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Option 'stable' of the command unique?

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MRC
MRC 2014-5-1
编辑： Azzi Abdelmalek 2014-5-1
I have a matrix A ax1 and a vector B which is obtained as
B=sum( bsxfun(@eq, A, unique(A,'stable')') )'
E.g.
A=[5; 5; 3; 4; 4; 4];
B=[2;1;3];
The problem is that the option 'stable' is not recognized in my current version of Matlab. Do you have any idea about how I can replace this command?

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Azzi Abdelmalek
Azzi Abdelmalek 2014-5-1
编辑：Azzi Abdelmalek 2014-5-1
[a,idx]=unique(A)
[ii,ii]=sort(idx);
B=sum( bsxfun(@eq,A,a(ii)'))'

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