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Index › Programming Questions & Help › Syntax Questions › multidimensional array access
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multidimensional array access (Read 518 times)
neilb
multidimensional array access
May 31st, 2006, 2:06am  
is there a compact way in Java to extract slices from a multidimensional array without lots of looping? For example, let's say I have a 4D array

int[][][][] A = new int[7][2][4][8];

I know that you can extract slices starting at the beginning:

A[6]

yields a 3D array the same size as int[2][4][8], but what about, say, extracting a funny slice like

A[everything][1][everything][4]

? This is extremely compact in Matlab-- A(:,1,:,4) --and I'm wondering if each of the dozens of such invocations in my Matlab code is going to have to be replaced by a set of nested loops.

thanks,
neil
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mflux
Re: multidimensional array access
Reply #1 - May 31st, 2006, 8:30am  
Maybe you should do this with a class instead of an n-dimensional array?

Generally from my experience, anything beyond three dimensions gets rediculous, and often should be accomplished by something else. When you've got four or five dimensions in an array it might be time to re-think your design.

Just a thought!
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