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by proksoup 3338 days ago
I was asking for a function that converted a number (auto incremented id) to a string, such that all possible shortest urls would be iterated through.

E.g. given character set a-z, 0: a 1: b 26: aa 27: ab

etc.

I probably had no idea what the interviewee was suggesting and tried and failed to explain my question any better.