If your intervals are potentially long, then I'd suggest the array of array approach because it avoids constructing long lists of elements. You can produce that array of arrays with: 
my @interval_arrays = map [$a[$_], $b[$_]], 0..$#a;

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And then you can intersect with your interval and get a result in the same format with: 
my @intersected_arrays = map {
    my $min = $s1 < $_->[0] ? $_->[0] : $s1;
    my $max = $s2 > $_->[1] ? $_->[1] : $s2;
    $min <= $max ? [$min, $max] : ();
} @interval_arrays;

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In reply to Re: array of arrays or not by tilly
in thread array of arrays or not by coldy

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