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Compact and sparse bit vector

by diotalevi (Canon)
on Dec 27, 2008 at 21:37 UTC ( #732843=CUFP: print w/replies, xml ) Need Help??

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  1. or download this
    use constant MEGABYTE => 2 ** 20;
    my $vector = '';
    # 5,000 bits. Set every 100th bit between 15 million and 20 million. 
    ...
        }
    }
    printf "%0.1fM\n", length( $vector ) / MEGABYTE;
    
  2. or download this
    use constant KILOBYTE => 2 ** 10;
    use Judy::1 qw( Set MemUsed );
    my $vec;
    ...
        }
    }
    printf "%0.1fK\n", MemUsed( $judy ) / KILOBYTE;
    

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