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)
}

[download]

The 15 year old, freshman programmer,
Stephen Rawls

In reply to Re: Re: Re: Re: Re: (Golf) Kaprekar's Process by srawls
in thread (Golf) Kaprekar's Process by srawls

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