Re: nchoosek question

[Mike Miller]

On Fri, 9 Dec 2005, Frank Palazzolo wrote:

> I am using nchoosek(n,k) to generate the number of combinations
> n!/(k!(n-k)!).
> Unfortunately, it seems there is no vectorized version, for n and k are
> vectors or matrices of the same size.


It looks like bincoeff(N,k) does what you want.

bincoeff( reshape( [10:2:20]', 3, 2 ), reshape( [5:10]', 3, 2 ) )

ans =

 252 12870
 924 48620
 3432 184756

Should we do away with nchoosek()?  Alias it to bincoeff()?

Mike



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