Best Websites to Practice Data Structures and Algorithms for Free
Many people start learning Data Structures and Algorithms by watching videos or reading notes, but struggle when it comes to solving problems on their own. Without regular hands-on practice, it becomes hard to apply what you’ve learned or feel confident during interviews.
Platforms like Placement Preparation, GUVI, HackerRank, and LeetCode help bridge this gap. These tools offer a mix of guided problems, practice challenges, and interview-style questions to help you get better through consistent problem-solving.
This blog will help you discover websites that make practicing DSA easier, especially if you’re just starting out or preparing for job placements.
10 Best Websites for Practicing DSA – Overview
If you’re new to DSA, choosing where to practice can feel a bit confusing. Some platforms are too advanced, while others don’t offer enough feedback or structure for beginners.
To help you get started the right way, we’ve listed websites that offer clear instructions, practice sets arranged by topic, and helpful explanations. These platforms are made to support your journey, whether you are brushing up for interviews or just learning the basics.
Here’s an overview of the top 10 websites to practice Data Structures and Algorithms:
| S.No | Website Name | Difficulty Level | Pricing | Website Link |
|---|---|---|---|---|
| 1 | Placement Preparation | Beginner | Free | Visit Now |
| 2 | GUVI – CodeKata | Beginner | Free | Visit Now |
| 3 | HackerRank | Beginner | Free | Visit Now |
| 4 | LeetCode | Beginner | Free | Visit Now |
| 5 | GeeksforGeeks | Beginner | Free | Visit Now |
| 6 | Codewars | Beginner | Free | Visit Now |
| 7 | HackerEarth | Beginner | Free | Visit Now |
| 8 | CodeChef | Beginner | Free | Visit Now |
| 9 | Programiz | Beginner | Free | Visit Now |
| 10 | W3Schools | Beginner | Free | 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. Placement Preparation
Placement Preparation provides a live coding environment tailored for data structures and algorithms practice. It arranges exercises by learning levels, from basic to advanced, and includes questions commonly asked in top IT placements.
The platform offers real-time hints and immediate feedback, helping beginners correct mistakes as they code. Many questions are repeated from placement exams at companies like TCS, Infosys, and Cognizant, offering authentic interview exposure.
Learners can track their progress through metrics like accuracy, making their growth visible.
Practice Format: Live coding practice
Learning Path: Arranged by learning levels
Difficulty Level: Beginner to advanced
Progress Tracking: Attempts, accuracy, leaderboard
Pricing: Free
2. GUVI – CodeKata
GUVI’s CodeKata offers daily structured challenges that build DSA skills gradually. It focuses on data structures and algorithms, making it ideal for beginners to intermediate learners.
Each solved challenge rewards users with Geekoins, providing a simple gamified progression system.
Practice Format: Daily challenges
Learning Path: Topic-wise, level-based
Difficulty Level: Beginner to intermediate
Progress Tracking: Geekoins earned
Pricing: Free
3. HackerRank
HackerRank provides a DSA challenge platform covering topics like arrays, linked lists, trees, and heaps. Problems are tagged by difficulty and include success rates, helping users choose the right level.
The platform includes discussion forums, FAQs, and a blog, making it easy to learn from others.
Practice Format: Question sets by topic
Learning Path: Tagged by difficulty
Difficulty Level: Easy to hard
Progress Tracking: Leaderboards and success metrics
Pricing: Free
4. LeetCode
LeetCode offers a comprehensive set of DSA problems in line with real interview questions from product companies. Topics include everything from arrays to graphs and dynamic programming.
It features community discussions, articles, and interview prep guides, making it suitable for deeper learning.
Practice Format: Self-paced problems
Learning Path: Company/topic/frequency filters
Difficulty Level: Beginner to hard
Progress Tracking: Solved count and profile stats
Pricing: Free and Paid
5. GeeksforGeeks
GeeksforGeeks provides a vast collection of DSA problems tagged by subject and company relevance. It helps learners prepare for interviews at firms like Amazon, Microsoft, and Flipkart.
Support includes tutorials, forum discussions, and detailed articles covering the underlying concepts.
Practice Format: Topic-based challenges
Learning Path: Organized by submissions and tags
Difficulty Level: Beginner to advanced
Progress Tracking: Accepted submissions and badges
Pricing: Free and Paid
6. Codewars
Codewars offers gamified DSA challenges called Kata, focusing on binary trees, recursion, and search algorithms. Challenges get harder as you earn ranks, keeping users motivated.
The platform supports leaderboards, GitHub discussions, and a Discord community for peer learning.
