It's almost next to impossible to give a suitable program if the problem is only defined by a single example. But here's my shot. If gives the right output for your specific example, but if the data is different, the output might not be what you want. That happens if you give a single example, and no description. ;-) 
#!/usr/bin/perl

use strict;
use warnings 'all';

my (%data, @data, $data);

while (<DATA>) {
    chomp;
    push @{$data {$_}} => $_;
}

@data = @data {sort {$a <=> $b} keys %data};

while (@data) {
    $data = shift @data;
    print pop @$data, "\n";
    push @data => $data if @$data;
}

__DATA__
2
2
2
3
3
3
4
4
4

[download]
Abigail

In reply to Re: Text Manipulation Quickie by Abigail-II
in thread Text Manipulation Quickie by johnirl

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