MATLAB: Generating random numbers without repitiion

no repititionrandome numbers

Hello all,

How can I generate, say 10, random numbers uniformly distributed between Nmin and Nmax, without repeating any one of them twice?

Thanks

Best Answer

Nmin+rand(1,10)*(Nmax-Nmin)

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x   = [1     2     3     4     5
6     7     8     9    10
11    12    13    14    15
16    17    18    19    20];

EDIT after Mohammad's coment

[m,n] = size(x);
df = bsxfun(@plus,fullfact(m*ones(1,n)),(0:n-1)*m);
k = randperm(size(df,1));
out = x(df(k(1:min(100,numel(k))),:));

[m,n] = size(x);
xc = mat2cell(x,m,ones(n,1));
cc = cell(1,n);
[cc{:}] = ndgrid(xc{:});
k = randperm(numel(cc{1}));
out =  cell2mat(cellfun(@(x)x(k(1:min(100,numel(k)))'),cc,'un',0));

MATLAB: Random numbers

help rand
doc rand

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