Combination of multiple rows

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Paulo
Paulo 2015-10-21
评论： TastyPastry 2015-10-21
Hi,
I'm trying to make combinations of six of a matrix with two columns and six rows. For example: [2 4; 6 8; 10 12;1 3; 5 7; 9 11]. Two numbers in a same row don't make a combination. For example: a combination with 9 and 11 isn't a good combination. I've tried using 'nchoosek' and then deleting the combinations that have numbers in the same row, but I get an answer that has some combinations that aren't allowed.
code
%
t = [x(:,1);x(:,2)];
C = nchoosek(t,6);
lengte = size(C,1);
for i = 1:lengte
for j = 1:6
if max(C(i,:)==x(j,1)) || max(C(i,:)==x(j,2))
C(i,:) = [];
lengte = size(C,1);
end
end
end
I've also tried deleting using the following code, but it didn't helped:
code
%
for i = 1:6
C = C(any(C==(x(i,1)),2),:) & C(any(C==(x(i,2)),2),:);
end
end
I would really appreciate if any suggestions might be given.
With kind regards

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