how to generate a random matrix with specific condition ?

i want to generate a random matrix in every time i want a specific row will be the same

if i have Matrix

A = [0 -1  0 0 0 
     1  1 -1 1 1
     0  1  0 0 0
     0  1  0 0 0 ]

i want to generate a random matrix and in every time the row and column which does have the ones in there entry i want to still appear in every time

• generate a completely random matrix, and then overwrite that row and column

[John D'Errico]

Huh? Please explain. CLEARLY. Give an example of what you expect.

[Firas Al-Kharabsheh]

i expect like that

 first generation X = [ 1  -1  1 0 0
                        1   1 -1 1 1
                        1   1  0 1 1
                        0   1  0 1 1 ]

and when every generation the same column and row in matrix A i want still appear every time

[John D'Errico]

So just generate a completely random matrix, and then overwrite that row and column. WTP?

[Firas Al-Kharabsheh]

yes

Answer 1

[Jan]

A = [0 -1  0 0 0; ...
    1  1 -1 1 1; ...
    0  1  0 0 0; ...
    0  1  0 0 0 ];
X = rand(size(A));  % Or randi?
index = (A(:) ~= 0);
X(index) = A(index);