Hi - How can I modify the code below to sort and output the numerials+alpha characters at the bottom of the output.txt file I'm writing to? See example output below of what I require. Code is slopppy. Just learning.

require 5.000;

use warnings;
use strict;
use POSIX;

my %tags = ();

my $input = $ARGV[0];
my $output = $ARGV[1];


open (FILE, "< $input") or die "cannot open $input: $!\n";
   while (my $tag = <FILE>) {
    $tag =~ m/<t id=(\d*)(.*)((\d*)([[:alpha:]]*))>/;
    if ($tag eq "\n") {
        # BLANK LINE
    } else {
        $tag =~ m/<t id=\((\d*)(.*)((\d*)([[:alpha:]]*))\)>/;
        $tags{sprintf("%04d%6s",$1 || 9999,$2)} = $tag;
    }
   }
close NEWFILE;
close FILE;

   open (NEWFILE, "> $output") or die "cannot open $output: $!\n";
   foreach my $id ( sort keys %tags )
   {
      print NEWFILE $tags{$id};
      print $tags{$id};
   }

close NEWFILE;
close FILE;

[download]

input.txt

<t id=2bc>Only the...</t>
<t id=1>Only the...</t>
<t id=12>Only the...</t>
<t id=21>Only the...</t>
<t id=1>Only the...</t>
<t id=1a>Only the...</t>
<t id=2>Only the...</t>
<t id=2>Only the...</t>
<t id=2>Only the...</t>
<t id=2>Only the...</t>
<t id=3>Only the...</t>
<t id=35>Only the...</t>
<t id=31>Only the...</t>
<t id=2b>Only the...</t>
<t id=4>Only the...</t>
<t id=42>Only the...</t>
<t id=5>Only the...</t>
<t id=51>Only the...</t>
<t id=2ac>Only the...</t>
<t id=52>Only the...</t>
<t id=6>Only the...</t>
<t id=7>Only the...</t>

Required results: output.txt

<t id=1>Only the...</t>
<t id=2>Only the...</t>
<t id=3>Only the...</t>
<t id=4>Only the...</t>
<t id=5>Only the...</t>
<t id=6>Only the...</t>
<t id=7>Only the...</t>
<t id=12>Only the...</t>
<t id=21>Only the...</t>
<t id=31>Only the...</t>
<t id=35>Only the...</t>
<t id=42>Only the...</t>
<t id=51>Only the...</t>
<t id=52>Only the...</t>
<t id=1a>Only the...</t>
<t id=2ac>Only the...</t>
<t id=2b>Only the...</t>
<t id=2bc>Only the...</t>

In reply to Sorting numerials first and then numerials with alpha characters last by VladP

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