Solving Maximum Depth of Binary Tree in go. Please try yourself first to solve the problem and submit your implementation to LeetCode before looking into solution.

Problem Description

Given a binary tree, find its maximum depth.

The maximum depth is the number of nodes along the longest path from the root node down to the farthest leaf node.

Note: A leaf is a node with no children.


Given binary tree [3,9,20,null,null,15,7],

   / \
  9  20
    /  \
   15   7

return its depth = 3.

See the full details of the problem Maximum Depth of Binary Tree at LeetCode

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