Is there a way to do the following without running a for loop.

clear all

y=randi(5,1,5)';

A=zeros(5,5);

for i=1:5,

A(i,y(i))=1;

end

I want to know if this can be implemented without using a for loop.

Answer 1

[Bruno Luong]

y = randi(5,1,5)'

Then

A = accumarray([(1:5)' y(:)], 1, [5 5]);

or

A = zeros(5,5);
A(sub2ind(size(A),1:5,y'))=1

[Srinivas Gopal Krishna]

Thank you very much.