2. Add Two Numbers
Array, Two Pointers, AMateList, Recursion, Linked List, Math ·Problem Statement
link: LeetCode.cn LeetCode 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.
Example:
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: The number of nodes in each linked list is in the range [1, 100]. 0 <= Node.val <= 9 It is guaranteed that the list represents a number that does not have leading zeros.
Solution Approach
Algorithm
Complexity
time complexity: space complexity:
Implement
class Solution:
def