One of the worst interview experiences I have ever had, as evident by other interview reviews as well!

First round was with the engineering manager which went pretty well. Since they had reached out to me a few times I assume they were quite interested. Second round was live coding interview which was one of the least professional or useful coding interviews I have ever had in my career of a decade+. The interviewer was a software engineer, had two questions to be completed in one hour. All fair! However, they insisted that the code should fully compile and run, while clearly my answer was correct (hashmap) and I articulated every bit of the logic of the code. Mind you, the error was an obscure one, related to the internals of how Java iterates and compares objects in hashmaps. By the end of the hour we got through only the first question, and even for that to happen I had to push the interviewer to move on from random error debugging to actual knowledge of coding practices, otherwise we would not even have gotten past the first part of the first question.

Encoding and decoding a string for purposes of compression.