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Grokking the Coding Interview Patterns in Python

Inorder Successor in BST

Explore how to determine the inorder successor of a given node in a binary search tree. Learn to identify the node with the smallest value greater than the target, understand the constraints involved, and implement your solution. This lesson deepens your understanding of tree depth-first search techniques within coding interviews.

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Statement

You are given the root node of a binary search tree and a specific node p. Your task is to return the inorder successor of this p node. If there is no inorder successor of the given node, return NULL.

Note: The inorder successor of p is the node with the smallest value greater than p.data in the binary search tree.

Constraints:

  • The tree contains nodes in the range ...