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Solution: Add Two Numbers

Explore how to add two non-negative integers stored in reverse order as linked lists. Understand the approach of simulating digit-by-digit addition using a carry and constructing a new linked list for the result. This lesson helps you master the algorithm with efficient time and space complexity.

Statement

You are given two non-empty linked lists, where each list represents a non-negative integer.
The digits are stored in reverse order, and each node contains exactly one digit.

Your task is to add the two integers and return the result as a linked list, also stored in reverse order. ...