Would you consider inverting a binary tree a basic question? Some may, but many developers have never inverted a binary tree in decades (because it’s something that doesn’t pop up in a normal job).
Just because it’s such a classic topic in CS, that doesn’t mean I need to remember it after decades of seeing it in uni.
Just because it’s such a classic topic in CS, that doesn’t mean I need to remember it after decades of seeing it in uni.