I read it, tried it out and it didn't took me long to understand and solve that issue. If you hack around for a long time and you never ever felt the need or m

I read it, tried it out and it didn't took me long to understand and solve that issue. If you hack around for a long time and you never ever felt the need or motivation to understand very simple tree algorithms, okay. But don't rant when a company like google expects that from you. He also answered, after a few years on a website about it: https://www.quora.com/Whats-the-logic-behind-Google-rejecting-Max-Howell-the-author-of-Homebrew-for-not-being-able-to-invert-a-binary-tree https://www.quora.com/Whats-the-logic-behind-Google-rejectin...