I have a AoA containing a couple of thousand arrays each of which contains 4 non-duplicate, small integers (say 0..19 ). eg. 

my @AoA = (
    [ 2, 13, 3, 16 ],
    [ 10, 1, 11, 6 ],
    [ 0, 10, 11, 19 ],
    [ 6, 1, 19, 15 ],
    [ 17, 6, 18, 12 ],
    ...
);

[download]

Given that I have selected one of these subarrays (say, the first [ 2, 13, 3, 16 ]),

I then need to iterate the entire AoA to find all those that do not contain any of the integers in the selected subarray.

This needs to be done many times, so I'm looking for a reasonably efficient way to do so. Thoughts?

(I'm thinking about indexing; but how to do so efficiently without consuming huge amounts of space?)

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In reply to Efficient selection mechanism? by BrowserUk

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