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Can we Generate a Random Matrix with No Repeated Elements

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Kareem Elgindy
Kareem Elgindy 2022-11-8
评论： Kareem Elgindy 2022-11-8
I'm aware of randperm, but it gives vectors rather than 2D matrices. One may also use a loop with randperm to generate a random matrix with no repeated elements in each row, but overalll, this doesn't guarantee the non-redundancy of any element if we consider the whole matrix.
Is there a way to do that?

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Bruno Luong
Bruno Luong 2022-11-8
Ran in:
Just the reshape long vector returned by randperm
m = 3;
n = 2;
A = reshape(randperm(10,m*n), m, n)
A = 3×2
7 10 1 4 2 6
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Bruno Luong
Bruno Luong 2022-11-8
编辑：Bruno Luong 2022-11-8
Ran in:
You can map them to anything you like by simple indexing, here is set s as example:
m = 3;
n = 2;
s = 101:110;
A = s(reshape(randperm(numel(s),m*n), m, n))
A = 3×2
109 107 105 104 110 102

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