0829. Consecutive Numbers Sum

https://leetcode.com/problems/consecutive-numbers-sum

Description

Given an integer n, return the number of ways you can write n as 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

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