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

3 vues (au cours des 30 derniers jours)
intputs n, m, A, B output pcc

Réponses (2)

David Goodmanson
David Goodmanson le 3 Avr 2018
Modifié(e) : David Goodmanson le 3 Avr 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

Roger Stafford
Roger Stafford le 3 Avr 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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