count the number of ones in each row

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kurdistan mohsin
kurdistan mohsin 2022-6-6
编辑： KSSV 2022-6-6
hi, i have the below N by N matrix and i want to count the number of ones in each row , anyone can help ?
0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 1 1 1
0 0 0 0 1 0 0 0 0 0
0 0 0 1 0 0 0 0 0 0
0 0 0 0 0 0 1 0 0 0
0 0 0 0 0 1 0 0 0 0
0 0 1 0 0 0 0 0 1 1
0 0 1 0 0 0 0 1 0 0
0 0 1 0 0 0 0 1 0 0

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回答（1 个）

KSSV
KSSV 2022-6-6
编辑：KSSV 2022-6-6
Ran in:
A = [0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 1 1 1
0 0 0 0 1 0 0 0 0 0
0 0 0 1 0 0 0 0 0 0
0 0 0 0 0 0 1 0 0 0
0 0 0 0 0 1 0 0 0 0
0 0 1 0 0 0 0 0 1 1
0 0 1 0 0 0 0 1 0 0
0 0 1 0 0 0 0 1 0 0] ;
[m,n] = size(A) ;
C = zeros(m,1) ;
for i = 1:m
C(i) = nnz(A(i,:)) ;
end
C
C = 10×1
0 0 3 1 1 1 1 3 2 2
Or Simply:
C = sum(A==1,2)
C = 10×1
0 0 3 1 1 1 1 3 2 2

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