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ChooseK

03 Jan 2011 (Updated 04 Jan 2011)

All pairs intersecting on k-1 tuples from all possible k-tuples of n objects

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Description

I can''t find a better name. It seems the function can be used to build Fermionic Galerkin matrices.

Acknowledgements

The author wishes to acknowledge the following in the creation of this submission:
Merge sorted arrays

MATLAB release

MATLAB 7.11 (2010b)

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Everyone's Tags	combination, nchoosek, simplex, tuples
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Comments and Ratings (2)
03 Jan 2011	Matt Fig	There is no mention of the need for MERGESA other than the error message I see when trying to run the file. Other than that, this is a nice recursive solution to the combinations without replacement problem.
04 Jan 2011	Jos (10584)	Nice recursive algorithm! You might be interested in my implementation for nchoose2: http://www.mathworks.com/matlabcentral/fileexchange/20144-nchoose2-v2-1-jun-2008

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Updates
03 Jan 2011	Add MERGESA (FEX #28930) in the requirement
04 Jan 2011	FEX requirement (try again)