Intersection of three and more arrays

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Baisseyev Miram
Baisseyev Miram 2018-11-15
评论： Baisseyev Miram 2018-11-16
Hi, is it possible in matlab to find intersection of three and more arrays and index of intersection value in each of three array? Like [C,ia,ib] = intersect(A,B) but for three or more arrays.

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Bruno Luong
Bruno Luong 2018-11-15
My FEX returns the index of the arrays
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Bruno Luong
Bruno Luong 2018-11-15
编辑：Bruno Luong 2018-11-15
IIUC, what you want is the common element with the lowest max indexes over all the set.
a = [5,6,4,7,8],
b = [7,8,6,5,4],
c = [4,8,5,6,7],
sets = {a,b,c};
nset = length(sets);
idx = cell(1,nset);
[s,idx{:}] = mintersect(sets{:});
idx = cat(1,idx{:});
imax = accumarray(repmat((1:length(s))',nset,1),idx,[],@max);
[~,iminmax] = min(imax);
firstelem = s(iminmax) % returns 5
Baisseyev Miram
Baisseyev Miram 2018-11-16
Yes, thank you very much for spending your time

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