Find the max key in a binary tree

A binary tree is a data structure that consists of nodes, where each node can have at most two children nodes: a left child and a right child. Each node also contains a key, which can be any value, and these keys can be compared to each other to determine their relative order. The maximum key in a binary tree is the largest key that is present in any node of the tree.

Recursive solution

To find the maximum key in a binary tree, we can use a recursive algorithm. The basic idea is to start at the root of the tree, and then recursively check the maximum key in the left subtree and the maximum key in the right subtree. We can then compare these two values to the key at the root, and return the maximum of the three.

Here given code implementation process.

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Iterative solution

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