how to aviod the two loops

I have a code:

x=linspace(-10,10,10001);

y=linspace(-5,5,20001);

A=[];

for j=1:length(x)

for k=1:length(y)

A=[A;x(j),y(k)];

end

end

The computation is very slow due to the two loops, so How can I aviod the two loops in this code?

Thanks very much!

Answer 1

[Voss]

[X,Y] = meshgrid(x,y);
A = [X(:),Y(:)];