MATLAB: Loop to create the new matrix which contains the kron product

matrix

Hi,
So I have created a 3*3 matrix for A and B as shown below
A=round(rand(3,3)*10-5)
B=round(rand(3,3)*20-10)
now the question has ask me to use the nested loop to create the new matrix which contains the Kronecker product K=A*B
for i=1:3
    for ii=1:3
        K=A(i,ii)*B
    end
end
I've attempted to do this by creating this nested loop, it generates 9 answers for K and I don't really know how to combine these answers into one matrix of 9*9. I am not sure if this method is right. It would be great if anyone can help me with this.
Thank you in advance 🙂

Best Answer

 K = zeros(3*3,3*3);
 for i=1:3
    for ii=1:3
       K(3*i-2:3*i,3*ii-2:3*ii) = A(i,ii)*B;
    end
 end
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