[kobukuro]

No description provided.

[Copilot]

Pull Request Overview

This PR implements a solution for LeetCode problem 236 "Lowest Common Ancestor of a Binary Tree" using a recursive depth-first search approach. The solution finds the lowest common ancestor of two given nodes in a binary tree.

• Implements recursive DFS algorithm with O(N) time and space complexity
• Adds comprehensive unit tests covering multiple test cases including edge cases
• Uses proper Java coding conventions and includes complexity analysis documentation

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
src/main/java/com/leetcode/medium/LowestCommonAncestorOfABinaryTree236.java	Main solution implementation with recursive DFS algorithm and complexity analysis
src/test/java/com/leetcode/medium/LowestCommonAncestorOfABinaryTree236Test.java	Unit tests covering different scenarios including root as ancestor and sibling nodes

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}

[Copilot]

[nitpick] The explicit this. qualifier is unnecessary when calling the method on the same instance. Remove this. to follow Java conventions.

Suggested change

	TreeNode left = this.lowestCommonAncestor(root.left, p, q);
	TreeNode right = this.lowestCommonAncestor(root.right, p, q);
	TreeNode left = lowestCommonAncestor(root.left, p, q);
	TreeNode right = lowestCommonAncestor(root.right, p, q);

[Copilot]

Pull Request Overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated no new comments.

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}