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002_Add_Two_Numbers.py
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002_Add_Two_Numbers.py
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#Definition for singly-linked list
class ListNode(object):
def __init__(self, x):
self.val = x
self.next = None
class ListNode_handle:
def __init__(self):
self.cur_node = None
def add(self, data):
#add a new node pointed to previous node
node = ListNode(data)
node.next = self.cur_node
self.cur_node = node
return node
def print_ListNode(self, node):
while node:
print('\nvalue:', node.val)
node = node.next
class Solution:
def addTwoNumbers(l1, l2):
dummy = cur = ListNode(0)
carry = 0
while l1 or l2 or carry:
if l1:
carry += l1.val
l1 = l1.next
if l2:
carry += l2.val
l2 = l2.next
cur.next = ListNode(carry%10)
cur = cur.next
carry //= 10
return dummy.next
if __name__ == "__main__":
ListNode_1, ListNode_2 = ListNode_handle(), ListNode_handle()
l1, l2 = ListNode(0), ListNode(0)
l1_list, l2_list = [3,4,2], [4,6,5]
for i in l1_list:
l1 = ListNode_1.add(i)
# l1 : 2 --> 4 --> 3
for j in l2_list:
l2 = ListNode_2.add(j)
# l2 : 5 --> 6 --> 4
result = Solution.addTwoNumbers(l1, l2)
# result: 7 --> 0 --> 8
resultList = [result.val]
while result.next:
result = result.next
resultList.append(result.val)
print(resultList)