2.两数相加.py

'''
Author: Catherine Xiong
Date: 2022-12-28 17:11:36
LastEditTime: 2022-12-28 17:15:22
LastEditors: Catherine Xiong
Description: 
'''
"""
Date: 2022-12-19 14:22:07
LastEditors: yhxiong
LastEditTime: 2022-12-19 14:44:11
Description: 
"""
#
# @lc app=leetcode.cn id=2 lang=python
#
# [2] 两数相加
#

# @lc code=start
# Definition for singly-linked list.
# class ListNode(object):
#     def __init__(self, val=0, next=None):
#         self.val = val
#         self.next = next
class Solution(object):
    def addTwoNumbers(self, l1, l2):
        """
        :type l1: ListNode
        :type l2: ListNode
        :rtype: ListNode
        """
        carry = 0
        root = n = ListNode(0)
        while l1 or l2 or carry:
            v1 = v2 = 0
            if l1:
                v1 = l1.val
                l1 = l1.next
            if l2:
                v2 = l2.val
                l2 = l2.next
            carry, val = divmod(v1+v2+carry, 10)
            n.next = ListNode(val)
            n = n.next
        return root.next


        
# @lc code=end