function varargout = sort(chr)% SORT - Sort in ascending order.  For a vector of chromosomes, sort(x)%    sorts the objects of x in ascending order, with the respect to%    the fitness of the chromosomes. %    [y i] = sort(x) also returns an index vector.for k=1:length(chr)  tmp(k)=chr(k).fitness;end[q ind]=sort(tmp);varargout{1}=chr(ind);varargout{2}=ind;