Add Two Numbers

Input: l1 = [2,4,3], l2 = [5,6,4]
Output: [7,0,8]
Explanation: 342 + 465 = 807.
Input: l1 = [0], l2 = [0]
Output: [0]
Input: l1 = [9,9,9,9,9,9,9], l2 = [9,9,9,9]
Output: [8,9,9,9,0,0,0,1]
  • The number of nodes in each linked list is in the range [1, 100].
  • 0 <= Node.val <= 9
  • It is guaranteed that the list represents a number that does not have leading zeros.
class Solution(object):
def addTwoNumbers(self, l1, l2,carry=0):
#print(l1.val,l2.val,bool(l1),bool(l2))
val1,val2=0,0

val1=l1.val if l1 else 0
val2=l2.val if l2 else 0
carry,quotient=divmod(val1+val2+carry,10)
node=ListNode(quotient)
l1= l1.next if l1 else l1
l2= l2.next if l2 else l2
if l1 or l2 or carry:
node.next=self.addTwoNumbers(l1,l2,carry)
return node
class Solution(object):
def addTwoNumbers(self, l1, l2):
carry=0
temp=ListNode(0)
node_=temp
while l1 or l2:
if l1 ==None:
one=0
else:
one=l1.val

if l2==None:
two=0
else:
two=l2.val
inter=ListNode((one+two+carry)%10)
temp.next=inter
temp=inter
carry=(one+two+carry)//10
if l1:
l1=l1.next
if l2:
l2=l2.next
if carry!=0:
temp.next=ListNode(carry)

return node_.next

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Dhanarajappu

Dhanarajappu

Tech-Enthusiast, Coder,Explorer,Geeky,Software Engineer |A piece of code delivers everything that you need. The world is all about codes.