Beefy Boxes and Bandwidth Generously Provided by pair Networks
laziness, impatience, and hubris

Re: is it prime?

by brx (Pilgrim)
on May 06, 2012 at 14:21 UTC ( #969141=note: print w/ replies, xml ) Need Help??

in reply to is it prime?

Where is my hammer?

sub isPrime($) { $n=pop; 1^(1x$n--)=~/^(1{2,$n})\1+$/; }

With n>2

Just for fun as a contrib to (fxn).

Update, thanks to ambrus's reply: Re^2: is it prime?

sub isPrime($) { (1x pop)!~/^(11+)\1+$/ }

Comment on Re: is it prime?
Select or Download Code
Replies are listed 'Best First'.
Re^2: is it prime?
by ambrus (Abbot) on May 06, 2012 at 17:32 UTC

Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://969141]
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others drinking their drinks and smoking their pipes about the Monastery: (11)
As of 2016-02-09 21:57 GMT
Find Nodes?
    Voting Booth?

    How many photographs, souvenirs, artworks, trophies or other decorative objects are displayed in your home?

    Results (326 votes), past polls