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### Re: a close prime number

by chromatic (Archbishop)
 on Feb 11, 2005 at 20:48 UTC ( #430266=note: print w/replies, xml ) Need Help??

in reply to a close prime number

That's really easy:

```sub find_closest_primes
{
my \$number = shift;

my @close_primes;

for my \$close (find_close_numbers( \$number ))
{
push @close_primes, \$close if is_prime( \$close );
}

return @close_primes;
}

All you have to do is fill in the behavior of find_close_numbers() and is_prime()!

Replies are listed 'Best First'.
Re^2: a close prime number
by belden (Friar) on Feb 11, 2005 at 21:12 UTC
Re^2: a close prime number
by water (Deacon) on Feb 13, 2005 at 19:33 UTC
Your solution reminds me of me of a article currently referenced from the Joel on Software homepage, which talks about the the do-magic-here step.

:)

I don't necessarily think of it as magic; I didn't know what the supplicant would consider a "close" number nor did I know which prime number finding algorithm he might find acceptable.

It's not really a joke answer. It's how I would divide the problem if I were doing it.

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