LeetCode 2: Add Two Numbers (Recursion + Linked List) | Java Explanation | DSA Interview Series

🎯 LeetCode Problem 2 – Add Two Numbers | Linked List Explained with Code In this video, we solve LeetCode 2: Add Two Numbers, a Medium-level Linked List problem. We’ll break down the logic step by step — from problem statement to dry run and coding in Java / C++ / Python. 💡 Problem Description You are given two non-empty linked lists representing two non-negative integers. The digits are stored in reverse order, and each of their nodes contains a single digit. Add the two numbers and return the sum as a linked list. You may assume the two numbers do not contain any leading zero, except the number 0 itself. 📘 Example 1 Input: l1 = [2,4,3], l2 = [5,6,4] Output: [7,0,8] Explanation: 342 + 465 = 807 📘 Example 2 Input: l1 = [0], l2 = [0] Output: [0] 📘 Example 3 Input: l1 = [9,9,9,9,9,9,9], l2 = [9,9,9,9] Output: [8,9,9,9,0,0,0,1] ⚙️ Constraints Number of nodes in each linked list: [1, 100] Node value range: 0 ≤ Node.val ≤ 9 No leading zeros except for the number 0 itself 📚 Topics Covered: Linked List | Addition | Carry Propagation | Data Structures | LeetCode Medium Problems 🔥 Tags / Hashtags: #LeetCode #LeetCodeSolutions #AddTwoNumbers #LinkedList #DataStructures #CodingInterview #Java #CPlusPlus #Python #DSA #CodingTutorial #Algorithms #LeetCodeProblem2 🌟 Dear all, Welcome to the Galaxy of Codes! 🌌 On this channel, we explore Coding, Development, Placements, and Trading Tools — simplifying complex concepts for learners, job-seekers, and aspiring professionals. Whether you’re here for DSA & Algorithms, Programming Languages (Java, C++, Python, Kotlin, Dart, JavaScript, TypeScript, etc.), or Stock Market & Trading Tools, you’ll always find something valuable to sharpen your skills 🚀 ✨ What You’ll Learn Here DSA & Coding Concepts (from basics to advanced) Programming Languages (Java, C++, Python, Kotlin, Dart, JS, TS) Development Skills (Web Apps, Flutter, Next.js, React.js) Interview & Placement Preparation Trading & Finance Tools for smart investing 🎓 Who is this for? Beginners in CSE, IT, BCA, MCA Students preparing for placements & coding interviews Developers building skills in Java, C++, Python, Kotlin, Dart, JavaScript, TypeScript Enthusiasts exploring Stock Markets & Trading Tools Anyone who wants to code smarter & trade smarter 💡 Tip for Success: 👉 “The more you practice, the better you become.” Keep coding, solving problems, and building your foundation strong! 📌 Resources & My Work 🔗 GitHub Codes: https://github.com/farhaddubey 🌐 Connect With Me LinkedIn: linkedin.com/in/farhaddubey Instagram: instagram.com/farhaddubey GitHub: github.com/farhaddubey X (Twitter): x.com/farhaddubey 📌 Tags DSA in Java, C++, Python, Kotlin, Dart, JavaScript, TypeScript Coding interview preparation Crack tech interviews Learn coding from scratch Software engineering interviews Placement prep Web & App Development React.js, Next.js, Flutter apps Trading tools explained Stock market basics Tech + Finance + Coding DSA crash course Competitive programming Code smarter, trade smarter #LeetCode #LeetCode2 #AddTwoNumbers #Recursion #LinkedList #DSA #CodingInterview #JavaDSA #C++DSA #FAANG #CodingForPlacements #DSACrashCourse #Algorithms #DataStructures #Programming #EverythingForOPtimized #GalaxyOfCodes