Your map statement is working fine. The problem is that you have assigned a value to "$,", which is the output field separator variable. Its value is printed when you use a comma in a print statement. 
$,="bar";
print "foo","baz";

[download]
will output:
foobarbaz
--sean

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

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