Day 1 of June LeetCode Challenge

Invert a binary tree.

Example:

Input:

     4
/ \
2 7
/ \ / \
1 3 6 9

Output:

     4
/ \
7 2
/ \ / \
9 6 3 1

--

--

We never really grow up, we only learn how to act in public

Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store