# 1508. Range Sum of Sorted Subarray Sums

<https://leetcode.com/problems/range-sum-of-sorted-subarray-sums>

## Description

You are given the array `nums` consisting of `n` positive integers. You computed the sum of all non-empty continuous subarrays from the array and then sorted them in non-decreasing order, creating a new array of `n * (n + 1) / 2` numbers.

*Return the sum of the numbers from index* `left` *to index* `right` (**indexed from 1**)*, inclusive, in the new array.* Since the answer can be a huge number return it modulo `109 + 7`.

**Example 1:**

```
**Input:** nums = [1,2,3,4], n = 4, left = 1, right = 5
**Output:** 13 
**Explanation:** All subarray sums are 1, 3, 6, 10, 2, 5, 9, 3, 7, 4. After sorting them in non-decreasing order we have the new array [1, 2, 3, 3, 4, 5, 6, 7, 9, 10]. The sum of the numbers from index le = 1 to ri = 5 is 1 + 2 + 3 + 3 + 4 = 13. 
```

**Example 2:**

```
**Input:** nums = [1,2,3,4], n = 4, left = 3, right = 4
**Output:** 6
**Explanation:** The given array is the same as example 1. We have the new array [1, 2, 3, 3, 4, 5, 6, 7, 9, 10]. The sum of the numbers from index le = 3 to ri = 4 is 3 + 3 = 6.
```

**Example 3:**

```
**Input:** nums = [1,2,3,4], n = 4, left = 1, right = 10
**Output:** 50
```

**Constraints:**

* `n == nums.length`
* `1 <= nums.length <= 1000`
* `1 <= nums[i] <= 100`
* `1 <= left <= right <= n * (n + 1) / 2`

## ac

```java
```