Loading collection data...
Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
it's a very good solution, but this approch have some issues:
what if we pass array that contain numbers less than 0 or greater than 10 !! the final result will has a logical error
so, if we will use this solution we must validate first incoming array and only use the sprintf method to build the phone number afer the validations done.