In the following code I get matrix 'a' with repeated columns. How to generate it without repetition?

Question

PLACEIUS NISHIGA G 2018-1-5

0
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https://ww2.mathworks.cn/matlabcentral/answers/375672-in-the-following-code-i-get-matrix-a-with-repeated-columns-how-to-generate-it-without-repetition

编辑： PLACEIUS NISHIGA G 2018-1-5

if true
k=3; 
n=5;
m=(2*k)-2;
n1=k-1;
N=(factorial(m))/(factorial(n1)*factorial(n1));
o = ones(k-1,1) ;
z = zeros(k-1,1) ;
a1 = [o ; z];
n2=1;
for i=1:N
a(:,n2)= randsample([o ; z],m)
n2=n2+1;
end 
end

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Answer 1

KSSV 2018-1-5

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k=3;
n=5;
m=(2*k)-2;
n1=k-1;
N=(factorial(m))/(factorial(n1)*factorial(n1));
o = ones(k-1,1) ;
z = zeros(k-1,1) ;
a1 = [o ; z];
v = a1' ;
C = unique(perms(v),'rows') ;

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PLACEIUS NISHIGA G 2018-1-5

编辑：PLACEIUS NISHIGA G 2018-1-5

在 MATLAB Online 中打开

Thank you sir. It helped us. But the elements in each column is the same every time I execute it. The elements in each column need to be randomly generated for every execution without repetition with other columns.

if true
  % code
k=3;
n=5;
m=(2*k)-2;
n1=k-1;
N=(factorial(m))/(factorial(n1)*factorial(n1));
o = ones(k-1,1) ;
z = zeros(k-1,1) ;
a1 = [o ; z];
v = a1' ;
C = unique(perms(v),'rows') ;
C=C'