how to select certain elements from a matrix?

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Uet
Uet 2014-6-11
评论： Uet 2014-6-11
A=[1,2,3,4], B=[90,0,40,0;0,0,10,60;55,15,0,10;0,15,5,0]
Hi everyone.. I want to select indexes of only one zero from each row and respective column. please help me in writing matlab code for this problem. Thanks in Advance

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David Sanchez
David Sanchez 2014-6-11
B=[90,0,40,0;
0,0,10,60;
55,15,0,10;
0,15,5,0];
[col row]=find(B==0);
A= [row col] % coordinates of your zero-elements
A =
1 2
1 4
2 1
2 2
3 3
4 1
4 4
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Uet
Uet 2014-6-11
Thank you very much sir, is there any way so that i can delete repeated rows as you mentioned in A? as you can see there are double entries from 1st, 2nd and 4th rows. I want to select one from each

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