It's not new indeed, and there's been a shift from Microsoft's "How much would you charge to clean every window in Seattle?" type to Google's "Reverse a binary

It's not new indeed, and there's been a shift from Microsoft's "How much would you charge to clean every window in Seattle?" type to Google's "Reverse a binary tree" kind of questions. I could be wrong but I believe the former wasn't as ubiquitous as whiteboard algorithmic questions have become.