tmp

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


# Definition for singly-linked list.
# class ListNode(object):
#     def __init__(self, x):
#         self.val = x
#         self.next = None
class ListNode(object):
    def __init__(self,x):
        self.val=x
        self.next=None
class Solution(object):
    def addTwoNumbers(self,l1,l2):
        num1=""
        num2=""
        while l1:
            num1+=str(l1.val)
            l1=l1.next
        while l2:
            num2+=str(l2.val)
            l2=l2.next
        add=str(int(num1[::-1])+int(num2[::-1]))[::-1]
        head=ListNode(add[0])
        ans=head
        for i in range(1,len(add)):
            node=ListNode(add[i])
            head.next=node
            head=head.next
        return ans

class Solution(object):
    def addTwoNumbers(self, l1, l2):
        num1  = ‘‘
        num2 = ‘‘
        answer = head
        for i in range(1, len(add)):
            node = ListNode(add[i])
            head.next = node
            head = head.next
        return answer


solu=Solution()
l1=ListNode(2)

l2=ListNode(4)
l1.next=l2

l3=ListNode(3)
l2.next=l3
l4=ListNode(5)

l5=ListNode(6)
l4.next=l5

l6=ListNode(4)
l5.next=l6
l=solu.addTwoNumbers(l1,l4)
while l:
    print l.val
    l=l.next

tmp

原文：https://www.cnblogs.com/Marigolci/p/11371790.html