5 ms·
This reads a lot like "Invert a binary tree on a whiteboard" to me.
by maxk42 5y ago
This reads a lot like "Invert a binary tree on a whiteboard" to me.
- MrFoof 5y agoHey now, let's not give anyone any ideas. Lest we all now have to do that in ninety seconds, with our non-dominant hand.
- J5892 5y agodraw binary tree flip whiteboard upside down
- dan-robertson 5y agoI think you actually need a mirror to invert the tree.
- dylan604 5y agojust use the selfie camera