Solution (leetcode-in-java 1.23 API)

java.lang.Object
- g0101_0200.s0104_maximum_depth_of_binary_tree.Solution

```
public class Solution
extends Object
```
104 - Maximum Depth of Binary Tree.
Easy

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, 10⁴].
- -100 <= Node.val <= 100

- Constructor Summary
  
  Constructors
  Constructor Description
  
  Solution()
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method Description
  
  int maxDepth(TreeNode root)
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail
- Solution
```
public Solution()
```

Method Detail

maxDepth

public int maxDepth(TreeNode root)