LeetCode 112: Path Sum (Root-to-Leaf DFS) | DSA Binary Tree Series скачать в хорошем качестве

LeetCode 112: Path Sum (Root-to-Leaf DFS) | DSA Binary Tree Series

📢 Telegram (Discussion | Notes | Daily Quizzes): 👉 https://t.me/algoxploration_hub 🤝 Join the DSA Community Ask doubts, participate in quizzes, and stay consistent with DSA practice. In this video, we solve the classic Path Sum problem in a Binary Tree. The goal is to determine whether there exists a root-to-leaf path such that the sum of node values along the path equals a given target sum. I explain the recursive DFS approach step-by-step so you clearly understand: What a root-to-leaf path means How to subtract the current node’s value from the target sum The base case when we reach a leaf node How recursion explores left and right subtrees How to return true as soon as a valid path is found Complete dry run with an example tree This problem is very important for strengthening your understanding of tree recursion, DFS, and backtracking-style thinking in binary trees. Time Complexity: O(n) Space Complexity: O(h), where h is the height of the tree (recursion stack) 👉 Solution: Pinned in the comments If you’re serious about learning Data Structures & Algorithms the right way, you’re in the right place. On AlgoXploration, I focus on: Building strong DSA fundamentals Solving problems step by step Explaining why a solution works, not just how Helping you stay consistent with practice 📚 DSA Playlists (Structured Order) ▶️ DSA Problems:    • DSA Problems   ▶️ Queue:    • Queue Problem Solving Series   ▶️ Stack:    • Stack Problem Solving Series   ▶️ Linked List:    • LinkedList Problem Solving Series   ▶️ Binary Search:    • Binary Search Problem Solving Series   ▶️ Recursion:    • Recursion Problem Solving Series   ▶️ Hashing:    • Hashing Problem Solving Series   ▶️ Bit Manipulation: https://www.youtube.com/playlist?list... ▶️ Two Pointer Technique:    • Two Pointers Problem Solving Series   ▶️ Arrays:    • Array Problem Solving Series   ▶️ Sorting:    • Sorting Series   👨‍💻 Coding Profiles 💻 LeetCode: https://leetcode.com/u/sameervhatkar/ 💻 GitHub: https://github.com/sameervhatkar 🔗 Let’s Connect If you’d like to connect professionally, I’m available on LinkedIn as well: 👉   / sameer-vhatkar   Learn DSA the right way — one concept at a time. 🚀 ┏┓┳┳┳┓┏┓┏┓┳┓┳┳┓┏┓ ┗┓┃┃┣┫┗┓┃ ┣┫┃┣┫┣ ┗┛┗┛┻┛┗┛┗┛┛┗┻┻┛┗┛ ┏┓┓ ┏┓┏┓┏┓┏┓┏┓┓ ┏┓┳┓┏┓┏┳┓┳┏┓┳┓ ┣┫┃ ┃┓┃┃ ┃┃ ┃┃┃ ┃┃┣┫┣┫ ┃ ┃┃┃┃┃ ┛┗┗ ┗┛┗┛┗┛┗┛┣┛┗ ┗┛┛┗┛┗ ┻ ┻┗┛┛┗