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Add Two Numbers II.py
48 lines (44 loc) · 1.11 KB
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Add Two Numbers II.py
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# Definition for singly-linked list.
# class ListNode(object):
# def __init__(self, x):
# self.val = x
# self.next = None
class Solution(object):
def addTwoNumbers(self, l1, l2):
"""
:type l1: ListNode
:type l2: ListNode
:rtype: ListNode
"""
s1 = self.getSize(l1)
s2 = self.getSize(l2)
s = max(s1, s2)
p = h = ListNode(0)
while s:
p.next = ListNode(0)
p = p.next
if s <= s1:
p.val += l1.val
l1 = l1.next
if s <= s2:
p.val += l2.val
l2 = l2.next
s -= 1
p = h
while p:
q = p.next
while q and q.val == 9:
q = q.next
if q and q.val > 9:
while p != q:
p.val += 1
p = p.next
p.val -= 10
else: p = q
return h if h.val else h.next
def getSize(self, h):
c = 0
while h:
c += 1
h = h.next
return c