Is there a quick way to generate combinations

[biomahui]

Is there a quick way to generate combinations?
For instance, if I have four elements(1,2,3,4), I can have a
comnination of (1,2,3), or (2,3,4),(1,3,4),(1,2,4).
but if I have 300 elements to generate combinations with 20 elements;
how can I get it with a concise scripts in perl.
Thanks in advance.

 

[Arne Ruhnau]

Is there a quick way to generate combinations?
For instance, if I have four elements(1,2,3,4), I can have a
comnination of (1,2,3), or (2,3,4),(1,3,4),(1,2,4).
but if I have 300 elements to generate combinations with 20 elements;

Maybe Math::Combinatorics from CPAN can help you. Here is how I found it:

http://search.cpan.org -> Search for 'Combinations'

Would that have been too hard for you to do?

Arne Ruhnau

 

[biomahui]

Thank you Arne Ruhnau.
Sorry. I plan to delete the post for my carelessness. but it doesn't
appear for a long time.
I will be very careful next time. I never go to cpan before.

 

[kevindotcar]

Maybe Math::Combinatorics from CPAN can help you. Here is how I found it:

http://search.cpan.org -> Search for 'Combinations'

[---]

More specifically (well, more generically), Google
"Perl and math and combinations"

and you'll hit it along with some other possible solutions.


kDot

 

[biomahui]

Arne Ruhnau wrote:

More specifically (well, more generically), Google
"Perl and math and combinations"

and you'll hit it along with some other possible solutions.

kDot

Thank you, Kevindot.

 

[charley]

The number of possible combinations for 300 choose 20 is larger than
any disk will record.

The number is 7.500433759 E30

Chris