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how to make a function (named pcc ) that solves the cartesian product of 2 strings A(with n elements) and B(with m elements)?

Asked by Cosmin Grab on 27 Mar 2018
Latest activity Answered by Roger Stafford on 3 Apr 2018
intputs n, m, A, B output pcc

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2 Answers

Answer by David Goodmanson on 3 Apr 2018
Edited by David Goodmanson on 3 Apr 2018

Hi Cosmin,
If by 'strings' you mean vectors of characters then there are questions about how to accomplish multiplication. If you mean vectors of numbers, then in this context the Cartesian product is the same as the outer product, multiplication of a column vector by a row vector:
a = [1 2 3].'
b = [4 5 6 7]
a*b
ans =
4 5 6 7
8 10 12 14
12 15 18 21

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Answer by Roger Stafford on 3 Apr 2018

Assume A and B are row strings.
C = [reshape(repmat(A,length(B),1),[],1),repmat(B(:),length(A),1)];
The two-element rows of C will contain all possible pairs of elements of A and B.

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