concatenate each element of two arrays
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Mohit
el 1 de Feb. de 2014
Comentada: Azzi Abdelmalek
el 3 de Feb. de 2014
I have two arrays, can you please help me how can I concatenate each element of both arrays.
e.g. A=['a' 'b' 'c'] B = ['1' '2']
I want ['a1' 'a2' 'b1' 'b2' 'c1' 'c2']
Thanks
1 comentario
Respuesta aceptada
Azzi Abdelmalek
el 1 de Feb. de 2014
Editada: Azzi Abdelmalek
el 1 de Feb. de 2014
A=['a' 'b' 'c'];
B = ['1' '2'];
[ii,jj]=ndgrid(1:numel(A),1:numel(B));
out=arrayfun(@(x,y) [A(y) B(x)],jj(:),ii(:),'un',0);
out=sort(out)
3 comentarios
Jos (10584)
el 3 de Feb. de 2014
No need for arrayfun to concatenate, or using sort when you re-arrange the inputs and outputs to/from ndgrid:
[bb,aa] = ndgrid(B,A) ;
C = [aa(:) bb(:)]
Más respuestas (3)
Jan
el 1 de Feb. de 2014
A = {'a' 'b' 'c'};
B = {'1' '2'};
C = strcat(repmat(A, 2, 1), repmat(B', 1, 3))
Notice that A and B are cell strings, not char vectors.
1 comentario
Azzi Abdelmalek
el 3 de Feb. de 2014
Mohit, this also gives you what you want, just add
C(:)'
Wayne King
el 1 de Feb. de 2014
Make A and B cell arrays of strings, but B has to be the same length as A so you'll have to repeat the 2
A = {'a','b','c'};
B = {'1','2','2'};
strcat(A,B)
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