MATLAB: How to select randomly 30 numbers from 108 and maintain uniqueness

Question

Hello,

I need to select 30 numbers randomly from 108. I need also that the values are unique.

My approach so far:

allpeople = [];
for person = 1:108
    allpeople(person) = person;
end
for i = 1:30
    nrpeople(i) = randi(length(allpeople));
end

But this doesn't produce unique numbers

Answer 1

randperm(108,30)

or let A - your data array 108 x 1

aa = unique(A);
out = aa(randperm(numel(aa),30));