One Pattern, Two Classics | Diameter Of A Binary Tree & Maximum Path Sum | LeetCode 543 & 124

In this video we visually walk through both LeetCode 543 (Diameter of Binary Tree) and LeetCode 124 (Binary Tree Maximum Path Sum), and show how the exact same DFS recursion solves both — with a small twist that turns one into the other. You'll learn: ✦ Why a "best path through a node" recursion works for both problems ✦ The single change that converts Diameter into Max Path Sum ✦ How to handle negative values in LC 124 correctly ✦ Time & space complexity for both — O(n) time, O(h) space 🔗 Problems: • LeetCode 543: https://leetcode.com/problems/diamete... • LeetCode 124: https://leetcode.com/problems/binary-... 📚 Chapters: 0:00 — Two problems, same DNA 0:18 — Problem 1: Diameter of Binary Tree 0:53 — Building the intuition 1:58 — The recursive solution 3:31 — Problem 2: Binary Tree Maximum Path Sum 5:32 — One twist, hard problem solved 6:17 — Time & space complexity If this helped you finally connect these two — like the video, subscribe to the channel for more visual algorithm explainers, and drop a comment if you'd like to see a specific problem broken down next. #codinginterview #programming #leetcode #neetcode #recursion #datastructures #algorithms #binarytree #abdulbari Also: 1. maximum diameter of binary tree leetcode 2. max diameter of a binary tree 3. binary tree maximum path sum 4. binary tree maximum path sum leetcode 5. binary tree maximum path sum python 6. max path sum in a binary tree