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Add_Two_Numbers.py

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# Problem Link: https://leetcode.com/problems/add-two-numbers/

class Solution:

def addTwoNumbers(self, l1: ListNode, l2: ListNode) -> ListNode:

suml = self.reverse(l1) + self.reverse(l2)

head = prev = None

for x in str(suml)[::-1]:

node = ListNode(x)

if prev is not None:

prev.next = node

prev = node

if head is None:

head = prev

return head

def reverse(self, l: ListNode):

n = ''

while l is not None:

n = n + str(l.val)

l = l.next

return(int(n[::-1]))