I've been doing web development for a long time, and I've never had to do anything like btree reversal in a web development context. It's probably not even tha

I've been doing web development for a long time, and I've never had to do anything like btree reversal in a web development context. It's probably not even that hard, but I doubt I'd be able to improvise a solution in an interview setting that's nothing like a real work environment. (Memories of trying to work out some kind of graph traversal while someone was basically just staring at me.) It seems to me that people who are doing this kind of work behind the scenes of a web app aren't really doing web development.