I've been searching perlmonks for pretty long now, also tried different resources on the web, but haven't found anything so far. What I'm doing: i'm building an array with all possible combinations of a word list (code of combination sub found on perlmonks). i then get the array @combos back, which i need sorted by value length of the array. Getting it sorted by value is not the problem, but by length of the value of each entry. 
        my @array;
        push @array, "one";
        push @array, "two";
        push @array, "three";
        psuh @array, "four";
        my $k=0;
        my @combos;
        for(combinations(@array))
        {
                $combos[$k] = join("|",@$_);
                $k++;
        }

sub combinations {
  return [] unless @_;
  my $first = shift;
  my @rest = combinations(@_);
  return @rest, map { [$first, @$_] } @rest;
}

[download]
this returns the following array: 
$VAR1 = [
          '',
          'four',
          'three',
          'three|four',
          'two',
          'two|four',
          'two|three',
          'two|three|four',
          'one',
          'one|four',
          'one|three',
          'one|three|four',
          'one|two',
          'one|two|four',
          'one|two|three',
          'one|two|three|four'
        ];

[download]
but what I need is to sort the array, so the return value is something like: 
$VAR1 = [
          'one|two|three|four'
          'two|three|four',
          'one|three|four',
          'one|two|three',
          'one|two|four',
          'three|four',
          'two|three',
          'one|three',
          'two|four',
          'one|four',
          'one|two',
          'three',
          'four',
          'two',
          'one',
      ''          
        ];

[download]
any help regarding this would be greatly appreciated.


Emanuel

In reply to Sort Array by length of Value by Emanuel

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