Floor and Ceil in a Binary Search Tree

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You are given the root of a **Binary Search Tree (BST)** and an integer value **key**. Your task is to find: * **Floor value:** The node value in the BST that is the **largest value less than or equal to** the given key. * **Ceil value:** The node value in the BST that is the **smallest value greater than or equal to** the given key. If either the floor or the ceil value does not exist in the tr

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solution.cppC++17

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