README.md

829. Consecutive Numbers Sum

Given an integer n, return the number of ways you can writenas the sum of consecutive positive integers.

Example 1:

Input: n = 5 Output: 2 Explanation: 5 = 2 + 3 

Example 2:

Input: n = 9 Output: 3 Explanation: 9 = 4 + 5 = 2 + 3 + 4 

Example 3:

Input: n = 15 Output: 4 Explanation: 15 = 8 + 7 = 4 + 5 + 6 = 1 + 2 + 3 + 4 + 5 

Constraints:

• 1 <= n <= 109

Solutions (Python)

1. Solution

classSolution: defconsecutiveNumbersSum(self, n: int) ->int: ret=0forxinrange(1, int((2*n) **.5) +1): if (n+ (x-1) *x//2) %x==0and (n+ (x-1) *x//2) //x>0: ret+=1returnret