Monday, February 3, 2025

Top 10 Websites to Improve Coding Skills in 2025 - Best of Lot

Hello guys, if you are preparing for programming interviews or just want to improve your coding skills and looking for practice websites then you have come to the right place. Earlier, I have shred best System Courses, Books, System Design Interview Guide, Cheat Sheets, and System Interview Questions and today I am going to share 10 best resources to improve your coding skills. These sites include not just website where you can solve coding problems like LeetCode but also where you can solve real life coding challenges and earn money or bounties like Top Coder. You can use these websites to not just prepare for coding interviews but also to improve your coding and programming skills. 


10 Best Places to Practice and Improve Coding skills in 2025

Do you love programming challenges? If Yes, then you will be happy to see so many free resources available to improve your programming skills. 

There are so many websites, which has interesting programming questions, puzzles, riddles, problem set, and challenges. Some of them even provide a worldwide ranking, so that you can judge yourself among other programmers from all over the world.

In this article, we will see my collection of 10 websites, which provides programming and coding challenges. I have tried to include a mixture of sites that have both easy, moderate, tough, and extremely difficult programming challenges.

Some of the sites allow the user to comments and you can learn so much from those comments, in terms of approach, an alternative solution, and experience of those developers. 

I highly recommend any programmer to choose one of these sites, which he feels comfortable as per his programming skill, and then slowly increase the difficulty level.

Programmers, who are aiming for job at Google, Microsoft, Amazon, Facebook, ThoughtWorks, Directi, and other technology companies, must try to solve some programming challenges from these websites.

The TopCoder is most recognized among all of them and if you are really good, you must participate in Google Code Jam as well. 

Not only these improve your programming skill but also improve your reputation as a star programmer. 
Many companies look at this website and also hires top programmers.  So what are you waiting for, go register and try some challenges?

Apart from these 10 websites, there are a lot of other places on the internet which offers programming challenges of varied difficulty level. 

Remember, a number of the website will not make you a better programmer, it's you, your approach, and dedication which will help. Sometimes too many things confuse as well, that's why I  why I suggest choosing one of them, go through them.

Once you have some confidence, you must try TopCoder, one site which is well recognized and respected in the programming world. By the way, you can also let me know, which is your favorite programming website, have you tried programming challenges from any mentioned sites?

Top 10 Websites to Improve Coding Skills



Other sites
Here are few more websites which you can checkout to find more coding exercises, puzzles and code katas to improve your coding skills. 
  • Reddit programming challenges: http://www.reddit.com/r/programmingchallenges
  • UVA Online judge http://uva.onlinejudge.org/
  • Google Code Jam http://code.google.com/codejam/
  • http://train.usaco.org/usacogate
  • https://sites.google.com/site/prologsite/prolog-problems
  • http://www.ocf.berkeley.edu/~wwu/riddles/intro.shtml
  • http://acm.timus.ru/
  • http://www.olympiad.org.uk/
  • http://domino.research.ibm.com/comm/wwwr_ponder.nsf/pages/index.html
  • Rosetta Code: http://rosettacode.org/wiki/Rosetta_Code
  • http://poj.org/problemlist
  • http://www.rankk.org/
  • Code Kata: http://codekata.pragprog.com/2007/01/code_kata_backg.html#more
  • Facebook Programming Challenges: http://www.facebook.com/careers/puzzles.php
  • Python Challenges: http://www.pythonchallenge.com/
  • Al Zimmermann’s Programming Contests http://www.azspcs.net/
  • Ruby Quiz: http://rubyquiz.com/
  • C Puzzles: http://www.gowrikumar.com/c/index.html
  • http://mindcipher.net/
  • Check out http://www.javaist.com There are some fun Python challenges.
  • 29 Programming challenges for beginners from Ubuntu forums  http://ubuntuforums.org/showthread.php?t=876494

That's all about the top 10 websites to practice coding problems and build your programming and coding skills in 2025. Many of these websites are also great for competitive programming and you can even earn rewards and gigs by doing well on them. 

Other Programming Articles and Tutorials you may like

Thanks for reading this article so far. If you know any excellent online resources like websites or programming platforms to improve coding and programming skills especially for beginners, which you think complements these two websites, then feel free to share. Everybody loves great  resources and happy learning System design.

P. S. - If you are looking for a book to learn Algorithms then you can also checkout Grokking Algorithms 2nd Edition by Aditya Bhargava, I just finished reading this book and its really amazing. Even though I have fair ideas about topic, this book is simply awesome to read and revise essential algorithms used in programming and coding. 

By javin paul at February 03, 2025
Labels: best of javarevisited , online resources , programming

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