5.0 | 3 ratings Rate this file 192 downloads (last 30 days) File Size: 2.39 KB File ID: #17818

All Permutations of integers with sum criteria

30 Nov 2007 (Updated 16 Sep 2009)

All Pernutations of integers with sum criteria

File Information
Description	This function provides all combinations of integer vector that must verify a criteria on the sum. Supported criteria is sum(v) == L1 sum(v) <= L1 sum(v) < L1
MATLAB release	MATLAB 7.1.0 (R14SP3)
Zip File Content
Other Files	allVL1.m, license.txt

Tags for This File
Everyone's Tags	l1, multivirables, order, permutation, permutation l1 polynomial multivirables order, polynomial
Tags I've Applied
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Comments and Ratings (3)
13 Dec 2007	John D'Errico	A slick solution to this problem, that uses an elegant recursive code for its work. Good help, error checks, defaults for arguments where they apply. One minor flaw that I'll hope the author fixes. There is no H1 line. An H1 line is the first line of help. It should be a descriptive line that the function lookfor keys on, including all reasonable keywords that you might search on. Lookfor is useful when you need to find this function in a year. Will you remember the name "allVL1" next year? No, probably not. But lookfor will find this function for you, if you supply an H1 line.
05 Mar 2008	Greg von Winckel	Great stuff. I used your work in my code that I just submitted here, but forgot to give credit. I will fix that as soon as I can modify the entry. Thanks for your help!
21 Sep 2009	Ben Petschel	Nice program. Users might also be interested in a looped solution using the function "nextwhile" in the NextVector toolbox <pre class="link">http://www.mathworks.com/matlabcentral/fileexchange/24757</pre>. If the entire matrix of combinations is needed then Bruno's version is faster (because row concatenation is slow) otherwise the looped solution is faster.

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Updates
01 May 2008	Add H1 line as suggested by John D'Errico
18 May 2009	Possibility to get the number of permutations to check feasibility
16 Sep 2009	Correct a bug when the number of solutions is inquired

Tag Activity for this File
Tag	Applied By	Date/Time
permutation l1 polynomial multivirables order	Bruno Luong	22 Oct 2008 09:37:21
permutation	Bruno Luong	18 May 2009 07:34:14
polynomial	Bruno Luong	18 May 2009 07:34:15
l1	Bruno Luong	18 May 2009 07:34:15
multivirables	Bruno Luong	18 May 2009 07:34:15
order	Bruno Luong	18 May 2009 07:34:15

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