Pair comparison in from other rows

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raj singh
raj singh 2016-5-26
回答： raj singh 2016-5-29
I have:
A1=[3 4]
A2=[3 1 4]
A3=[3 2 1 4]
want to convert as:
(3,4)
(3,1)(1,4)
(3,2)(2,1)(1,4)
Now I want to check, is any pair common in all rows (except first rows)
For example: combination (1,4) is common in 2 and 3 row. In the result, I want this pair. Please help me to complete this program.

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采纳的回答

Andrei Bobrov
Andrei Bobrov 2016-5-26
A = {A1,A2,A3};
C = cellfun(@(x) hankel(x(1:end-1),x(end-1:end)),A,'un',0);
[a,~,c] = unique(cat(1,C{:}),'rows');
out = a(histc(c,1:size(a,1)) > 1,:);
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raj singh
raj singh 2016-5-28
Thanks Andrei sir, but i am using 2012a MATLAB, in which repelem and accumarray is not working. I don't have Matlab2016a. There is any other option to run run your given program.
raj singh
raj singh 2016-5-28
Hello Image, Actually [A] represent the paths from one node to other node and i want common line in that paths. Do you have any suggestion for this ppg.

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更多回答（1 个）

raj singh
raj singh 2016-5-29
A1=[1 4];
A2=[1 3 4];
A3=[1 2 3 4];
A4=[1 2 6 3 4];
I want common pairs from all row (vectors) except first row. It means my answer will be (3 4) and (1 2). First answer of Andrei sir, works perfect. May this is possible to print like this:
(Total no of row).........(Pair)............(How many times)
4 (3 4) 3
4 (1 2) 2

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