LeetCode içerisinde bulunan “Maximum Depth of Binary Tree” sorusunun açıklaması ve çözümü. Bu soruda sizi verilen bir binary tree içerisinde, root node‘undan en uzaktaki leaf node‘una olan uzaklığı bulmanız isteniyor.

► LeetCode 104. Maximum Depth of Binary Tree: https://leetcode.com/problems/maximum-depth-of-binary-tree/

► Problem açıklaması:

Given the root of a binary tree, return its maximum depth.

A binary tree’s maximum depth is the number of nodes along the longest path from the root node down to the farthest leaf node.

Example 1:

Input: root = [3,9,20,null,null,15,7]

Output: 3

Example 2:

Input: root = [1,null,2]

Output: 2

Example 3:

Input: root = []

Output: 0

Example 4:

Input: root = [0]

Output: 1

Constraints:

The number of nodes in the tree is in the range [0, 10^4].

-100 <= Node.val <= 100