# Amazon Online Assessment (OA) - Items in Containers

A librarian would like to count the number of enclosed items in row that are between two dividers. A row is represented by a string `s`

, each item is a `*`

, and a divider is represented as `|`

. A list of range tuples are given that represent each substring to consider, and the number of enclosed items for each substring must be returned in a list.

`* = ascii number 42`

`| = ascii number 124`

#### Example 1:

#### Input: `s = |**|*|*`

, `ranges = [[0, 4], [1, 6]]`

#### Output: `[2, 3]`

#### Explanation:

The first range to consider is `[0, 4]`

which corresponds to `|**|*`

. There are 2 items in the first enclosed part.

For the second range, `[1, 6]`

, the substring is `**|*|*`

, which contain only one enclosed part with one item inside it.

Both of the answers are returned in an array, ie. `[2, 1]`

.

#### Example 2:

#### Input: `s = *|*|`

, `ranges = [[1, 3]]`

#### Output: `[1]`

#### Explanation:

The substring from `index = 1`

to `index = 3`

is `|*|`

. There is only one item and it is surrounded by two dividers. Therefore, the output is `[1]`

.

#### Constraints:

- There are no invalid characters, and each range is non-zero in size and always increasing. The ranges provided are always within the string bounds.