Maximum Depth of Binary Tree
Given the root of a binary tree, return its maximum depth.

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Maximum Depth of Binary Tree
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Given the root of a binary tree, return its maximum depth.

Example 1:
Input: {"root":[3,9,20,null,null,15,7]}
Output: 3
Constraints:

  • The number of nodes is in the range [0,104][0, 10^4].

  • −100≤Node.val≤100-100 \leq \text{Node.val} \leq 100

Input
arr ={"root":[3,9,20,null,null,15,7]}
Depth
1
Max Depth
0

3

9

20

15

7

Variables
No variables to display
DepthFunction Call
Stack empty
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