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0002_Add_Two_Numbers.py

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0002_Add_Two_Numbers.py

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class Solution:

def addTwoNumbers(self, l1, l2 ,c = 0):

val = l1.val + l2.val + c

c = val // 10

ret = ListNode(val % 10 )

if (l1.next != None or l2.next != None or c != 0):

if l1.next == None:

l1.next = ListNode(0)

if l2.next == None:

l2.next = ListNode(0)

ret.next = self.addTwoNumbers(l1.next,l2.next,c)

return ret