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Solution: Lowest Common Ancestor of a Binary Tree

Explore the process of identifying the lowest common ancestor of two nodes in a binary tree. This lesson guides you through a depth-first search approach, explains recursive traversal, and helps you understand how to determine the ancestor efficiently by tracking nodes. You'll gain insights into the algorithm's time and space complexities, enhancing your problem-solving skills with tree data structures.

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Statement

Given the root node of a binary tree with nn nodes, your task is to find the lowest common ancestor of two of its nodes, p and q.

Note: The lowest common ancestor of two nodes, p and q, is defined as the lowest node in the binary tree that has both p and q as descendants.

A node can also be a descendant of itself. For example, if q is a descendant of p, and we know that p is a descendant of itself, then p will be the lowest common ancestor of p and q.

Constraints:

  • 2≤n≤5002 \leq n \leq 500
  • All Node.data are unique.
  • p
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