I need create a function for order pairs

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Juan Pérez Álvarez
回答： Rik 2022-2-10
Hi I nedd create a function for do something like this (using for loops)
A = [1,2,3];
B = [4,5,6];
LA = length(A);
LB = length(B);
LT = LA*LB;
% The matrix of pair orders always be (n,2), in this case C(LT,2) = C(9,2)
C = zeros(LT,2);
C = [(1,4) ; (1,5) ; (1,6) ; (2,4) ; (2,5) ; (2,6) ; (3,4) ; (3,5) ; (3,6)];
I try using this kind of code:
C = []:
for i =1:LT
C(i) = B(A);
% or
C(i) = B[];
end
Any idea?

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回答（1 个）

Rik
Rik 2022-2-10
You can create indices with meshgrid or ndgrid, no loop needed.
[indA,indB]=ndgrid(1:numel(A),1:numel(B));
C=[A(indA(:)).' ; B(indB(:)).'];

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