
Certifications and Rewards: Nil
Language Options: English
Community and Support: Forums and discussions, allowing users to interact, seek help, and share insights.
