check_unique.m

function [x] = check_unique(Y,solution)
K = numel(solution);
% Check which entry j of solution is equalt to entry k of solution
% after an appropriate shuffle.
sw = 0;
CS1 = Y;  %  CS1 and CS2 are the complex matrices after all possible merging
    for j = 1:K
        CS2 = cell2mat(solution(j));     
        if numel(CS1(1,:)) == numel(CS2(1,:)) && sw == 0
            M = numel(CS1(1,:))/2;
            Shuffle3 = perms(1:M);
            for i = 1:numel(Shuffle3(:,1))          
                 for r = 1:M                    
                    CS22(:,2*r-1) = CS2(:,2*Shuffle3(i,r)-1);  % clon of CS2 after shuffling
                    CS22(:,2*r) = CS2(:,2*Shuffle3(i,r));                       
                 end
                 if isequal(CS22,CS1)               
                 sw = 1;
                 end
            end
        end      
    end
    if sw == 1   % Solution is duplicated
        x = 0;
    else 
       x = 1;
    end
end