和为s的连续正数序列

 1 # -*- coding:utf-8 -*-
 2 class Solution:
 3     def FindContinuousSequence(self, tsum):
 4         # write code here
 5         res = []
 6         if tsum<=2:#2及2以下不存在
 7             return res 
 8         small = 1
 9         big = 2
10         while small < big: 
11             lst = []
12             #for i in range(small,big+1,1):
13                 #lst.append(i)
14             lst = [i for i in range(small,big+1,1)] #简写方式
15             if sum(lst)> tsum:
16                 small +=1
17             elif sum(lst)< tsum:
18                 big +=1
19             else:
20                 res.append(lst)
21                 small += 1
22                 big += 1         
23         return res   
24