Add Two Numbers Problem

Add Two Numbers Problem — ExecCode Easy DSA Practice

Solve the Add Two Numbers problem on ExecCode. Free online easy DSA practice in Linked List. Write and run code in Java, C++, Python — no signup required to run.

Problem description

You are given two non-empty linked lists representing two non-negative integers. The digits are stored in reverse order. Add the two numbers and return the sum as a linked list.

Examples

Input l1 = [2, 4, 3], l2 = [5, 6, 4]; Output [7, 0, 8]. Input l1 = [0], l2 = [0]; Output [0]. Input l1 = [9, 9, 9, 9, 9, 9, 9], l2 = [9, 9, 9, 9]; Output [8, 9, 9, 9, 0, 0, 0, 1]

Constraints

Each list has 1–100 nodes 0 ≤ Node.val ≤ 9

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