How can I exclude an index from generating a random number?

Hello,

I want to generate a matrix that has in every row one element set to one. However, the numbers on the diagonals should not be one.

This is the code I have now. However, j can not be equal to i, but I don't know how to exclude i from generating j.

W = zeros(N,N);

for i = 1:N

j = randi(N);

W(i, j) = 1;

end

I hope someone can help! Thanks in advance :)

Answer 1

[madhan ravi]

W = zeros(N,N);                   for ii = 1:N 
      for jj = 1:N
          if ii ~= jj
              Hj = randi(N);
              W(ii, jj) = 1;
          end 
      end
  end

[madhan ravi]

You can achieved the above using sub2ind(...) and eye(...)

[Anne van Voorthuijsen]

Thank you for your answer!

Hoe could I achieve a matrix with only a one at one position in each row? But still not on the diagonal. So for example:

[0, 0, 1; 1, 0, 0; 0, 1, 0]

[madhan ravi]

Well I believe I answered your original question.