how can I generate different vectors with the all the unique combinations of numbers inside a one vector?

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German Preciat Gonzalez
评论： German Preciat Gonzalez 2016-3-16
Hi, If i have a vector a like:
a=[1 2 3 4]:
how can I generate different vectors with the all the unique combinations of the original numbers like:
r=[1 2 3]
r=[1 2 4]
r=[2 3 4]
r=[1 2]
r=[1 3]
r=[1 4]
r=[2 3]
r=[2 4]
r=[3 4]
r=[1]
r=[2]
r=[3]
r=[4]

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采纳的回答

Andrei Bobrov
Andrei Bobrov 2016-3-16
编辑：Andrei Bobrov 2016-3-16
a=[1 2 3 4]
r = cell;
for ii = numel(a)-1:-1:1
r = [r;num2cell(nchoosek(a,ii),2)];
end

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