On 2017-08-23 11:35 AM, Bert Gunter wrote:
ummm, Ista, it's 2^n.
or (2^n-1) if the empty set is not considered as a "combination"
;-) spencer
Cheers,
Bert
Bert Gunter
"The trouble with having an open mind is that people keep coming along
and sticking things into it."
-- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )
On Wed, Aug 23, 2017 at 8:52 AM, Ista Zahn <istaz...@gmail.com> wrote:
On Wed, Aug 23, 2017 at 11:33 AM, Christofer Bogaso
<bogaso.christo...@gmail.com> wrote:
Hi again,
I am exploring if R can help me to get all possible combinations of
members in a group.
Let say I have a group with 5 members : A, B, C, D, E
Now I want to generate all possible unique combinations with all
possible lengths from that group e.g.
1st combination : A
2nd combination : B
.....
5th combination : E
6th combination : A, B
7th combination : B, C
....
last combination: A, B, C, D, E
Ideally, I have a fairly large group so am looking for some
programmatic way to generate all possible combinations.
Be careful, the number of combinations grows pretty quickly. You can
calculate the number ahead of time with
sum(choose(n, 1:n))
where n is the number of values in your group.
--Ista
Any help will be highly appreciated.
Thanks for your time.
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