Re: Re: Re: Re: (Golf) Kaprekar's Process

[MeowChow]

That's what the sprintf is there for. It formats a two-digit result into a three-digit string, eg. 099. After sorting and reversal, you get 990 - 099.

   MeowChow                                   
               s aamecha.s a..a\u$&owag.print

[srawls]

Ok, I get it. I can modify yours than, and improve it by two chars:

sub a {
$_=pop;s/^..$/0$&/;/495/?0:1+a(-($_=join'',sort/./g)+reverse)
}

The 15 year old, freshman programmer,
Stephen Rawls