Diameter Of Binary Tree All Methods

easy
Question Solve Solutions 
1. You are given a partially written function to solve.
2. You are required to complete the body of diameterOfBinaryTree function. The function is expected to return diameter of binary tree.
3. Input and Output is managed for you.

Input Format

Input is managed for you.

Output Format

Output is managed for you.

Constraints

0 <= Number of Nodes <= 10^9
-10^9 <= value of Node data <= 10^9

Notice

Try First, Check Solution later

1. You should first read the question and watch the question video.
2. Think of a solution approach, then try and submit the question on editor tab.
3. We strongly advise you to watch the solution video for prescribed approach.

Example

Input
11
1
2
4
-1
-1
5
-1
-1
3
-1
-1
Output
3
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