leetcode/solutions/002.Add_Two_Numbers/AC_simulation_n.py at master · illuz/leetcode · GitHub

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# Author:      illuz <iilluzen[at]gmail.com>
# File:        AC_simulation_n.py
# Create Date: 2015-02-02 20:46:14
# Descripton:  simulation


# Definition for singly-linked list.
class ListNode:
    def __init__(self, x):
        self.val = x
        self.next = None

class Solution:
    # @return a ListNode
    def addTwoNumbers(self, l1, l2):
        ret = ListNode(0)
        cur = ret

        sum = 0
        while True:
            if l1 != None:
                sum += l1.val
                l1 = l1.next
            if l2 != None:
                sum += l2.val
                l2 = l2.next

            cur.val = sum % 10
            sum /= 10
            if l1 != None or l2 != None or sum != 0:
                cur.next = ListNode(0)
                cur = cur.next
            else:
                break

        return ret


# debug
s = Solution()