MATLAB: Specify row and column independently to update matrix

Question

Lets say I have a matrix: X = zeros(3);

and want to add a vector: x = [1 2 3]; to the matrix, but add it such that each number is added to a different column in each row defined by y = [1 2 3].

I could write a for loop,

for i = 1:length(x)
   X(i,y(i)) = x(i);
end

but it should be possible to do this in a single line….

any suggestions? thanks

Answer 1

doc sub2ind