10 web sites to apply coding issues: Our picks

Whether or not you are simply beginning out as a coder or wish to advance your coding expertise, tackling programming issues is a part of the plan. 

Handy, free, and even enjoyable, coding downside web sites problem your skills with particular person workout routines, pleasant challenges, and insightful assessments.

Practising your coding via these web sites could improve your data, construct your expertise, and put together you for programming job interviews. 

High web sites for practising your coding expertise

How laborious is it to study coding? Ranging from scratch will be tough, however coding challenges designed to check and advance your expertise could assist. We rounded up 10 nice web sites for coding issues and listed them alphabetically for you. 

Every web site gives a set of sources for studying coding or advancing what you already know. 

1. CodeChef

CodeChef allows you to select amongst 1000’s of issues to apply expertise like sorting, information constructions, and dynamic programming. Issues are sortable by issue. Code Chef’s apply issues help you reply in certainly one of over 50 programming languages as you put together for its inside or exterior month-to-month contests. 

CodeChef gives self-guided studying alternatives and mentoring applications alongside a neighborhood of coders, coding bootcamps, and tech certification applications. 

2. Coderbyte

Designed for coding apply and enchancment, Coderbyte gives code challenges and programs aimed toward serving to you put together for job interviews. 

Coderbyte had over three million options with challenges in additional than 25 languages. Starter programs in algorithms, JavaScript, Ruby, and Python accompany interview kits and profession sources. 

You possibly can join a free problem and free trial. A month-to-month subscription to Coderbyte prices $35 and an annual subscription is $150. Each provide you with entry to all of Coderbyte’s sources. 

3. Codewars

Launched in 2012, Codewars offers apply kata, or small coding workout routines, that you just advance via as you construct your expertise. Codewars’ kata can be found in almost 60 programming languages and in ranges from newbie to superior.

You possibly can develop your individual kata, interact with the Codewars neighborhood, and grasp one or a number of languages within the course of. Suggestions and artistic studying facilitate inventive pondering and innovation amongst Codewars’ customers. Codewars gives sources for educators and firms as effectively. 

4. CodinGame

With greater than 25 supported languages, CodinGame offers challenge-based programming coaching via video games, puzzles, and competitions. 

CodinGame’s sources allow you to construct your programming skills, study new ideas, and work together with fellow coders via straightforward, medium, laborious, and really laborious workout routines.

CodeinGame’s leaderboard and prizes earn you recognition out of your friends and observe your progress. Free dwell streams, blogs, and dialogue boards for builders accompany sourcing, screening, and retention applications for recruiters. 

5. Geektastic

With human-reviewed technical assessments, Geektastic lets corporations customise coding challenges for expertise acquisition and engineering staff coaching. You probably have coding expertise, you possibly can be part of Geektastic’s reviewer neighborhood to create and check these challenges — and receives a commission to assessment candidates’ efficiency. 

Code challenges are provided in Java, Python, and PHP. Geektastic additionally gives expertise assessments in Java, Javascript, and fundamental coding. Becoming a member of as a developer comes with no value, whereas versatile pricing accommodates companies of any measurement. 

6. HackerRank

HackerRank serves as a technical interview platform, but in addition offers coding apply to over 18 million customers. Challenges provided by HackerRank cowl subjects together with algorithms, Java, Python, Ruby, and information constructions. 

HackerRank’s challenges help you check your code, debug it, and win certainly one of its dash, firm, language, or timed challenges. You too can earn certifications in particular expertise or full interview preparation kits. Pricing ranges from $25/month for interview content material to $819/month staff subscriptions.

7. LeetCode

LeetCode offers greater than 2,250 apply issues to its programmer neighborhood. Particular person challenges in subjects like algorithms, database constructions, and dynamic programming accompany total research plans. 

LeetCode’s programming expertise research plan integrates three modules provided at straightforward, medium, or laborious issue ranges. LeetCode helps 14 programming languages and homes a playground instrument that will help you check, debug, and write code. 

Signal-up is free. LeetCode Premium gives entry to extra instruments and premium content material for a month-to-month subscription of $35 or an annual charge of $159. 

8. Mission Euler

Named for mathematician Leonhard Euler, Mission Euler started in 2001. Current and archival content material is on the market for registered customers for gratis. 

Mission Euler gives computational programming issues combining arithmetic with pc and programming expertise. With 108 programming languages and a couple of million customers, Mission Euler offers issues with various issue.


Sphere On-line Choose, or SPOJ, trains customers to code and construct environment friendly algorithms via greater than 20,000 apply issues. Scoring classes for issues embrace challenges, tutorials, and riddles. Rankings and a standing board accompany operating contests that help greater than 45 programming languages and compilers. 

SPOJ gives a versatile testing system to mechanically assess user-submitted applications. Customers can design their very own contests or participate in an internet course in any respect programming ranges, however it’s preferrred for college students.

10. TopCoder

TopCoder’s neighborhood of designers, builders, information scientists, and aggressive programmers construct their expertise, present their experience, and earn cash as they enhance their coding skills. TopCoder pays people for his or her work, sells it to company purchasers, and hosts competitions designed to spotlight high coding expertise worldwide.

Prospects use TopCoder to rent freelancers on-demand, set challenges for the coding neighborhood, and discover groups for initiatives.

This text was reviewed by Monali Mirel Chuatico

Monali Mirel Chuatico, a woman with long dark hair, smiles in a headshot.

In 2019, Monali Mirel Chuatico graduated together with her bachelor’s in pc science, which gave her the inspiration that she wanted to excel in roles reminiscent of information engineer, front-end developer, UX designer, and pc science teacher.

Monali is presently an information engineer at Mission Lane. As an information analytics captain at a nonprofit known as COOP Careers, Monali helps new grads and younger professionals overcome underemployment by educating them information analytics instruments and mentoring them on their skilled improvement journey.

Monali is keen about implementing inventive options, constructing neighborhood, advocating for psychological well being, empowering ladies, and educating youth. Monali’s objective is to achieve extra expertise in her area, broaden her talent set, and do significant work that can positively affect the world.

Monali Mirel Chuatico is a paid member of the Purple Ventures Schooling Integrity Community. 

Final reviewed April 21, 2022.

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