Ugly. Encapsulate code in functions with clear names.

I had wrongly assumed that the line that you mentioned constituted three operations.

Thanks for that very fast response Chrono79!

Choosing the index of a digit in the number, remove this digit at that index and insert it back to another place in the number.

That, exactly.

Hi all,

What does the kata mean by saying that "You can do at most one operation"? What comprises "one operation"?

Thank you for any response.