what is the function that the same as perms however can used n more than 10?
10 views (last 30 days)
Show older comments
sharifah shuthairah syed abdullah
on 3 Jul 2018
Commented: sharifah shuthairah syed abdullah
on 4 Jul 2018
when i build a coding i used n less than 10, i used perms function.. then when get the correct coding the i test the coding in various size of n, which is n more than 10, however the length for perm is less than 10. what is the same function as perm, but can used for n more than 10?
0 Comments
Accepted Answer
OCDER
on 3 Jul 2018
I think you need to make your own function of perms, but one that only returns 1 of many permutations at a time. When you past n = 10, you'll run out of memory fast.
3.5 GB n = 11
46.0 GB n = 12
647.6 GB n = 13
9764.0 GB n = 14
One suggestion is to make a classdef object that track the ith permutation and will continuously return the the next permutation. But read this link as your attempt to compute permutations for n >> 11 gets fairly impossible...
12 Comments
Walter Roberson
on 3 Jul 2018
https://www.mathworks.com/matlabcentral/fileexchange/53110-quadratic-assignment-problem--qap--using-ga--pso-and-fa
https://github.com/cshen/quadratic-assignment-problem
More Answers (1)
Stephen23
on 3 Jul 2018
One option would be to use a permutation generator, which does not store all permutations in memory:
etc.
I leave it up to the reader to decide if running through all permutations is tractable or not.
See Also
Categories
Find more on Parallel Computing Fundamentals in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!