mediumNeetCode 150
Add Two Numbers
Add two numbers represented by linked lists in reverse order Example: [2,4,3], [5,6,4] => [7,0,8] (342 + 465 = 807)
Digits arrive reversed, which is exactly the order arithmetic wants. I carry across nodes, then do the same for subtract and multiply.
Linked ListMath & Geometry

Meet Coco
Coco is an AI study partner, not a person. She listens while you explain your code, asks what a line does and never hands you the fix. Sign in free to type with Coco, up to a daily limit, and to talk with her for one hour. After that, talking comes with the $79 pack. Anyone can open the editor and run their code.
1Add Two Numbersmedium
2Part 2
3Part 3
Each locked part opens in the editor once the part before it passes.
Based onLeetCode
Prep guides that list this problem
Our company tags come from public interview write-ups. None of these is a confirmed question.