Function allDuplicates

allDuplicates<T>(iterable: Iterable<T>): T[]
Get an array of all the duplicate elements in an iterable.

Time complexity: O(n)

Space complexity: O(n)
Type Parameters
- T
Parameters
- iterable: Iterable<T>
  The iterable to find duplicates in
Returns T[]
An array of the duplicated elements

Iterable
Example
```
allDuplicates([1, 2, 2, 2, 3]); // [2, 2]
```
Example
Using frequencyTable to get the number of times each element was duplicated
```
frequencyTable(allDuplicates([1, 2, 2, 2, 3, 3])); // Map(2) { 2 => 2, 3 => 1 }
```
See
duplicates to receive a Set of duplicate elements instead of an array (which can include the same element more than once)
- Defined in src/iterable/all-duplicates.ts:27