How to find height or maximum depth of binary of binary tree ?

1.54K viewsProgrammingalgorithms binarytree depth height max

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.

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