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Combin2Rank

version 1.1.0.0 (1.77 KB) by Paulo Fonte
Calculates the rank (sequential ordinal) of nCk combinations

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Updated 19 Jan 2009

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Example:

Combs=nchoosek(1:5,3)
Combs =
1 2 3
1 2 4
1 2 5
1 3 4
1 3 5
1 4 5
2 3 4
2 3 5
2 4 5
3 4 5
Combin2Rank(5,3,Combs)
ans =
1
2
3
4
5
6
7
8
9
10

ref: A Numbering System for Combinations, Gary D. Knott, Communications of the ACM, Jan. 1974, v.17, n.1

Cite As

Paulo Fonte (2020). Combin2Rank (https://www.mathworks.com/matlabcentral/fileexchange/22717-combin2rank), MATLAB Central File Exchange. Retrieved .

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Updates

1.1.0.0

Small programming tweaks.

MATLAB Release Compatibility
Created with R2008a
Compatible with any release
Platform Compatibility
Windows macOS Linux
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