If you think you have the
best coding skills in the town or if you are a starter and you are
willing to practice your coding and compete against the very best of
coding, then you are reading the right article!
Here are some online programming contests site, where coders from all around the world compete.
These sites have their sets of practice problems, practice sessions and competition rounds. Major of the competitions are sponsored by some big shot companies and they also keep a keen eye on the contests, so who knows you might just one lucky person to be selected for a big internship or for a big job. Some of these competitions are held on weekly, monthly or yearly basis where as others have specific dates for competitions.
Topcoder
TopCoder is indeed the world’s largest competitive software development community where developers from all over the world take part in. The community offers timed programming competitions in various categories like algorithms, testing, design, assembly, SRM, marathon and many others. The competition is sponsored by big names like Microsoft and the NSA and they offer cash prizes for the winners. Solutions can be submitted in Java, C++, C#, or VB.
CodeChef
CodeChef is a non-commercial organization operated by DirectI, an Indian software company based in Mumbai, India. It is a global programming community which hosts online contests, trainings and events for programmers from around the world.
Sphere online judge (SPOJ)
Sphere online judge is one of the earliest competitions, with support for more than 40 programming languages and compilers. The SPOJ platform has been created around an online judge system, which serves for the automatic assessment of user-submitted programs.
CodingBat
CodingBat is a live coding site, which offers problems to build coding skills in Java and Python. The problems here provide instant feedback which also works as a brilliant platform for the coders to practice and grasp the basics of programming.
Google Code Jam
Google Code Jam is an annual programming competition sponsored and supported by Google itself. Here, professional and student programmers provided complex algorithmic challenges to solve using the programming language of their choice in a limited amount of time.
Dream in Code
Dream In Code (DIC) is a online community for programmers and web developers. Members have free access to thousands of programming tutorials, code snippets, forum topics and more.
Codeforces
Codeforces is an online programming platform where you can practice variety of problems and submit competitive ones and compete on problems submitted by other users.
UVa Online Judge
This online coding site is maintained by University of Valladolid, Spain. Here you can find problems from past programming contests such as the ACM International Programming Contest and also one can submit their own source codes in a variety of languages.
Python Challenge
Focused on the Python programming language, Python Challenge is a series of programming challenges. Although any language could be used to solve the puzzles, many of the clues are easier to decipher if you’re working in Python.
Facebook Puzzles
As the name suggests this small set of programming problems is conducted by Facebook to evaluate potential hires. One can submit their solutions in a variety of languages like C++, C, Haskell, Java, Perl, PHP, Python, or Ruby.
ACM-ICPC
ACM – ICPC is one of the world’s largest programming contest conducted annually. The contest is basically sponsored by IBM for teams of students. The contests majorly involves algorithmic programming problems. Regional contests lead to World level Finals. Supports only two languages i.e. C/C++ and Java.
Timus Online Judge
An online competition site that automatically checks your submissions. Supports Java, C#, Pascal, C and C++.
USA Computing Olympiad
Programming puzzles designed to provide "pre-college students with opportunities to sharpen their computer programming skills". The puzzles are still interesting and fun even if you've got a CS degree!
Java Bat
A site dedicated to practical Java programming problems. You can type your code directly into the website, and it'll tell you if you've solve the problem correctly or not.
Informatics Olympiad
A British version of the computing olympiad. Again aimed at school and college students, but fun and interesting for everyone.
Programming Challenges in C, C++ and C#
About.com's C/C++/C# section regularly posts interesting programming puzzles. Successful solutions get acknowledged on the site once the deadline has passed.
Here are some online programming contests site, where coders from all around the world compete.
These sites have their sets of practice problems, practice sessions and competition rounds. Major of the competitions are sponsored by some big shot companies and they also keep a keen eye on the contests, so who knows you might just one lucky person to be selected for a big internship or for a big job. Some of these competitions are held on weekly, monthly or yearly basis where as others have specific dates for competitions.
Topcoder
TopCoder is indeed the world’s largest competitive software development community where developers from all over the world take part in. The community offers timed programming competitions in various categories like algorithms, testing, design, assembly, SRM, marathon and many others. The competition is sponsored by big names like Microsoft and the NSA and they offer cash prizes for the winners. Solutions can be submitted in Java, C++, C#, or VB.
CodeChef
CodeChef is a non-commercial organization operated by DirectI, an Indian software company based in Mumbai, India. It is a global programming community which hosts online contests, trainings and events for programmers from around the world.
Sphere online judge (SPOJ)
Sphere online judge is one of the earliest competitions, with support for more than 40 programming languages and compilers. The SPOJ platform has been created around an online judge system, which serves for the automatic assessment of user-submitted programs.
CodingBat
CodingBat is a live coding site, which offers problems to build coding skills in Java and Python. The problems here provide instant feedback which also works as a brilliant platform for the coders to practice and grasp the basics of programming.
Google Code Jam
Google Code Jam is an annual programming competition sponsored and supported by Google itself. Here, professional and student programmers provided complex algorithmic challenges to solve using the programming language of their choice in a limited amount of time.
Dream in Code
Dream In Code (DIC) is a online community for programmers and web developers. Members have free access to thousands of programming tutorials, code snippets, forum topics and more.
Codeforces
Codeforces is an online programming platform where you can practice variety of problems and submit competitive ones and compete on problems submitted by other users.
UVa Online Judge
This online coding site is maintained by University of Valladolid, Spain. Here you can find problems from past programming contests such as the ACM International Programming Contest and also one can submit their own source codes in a variety of languages.
Python Challenge
Focused on the Python programming language, Python Challenge is a series of programming challenges. Although any language could be used to solve the puzzles, many of the clues are easier to decipher if you’re working in Python.
Facebook Puzzles
As the name suggests this small set of programming problems is conducted by Facebook to evaluate potential hires. One can submit their solutions in a variety of languages like C++, C, Haskell, Java, Perl, PHP, Python, or Ruby.
ACM-ICPC
ACM – ICPC is one of the world’s largest programming contest conducted annually. The contest is basically sponsored by IBM for teams of students. The contests majorly involves algorithmic programming problems. Regional contests lead to World level Finals. Supports only two languages i.e. C/C++ and Java.
Timus Online Judge
An online competition site that automatically checks your submissions. Supports Java, C#, Pascal, C and C++.
USA Computing Olympiad
Programming puzzles designed to provide "pre-college students with opportunities to sharpen their computer programming skills". The puzzles are still interesting and fun even if you've got a CS degree!
Java Bat
A site dedicated to practical Java programming problems. You can type your code directly into the website, and it'll tell you if you've solve the problem correctly or not.
Informatics Olympiad
A British version of the computing olympiad. Again aimed at school and college students, but fun and interesting for everyone.
Programming Challenges in C, C++ and C#
About.com's C/C++/C# section regularly posts interesting programming puzzles. Successful solutions get acknowledged on the site once the deadline has passed.
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