How to choose numbers by certain place-value ?

Replies to This Discussion

Permalink Reply by Erick Vásquez on May 28, 2014 at 3:48pm

with characters

Permalink Reply by Miklós Hatvani Deák on May 28, 2014 at 4:05pm

Thank you,

I have learned again. :)

Permalink Reply by Chris Hanley on May 28, 2014 at 4:12pm

Another option, when working with numbers, is to check the expression designer and see if there is a function that does what you want.  In this case, there is!

Permalink Reply by Miklós Hatvani Deák on May 29, 2014 at 2:04am

Thank you Chris !

This is also an interesting one !

What do you think do this method works for searching prime numbers too ?

Permalink Reply by David Rutten on May 29, 2014 at 4:52am

Sorry, there's no build in method for testing primeness (primality?).

That'll require custom code.

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David Rutten

david@mcneel.com

Attachments:

• primetest.gh, 9 KB

Permalink Reply by David Rutten on May 29, 2014 at 4:53am

Incidentally, that solver is extremely unoptimized.

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David Rutten

david@mcneel.com

Permalink Reply by Miklós Hatvani Deák on May 29, 2014 at 7:29am

Hi David,

It is good to here from you ! Thank you for this "custom" method !

I was trying to solve this Prime listing since a while, but somehow i just was not able to solve it. Now i know why.

Thanks again.

Miklos