Practice Format: Kata challenges
Learning Path: Ranking-based unlocking
Difficulty Level: Beginner to advanced
Progress Tracking: Rank and Kata solved
Pricing: Free
7. HackerEarth
HackerEarth provides a focused section on 1-D array problems as part of its broader data structure curriculum. These exercises help strengthen array manipulation skills.
Learners can access community discussions, hackathons, and tutorials for further support.
Practice Format: Array problem sets
Learning Path: Easy to medium challenges
Difficulty Level: Easy to medium
Progress Tracking: Attempts and success rate
Pricing: Free
8. CodeChef
CodeChef’s DSA section presents structured practice problems spanning arrays, linked lists, stacks, queues, and matrices. It is well-suited for both placements and competitive programming.
Users can interact and brainstorm solutions through the active forum community.
Practice Format: Structured practice sets
Learning Path: Category and difficulty-based
Difficulty Level: Beginner to advanced
Progress Tracking: Ratings and contest ranks
Pricing: Free
9. Programiz
Programiz offers tutorial-led DSA learning across languages like Python, C++, Java, and C. It covers core topics such as stacks, trees, graphs, sorting, and dynamic programming.
Each tutorial includes interactive exercises and examples, reinforcing learning through practice.
Practice Format: Tutorial + exercises
Learning Path: Language-specific tracks
Difficulty Level: Beginner to intermediate
Progress Tracking: Exercises completed
Pricing: Free
10. W3Schools
W3Schools provides a step-by-step DSA tutorial with inline examples, quizzes, and explanations of time complexity. It’s designed for learners starting from scratch.
The platform includes an in-browser editor to run code as you learn, reinforcing concepts.
Practice Format: Tutorial with quizzes
Learning Path: Basic to advanced modules
Difficulty Level: Beginner to intermediate
Progress Tracking: Quiz completion and demo runs
Pricing: Free
Tips to Practice DSA Effectively
Start with the fundamentals: Begin with core topics like arrays, strings, and recursion. These are the basis for most other data structures and algorithms.
Use platforms that explain your mistakes: Choose websites that offer hints, test cases, or step-by-step solutions. This helps you understand where you went wrong and how to fix it.
Work on small problems regularly: Solve basic DSA problems daily, even if it’s just one or two. Regular practice builds strong logic and improves speed over time.
Build consistency, not volume: Spending 30 minutes every day is more effective than solving many problems at once and taking long breaks in between.
Join coding communities: Be part of online forums or Discord groups focused on DSA. Asking questions and seeing how others approach problems can speed up your learning.
Final Words
With so many helpful platforms available today, practicing Data Structures and Algorithms has become more accessible than ever. Websites like Placement Preparation, GUVI, HackerRank, and LeetCode offer practice problems, structured learning paths, and real-time feedback to help you grow.
Whether you’re preparing for placement tests, building logic for coding interviews, or simply looking to improve your skills, these websites give you the space to learn by solving real problems. We will continue to update this article as more platforms gain popularity and learners share their experiences.
Frequently Asked Questions
1. What are the best websites for practicing data structures and algorithms?
Some of the best platforms for DSA practice include Placement Preparation, GUVI, HackerRank, LeetCode, CodeChef, and freeCodeCamp. These websites cover a wide range of topics and offer hands-on exercises.
2. Why should I choose website for practicing data structures and algorithms?
Websites for DSA practice provide topic-wise questions, live editors, and helpful hints. They make it easier to build problem-solving skills and understand how data structures and algorithms work in real situations.
3. How do I choose the right website for practicing Data Structures & Algorithms?
Look for websites that offer a mix of easy, medium, and hard problems. Make sure they include explanations, allow you to track your progress, and have a clean structure based on specific DSA topics.
4. Which is the best website for beginners to practice DSA?
Placement Preparation is a great choice for beginners because of its clear topic-based problems and hint-supported editor. GUVI and CodeChef also offer beginner-friendly challenges and step-by-step learning options.
5. Is Placement Preparation good for practicing DSA?
Yes, Placement Preparation is ideal for practicing DSA. It features live practice problems with hints, a progression from basic to advanced levels, and interview-style questions based on real company tests.
Explore More DSA Resources
- DSA Learning Websites
- DSA YouTube Channels
- DSA Project Ideas
- Data Structures & Algorithms MCQ
- Data Structures & Algorithms Interview Questions
Explore More Practice Websites
Thirumoorthy serves as a teacher and coach. He obtained a 99 percentile on the CAT. He cleared numerous IT jobs and public sector job interviews, but he still decided to pursue a career in education. He desires to elevate the underprivileged sections of society through education
Thirumoorthy serves as a teacher and coach. He obtained a 99 percentile on the CAT. He cleared numerous IT jobs and public sector job interviews, but he still decided to pursue a career in education. He desires to elevate the underprivileged sections of society through education
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