concatenate each element of two arrays

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Mohit
Mohit 2014-2-1
评论： Azzi Abdelmalek 2014-2-3
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

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Azzi Abdelmalek
Azzi Abdelmalek 2014-2-1
编辑：Azzi Abdelmalek 2014-2-1
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)
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Jos (10584)
Jos (10584) 2014-2-3
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(:)]

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更多回答（3 个）

Jan
Jan 2014-2-1
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.
Jos (10584)
Jos (10584) 2014-2-3
A=['a' 'b' 'c']
B = ['1' '2']
C = allcomb(A,B)
ALLCOMB can be found here: http://www.mathworks.com/matlabcentral/fileexchange/10064-allcomb
Wayne King
Wayne King 2014-2-1
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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