MATLAB: How to create a random matrix with no duplicate value in the line

matrixrandom

I want to create a random matrix with no duplicate value in every line of the matrix

Best Answer

Use randperm to get a sequence of integers with no repetitions:
>> randperm(9)
ans =
   9   6   5   8   3   7   1   4   2
If you want a matrix where each row has unique numbers, then you can use a loop:
R = 3;
C = 5;
mat = NaN(R,C);
for k = 1:R
    mat(k,:) = randperm(C);
end
which gives:
>> mat
mat =
 3   4   1   5   2
 4   1   2   5   3
 4   5   2   1   3
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