Join over 5 million developers in solving code challenges on hackerrank one of the best ways to prepare for programming interviews. All the hackerrank unit tests happen to fit this criteria by pure coincidence cf addendum originally we put this simple question at the beginning of a test for warm up we received that answer from a candidate in our first batch of applicants. The coding tests in hackerrank are very difficult and have been the best way that we have found to screen the suitable candidates on deep technical skills it helps to eliminate first couple of tech interviews. Hackerrank is an online coding platform it provides coding tests and questions for companies to screen candidates we remember the first time we had to do a test before joining the company unsure what were the expectations
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