Invert Binary Tree

#binary-tree #grind75 #grind75-week1 #leetcode #leetcode-15min #leetcode-easy

January 06, 1970

Prerequisites

To understand this note, these notes may help:

Grind75, a better Blind75 you can customize
- Leetcode discussion on Blind75 LeetCode questions
  - Memorising Leetcode by using Anki as a Scheduler

Grind75 week 1, problem 6.

This problem is easy, and is expected to take 15 mins.

https://leetcode.com/problems/invert-binary-tree