[R] Listing all possible samples of size n form a population of size N

[Ales Ziberna]

Dear useRs!



I would like to list all possible samples of size n form a population of 
size N. Obviously, N must be small (up to 20??) for this to be possible.



For example, let say that N = 3 and n = 2. Therefore, we can say we have 
units 1, 2 and 3. I believe all possible samples are : {1,2},{2,3} and 
{1,3}.



I would like to emphasize that I am not looking for the number of different 
samples, but a list of all possible samples.





Thank you in advance for any suggestions.

Best,

Ales Ziberna