... it handles 0s in numbers correctly 
a(100)

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There are many such cases, though I misstated the problem somewhat. It isn't so much zeroed digits, as intermediate two-digit results. So far, all the solutions in this thread (except my own :) fail on many three-digit numbers.

Also, in Golf, it may be ok to violate strict, but your subroutine should be re-runnable (ie. $i should be reset somewhere). 

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

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

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