Two Sum

题目:https://leetcode.com/problems/two-sum/

class Solution(object):
def twoSum(self, nums, target):
map = {}
for index, value in enumerate(nums):
if target - value in map:
return [map[target - value] + 1, index + 1]
map[value] = index

Add Two Numbers

题目:https://leetcode.com/problems/add-two-numbers/

# 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
"""
flag = 0
head = ListNode(0)
pos = head
while l1 is not None and l2 is not None:
l3 = ListNode(l1.val + l2.val + flag)
flag = 0
if l3.val >= 10:
l3.val -= 10
flag = 1
l1 = l1.next
l2 = l2.next
pos.next = l3
pos = pos.next
while l1 is not None:
l3 = ListNode(l1.val + flag)
flag = 0
if l3.val >= 10:
l3.val -= 10
flag = 1
l1 = l1.next
pos.next = l3
pos = pos.next
while l2 is not None:
l3 = ListNode(l2.val + flag)
flag = 0
if l3.val >= 10:
l3.val -= 10
flag = 1
l2 = l2.next
pos.next = l3
pos = pos.next
if flag == 1:
l3 = ListNode(1)
pos.next = l3
return head.next

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