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HackerRank is a company that focuses on competitive programming challenges for both consumers and businesses and has an online community of over one million computer programmers.〔(【引用サイトリンク】title=HackerRank works with Oracle Taleo, Greenhouse, Jobvite for technical interviews - Business Insider )〕 HackerRank's programming challenges can be solved in a variety of programming languages (including, but not limited to, Java, C++, PHP, SQL) and span multiple computer science domains. On the consumer side, when a programmer submits a solution to a programming challenge, their submission is scored on the accuracy of their output and the execution time of their solution. Programmers are then ranked globally on the HackerRank leaderboard and earn badges based on their accomplishments to drive competition among users. In addition to individual programming challenges, HackerRank also hosts contests (often referred to by HackerRank as "CodeSprints") where users compete on the same programming challenges during a set period of time and are then ranked at the conclusion of the event. HackerRank is seen as a market leader in the growing gamification trend within competitive computer programming 〔(【引用サイトリンク】title=HackerRank 'gamifies' technical job recruiting for game companies (exclusive) - GamesBeat - Games - by Dean Takahashi )〕 and the consumer-side of their website is free for coders to use. == Computer Science Domains on HackerRank == In addition to supporting a variety of popular (and some obscure) programming languages, HackerRank categorizes most of their programming challenges into a number of core Computer Science domains,〔(【引用サイトリンク】title=Ready, set, go! MassDiGI and HackerRank announce CodeSprint – 2/20/15 - MassDiGI )〕 including: * Artificial Intelligence: involves developing AI bots and using them against others. * Algorithms: Traditional algorithmic challenges. * Functional Programming: use functional programming abstractions to solve challenges. * Machine Learning: use predictive modeling and analysis to solve challenges. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「HackerRank」の詳細全文を読む スポンサード リンク
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