LeetCode 2 | Add Two Numbers | Linked List + Carry Explained | C++ Solution 🚀

In this video, we solve LeetCode Problem 2 – Add Two Numbers.

The problem gives two non-empty linked lists representing two non-negative integers where digits are stored in reverse order. Each node contains a single digit, and we need to add the two numbers and return the result as a linked list.

We simulate the same process as manual addition, digit by digit, while maintaining a carry. This is a classic Linked List + Simulation problem and is very common in coding interviews.

🔍 What you'll learn in this video

Understanding the Add Two Numbers problem

How numbers are represented using linked lists

Handling carry during addition

Building the result linked list

Clean and efficient C++ implementation

⏱ Time Complexity

O(ma(n,m)) – where n and m are the lengths of the two linked lists.

🧠 Topics Covered

Linked List

Simulation

Carry Handling

Basic Data Structures

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Видео LeetCode 2 | Add Two Numbers | Linked List + Carry Explained | C++ Solution 🚀 канала Qubit Coderz