@merchantHelios @deprecated_ii Look, they do FizzBuzz at interviews for a reason.

A couple of months ago, my interview task was to find a property in some kind of a PCI ROM. They have an obscure spec with rather strange definition. The trick was: what happens if your ROM is full of zeros (a naive interpretation of the spec would make the program loop forever in that case)? What if it's full of ones? What happens if the property is at the end of page? Program workarounds to make it safe.