RANDSUBSET
Version 1.2.0.0 (4.41 KB) by
Bruno Luong
Return a random subset of k elements of the set of n elements
A = RANDSUBSET(N, K) is equivalent to
ALLSUBSETS = NCHOOSEK(1:N,K);
A = ALLSUBSETS(RANDI(NCHOOSEK(N,K)));
% or
A = RANDPERM(N);
A = SORT(A(1:k));
This function can also be used to generate random sampling without replacement by calling RANDPERM on the output.
It works advantageously with large N (but "reasonable" K), and fast!
Cite As
Bruno Luong (2024). RANDSUBSET (https://www.mathworks.com/matlabcentral/fileexchange/28002-randsubset), MATLAB Central File Exchange. Retrieved .
MATLAB Release Compatibility
Created with
R2010a
Compatible with any release
Platform Compatibility
Windows macOS LinuxCategories
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