Day 1 of June LeetCode Challenge
1 min readJun 1, 2020
Invert a binary tree.
Example:
Input:
4
/ \
2 7
/ \ / \
1 3 6 9Output:
4
/ \
7 2
/ \ / \
9 6 3 1
Invert a binary tree.
Example:
Input:
4
/ \
2 7
/ \ / \
1 3 6 9Output:
4
/ \
7 2
/ \ / \
9 6 3 1