CodeFights Solves It: findSubstrings

trie data structure Uber technical interview question

The Interview Practice Task of the Week was findSubstrings. This is an Uber interview question, and their technical interviews are notoriously lengthy and difficult. And the solution implements tries, a data structure that you’ll see a lot in interview questions. It’s a double whammy! You know the drill by now: If you haven’t solved this challenge yet, hop on over to CodeFights and do it! Then come back here and we’ll walk through solving it together. We’ll start with a

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