First off, why are you doing two sorts? Sorts are pretty damn expensive (or so I'm told). Especially in this case, I would imagine, since hash lookups on anagrams (act, atc, cat, cta, tat, tca) are particularly slow. Being timestamps they are restricted to a 10 character set, and most likely be all of the same length, thusly ensuring that a portion of a decent sized will be anagrams. 
($j, $l) = (sort keys %master)[0,-1];

[download]
Second 
#Might go with a C-style for-loop here.
while($j <= $l){
 for my $elem (qw(CCMT ...)){
  $out .= "," . ($master{$j}{$elem} || '0');
 }
 $j+=60;
}

[download]

--
perl -pe "s/\b;([mnst])/'\1/mg"

In reply to Re: Golf, Anyone? Stupid output questions by belg4mit
in thread Golf, Anyone? Stupid output questions by Anonymous Monk

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