MATLAB: Not to use loops

matrices

x=[2,3,4,5;1,3,2,5;8,7,6,5];
y=[-1,2,3,6;8,6,7,5;10,11,12,18];
z=[1,2,3,4;5,18,7,8;12,16,35,-8];
[yuk,idx]=max(z) %as andrei says (http://www.mathworks.com/matlabcentral/answers/17409-without-using-loops)
here z is a function of x and y and the question is  to find which corresponds to the max z in each column in the matrices x and y
in short i need to find elements of matrices in each column using idx without using loops For example in the 1. colum max z is 12 and find x is 8 y is 10

Best Answer

[zout,idx] = max(z);
[m n] = size(x) 
ind = sub2ind([m n],idx,1:n) 
xout = x(ind) 
yout = y(ind)
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