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Re: How to sort data in the input file ?

by fmerges (Chaplain)
on Feb 08, 2007 at 21:45 UTC ( [id://599159]=note: print w/replies, xml ) Need Help??

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in reply to How to sort data in the input file ?

Hi,

One solution could be:

my @sorted_lines
    = map { $_->[1] }
      sort { $a->[0] <=> $b->[0] }
      map { [(substr $_,2,8) => $_] }
      <DATA>;

__DATA__
1&20070102&string3&string4....
2&20070101&string3&string4....
3&20061212&&string3&string4....

[download]

If your files are really big, then you could try another approach...

Regards,

fmerges at irc.freenode.net

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