class Solution:
def addTwoNumbers(self, l1, l2):
"""
:type l1: ListNode
:type l2: ListNode
:rtype: ListNode
"""
a = l1.val + l2.val
b = a % 10
a = a // 10
ans = ListNode(b)
if l1 != None:
l1 = l1.next
if l2 != None:
l2 = l2.next
if (l1 != None) or (l2 != None) or (a != 0):
ans.next = self.add(l1, l2, a)
else:
ans.next = None
return ans
def add(self, l1, l2, aa):
"""
:type l1: ListNode
:type l2: ListNode
:type a: int
:rtype: ListNode
"""
b = self.get(l1)
c = self.get(l2)
a = b + c + aa
b = a % 10
a = a // 10
ans = ListNode(b)
if l1 != None:
l1 = l1.next
if l2 != None:
l2 = l2.next
if (l1 != None) or (l2 != None) or (a != 0):
ans.next = self.add(l1, l2, a)
else:
ans.next = None
return ans
def get(self,l):
"""
:type l: ListNode
"""
if (l == None):
return 0
else:
return l.val2. Add Two Numbers
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