Can we Generate a Random Matrix with No Repeated Elements

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?

Answer 1

[Bruno Luong]

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

[Kareem Elgindy]

Nice work. Can we choose the integers from a sample interval instead of starting from 1?

[Bruno Luong]

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

[Kareem Elgindy]

Fantastic!