How to Solve Add Two Numbers Problem
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Add Two Numbers
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.
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Understanding the Add Two Numbers Problem
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Problem Statement
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.
Add Two Numbers
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Examples
# Example 1
l1 = [2,4,3], l2 = [5,6,4]
[7,0,8]
# Example 2
l1 = [0], l2 = [0]
[0]
# Example 3
l1 = [9,9,9,9,9,9,9], l2 = [9,9,9,9]
[8,9,9,9,0,0,0,1]
Constraints
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Solve Add Two Numbers — You are given two non-empty linked lists representing two non-negative integers....
Here's the optimal approach using Linked List:
Time: O(n) | Space: O(n)
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