Can you invert a binary tree over its vertical axis? This is a famous problem made popular by this tweet: Google: 90% of our engineers use the software you wrote (Homebrew), but you can’t invert a binary tree on a whiteboard so fuck off.— Max Howell (@mxcl) June 10, 2015 — Try to solve this problem at https://algodaily.com/challenges/invert-a-binary-tree --- Equinox by Purrple Cat | https://purrplecat.com/ Music promoted by https://www.free-stock-music.com/ Creative Commons Attribution-ShareAlike 3.0 Unported https://creativecommons.org/licenses/by-sa/3.0/deed.en_US