* add link to function description
* fix formatting for consistency
* export function so it can be imported for testing
* throw error on invalid input
* add tests for QuickSelect.js
* remove unnecessary comment
* Update Data-Structures/Array/QuickSelect.js
Co-authored-by: Rak Laptudirm <raklaptudirm@gmail.com>
Co-authored-by: Rak Laptudirm <raklaptudirm@gmail.com>