how to put only one element randomly in row of matrix

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Meriem Ben Kalia
Meriem Ben Kalia 2020-8-11
评论： Meriem Ben Kalia 2020-8-11
Hello,
Can anyone help me please, I didn't a solution
I'd like to put only one element of row to 1 'randomly' and the other putted in 0
Exemple I have A= zeros (4,3) I like to get A= [0 1 0; 1 0 0; 0 0 1; 1 0 0]

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KSSV
KSSV 2020-8-11
编辑：KSSV 2020-8-11
A = zeros(4,3) ;
[m,n] = size(A) ;
for i = 1:m
idx = randperm(n,1) ;
A(i,idx) = 1 ;
end

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