Dear Monks,
I have this subroutine that try to convert list of list to get unique element of it into array
I just wonder if beloved monks have a more efficient and compact way to do this clumsy subroutines of mine.
sub edges2vertices {
  #AoA to uniq array elem;

  my @edges = @_;
  my @vertices;
  my @uniqv; 
  
   for my $i ( 0 .. $#edges ) {
               for my $j ( 0 .. $#{$edges[$i]} ) {
                   push @vertices, $edges[$i][$j];
               }
           }

       @uniqv = sort keys %{{map {$_,1} @vertices}};
    return @uniqv;
}

[download]
So that with 
my @E = ([1,2], [1,3], [2,3], [2,4], [3,4]);
my @nv;
  @nv = edges2vertices(@E);

# will return:
__END__
$VAR1 = [
          '1',
          '2',
          '3',
          '4'
        ];

[download]
Regards,
Edward

In reply to More efficient way to get uniq list elements from list of lists by monkfan

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