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Hi,,I am trying to calculate the weight of a matrix.how can i do that> I am explaining below

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nafila aytija
nafila aytija 2016-5-31
评论： the cyclist 2016-6-2
Suppose I have a matrix...
A = [1 0 0 0 ;
1 1 0 0 ;
1 1 1 0 ;
1 1 1 1]
how do I calculate that how many coulmns have only one ONE ? TIA

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the cyclist
the cyclist 2016-5-31
numberOfColumnsThatHaveExactlyOneOne = sum(sum(A==1)==1);
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