indapa has asked for the wisdom of the Perl Monks concerning the following question:
Hi,
I'm sure this question has been asked before, but I can't seem to find an answer using super search...
I have a file which is 22 columns delimited by a tab. I want to sort it first by column 9, then by column 22. I'm not sure how to proceed in modifying the Schwartzian transform to accomplish this. This is what I have, but it doesn't seem to be working:
@sortedarry = map { $_ ->[0] } sort { $a->2 <=> $b->2 } sort { $a->[1] cmp $b->[1] } map { my @cols = split /\t/; [$_, $cols[9], $cols[22] ]; } @foo; print "$_\n" foreach @sortedarry;
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Replies are listed 'Best First'. | |
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Re: schwartzian transform and sorting on two columns
by borisz (Canon) on Sep 07, 2005 at 20:54 UTC | |
Re: schwartzian transform and sorting on two columns
by ikegami (Patriarch) on Sep 07, 2005 at 21:55 UTC | |
Re: schwartzian transform and sorting on two columns
by BUU (Prior) on Sep 07, 2005 at 20:54 UTC | |
by thor (Priest) on Sep 08, 2005 at 13:19 UTC | |
Re: schwartzian transform and sorting on two columns
by salva (Canon) on Sep 08, 2005 at 08:07 UTC |
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