This part:

foreach $i (@f) {
        @e = grep {$_ % $i != 0}  @n;
        @n = ();
        @n = @e;
}

[download]

could be shortened as:

foreach $i (@f) {
  @n = grep {$_ % $i != 0} @n;
}

[download]

without making it less readable.

The problem in your implementation is that you take off @n every multiple of $i, including $i! Try:

foreach $i (@f) {
  @n = grep {$_ % $i != 0 || $_ == $i} @n;
}

[download]

Updated: jwkrahn is right, this @n = grep {$_ % $i != 0} @n foreach $i (@f); would not work.

Rule One: "Do not act incautiously when confronting a little bald wrinkly smiling man."

In reply to Re: What am I missing? by psini
in thread What am I missing? by neo_

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