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. Some other platforms worth a mention including IEEEXtreme, hackers.org, Timus Online Judge, DWITE Courtesy: Sources | ||
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