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    %% Preserve Legacy Behavior of setxor  
% Use the |'legacy'| flag to preserve the behavior of |setxor| from R2012b
% and prior releases in your code.   

%% 
% Find the symmetric difference of |A| and |B| with the current behavior. 
A = [5 1 3 3 3]; B = [4 1 2 2];
[C1,ia1,ib1] = setxor(A,B)  

%% 
% Find the symmetric difference and preserve the legacy behavior. 
[C2,ia2,ib2] = setxor(A,B,'legacy')