Leetcode 1123. Lowest Common Ancestor of Deepest Leaves | BFS | DFS | Optimized Solution | Python

In this video, we will solve Leetcode 1123: Lowest Common Ancestor of Deepest Leaves using a recursive approach in Python. The problem requires us to find the lowest common ancestor (LCA) of the deepest leaves in a binary tree. We’ll use depth-first search (DFS) and recursion to traverse the tree while keeping track of the height of each subtree. The algorithm compares the left and right depths of nodes and determines the common ancestor of the deepest leaves. We'll also discuss how to implement efficient binary tree traversal and improve the performance by optimizing space complexity and time complexity. Understanding how to find the LCA of deepest leaves in a tree is crucial for solving binary tree problems in coding interviews. In this solution, we focus on recursive tree solutions and show how to efficiently traverse a binary tree, keeping track of depths. The approach provides deep insights into tree-related challenges and helps in mastering binary tree algorithms. This solution uses recursion and tree properties to solve the problem with clarity, and it can be applied to various tree problems in both coding interviews and competitive programming. Keywords Leetcode 1123 Lowest Common Ancestor Deepest Leaves LCA of Deepest Leaves Binary Tree Python Tree Problems Tree Traversal Depth-First Search DFS Tree Traversal Recursive Tree Solution Binary Tree Algorithms Leetcode Python Solutions Binary Tree Depth TreeNode LCA Binary Tree LCA Binary Tree Problem Python Recursive Solution Recursive Binary Tree Time Complexity Space Complexity Optimal Solution Tree Problem Solutions Coding Interview Problems Tree Depth Algorithm Python DFS Solution Find LCA in Tree Deepest Leaves LCA Python TreeNode Binary Tree Questions Binary Tree LCA Solution Tree Traversal in Python Recursive DFS Solution Leetcode Tree Challenges Binary Tree Recursion Interview Tree Problems Leetcode Deepest Leaves Python Binary Tree Algorithms Tree Depth-First Search Efficient LCA Solution Leetcode Solution in Python Lowest Common Ancestor Algorithm Tree Solution Optimization Python Binary Tree Depth Binary Tree Recursion Leetcode Binary Tree LCA Problem in Trees Coding Interview Tree Problem Deepest Leaves Problem Leetcode Deepest Leaves Solution Efficient Tree Traversal Binary Tree LCA Python TreeNode Python Solution Recursive TreeNode Solution Tree Depth Calculation Leetcode DFS Algorithm Tree Problem Explanation TreeNode Explanation LCA Recursive Approach Binary Tree Optimization Python Tree Algorithms LCA in Binary Tree Recursive Binary Tree Problem Deepest Leaves Algorithm Leetcode Coding Challenges Interview Tree Solution Python Tree Depth Algorithm Tree Optimization Solutions Binary Tree LCA Recursion Efficient Recursive Solution LCA Tree Problems Binary Tree DFS Python LCA of Deepest Leaves Explanation Tree Depth Recursive Solution Leetcode Solution Walkthrough Leetcode Binary Tree Solution Python Tree Problems Explained Binary Tree Solution Discussion Recursive Tree Algorithms Tree DFS Recursive Solution Python Binary Tree Solutions Binary Tree Depth First Search Binary Tree Nodes and Depth Binary Tree LCA Algorithm Tree Problem Interview Solutions Efficient Binary Tree Traversal Python Tree Depth Search LCA in Python Recursive Tree Problem Solution Tree LCA Approach Python Recursive Binary Tree Leetcode Recursion Problems Coding Problems Binary Tree Leetcode Deepest Leaves Algorithm Deepest Leaves Recursion Binary Tree Solution Tutorial Tree Traversal Python DFS Binary Tree Solutions for Interviews Python TreeNode LCA Solution Tree Algorithm Recursion Python Tree Coding Challenge Recursive Approach to Binary Tree Deepest Leaves Recursion Solution Depth of Binary Tree Binary Tree LCA Walkthrough Tree Problems Interview Questions Python Tree Traversal DFS LCA Tree Algorithms for Coding Interviews Leetcode Binary Tree DFS Deepest Leaves LCA Problem Recursive LCA Solution Explained Binary Tree LCA Interview Solution Leetcode TreeNode Algorithms Tree Recursion Problems Leetcode Binary Tree Walkthrough Python Tree Solutions Walkthrough Efficient Leetcode Tree Solutions Interview Questions on Binary Trees Leetcode Tree Problem Solution Tree LCA Depth First Search Recursive Python Tree Solutions