MATLAB: How to avoid for loop when indexing

Question

Hello,

I have the following for loop, where pairs(500×10), is there to calculate cc without for loop?

   for i=1:500
cc(i,:)=pairs(i,pairs(i,:));
end

Answer 1

s     = size(pairs);
index = sub2ind(s, repmat((1:s(1)).', 1, s(2)), pairs) 
cc    = pairs(index)