LeetCode 75 C++ | Step-by-Step Solutions (LAN Academy) - Lowest Common Ancestor in C++ | LeetCode 236 Explained Step-by-Step (DFS Tree Logic)

In this video, we solve LeetCode 236 – Lowest Common Ancestor of a Binary Tree using C++ and a clean recursive DFS approach. This is one of the most essential binary tree problems for technical interviews — understanding it unlocks dozens of related tree challenges. You’ll learn: 🔹 How to find the lowest common ancestor efficiently using recursion 🔹 How DFS helps track both nodes simultaneously 🔹 How to write a clear, optimized, and reusable C++ solution Time complexity: O(n) Space complexity: O(h), where h is the tree height 🎥 Watch now and master one of the most fundamental binary tree problems! Follow LAN Academy: 🌐 lanacademy-school.thinkific.com 📺 YouTube: @lanacademy9521 🐦 Twitter: x.com/SolutionsLan #LeetCode #Cplusplus #Programming #DFS #BinaryTree #LANAcademy #CodingInterview #Algorithms @reper #foryou #viral #reper #urmaritori #for