public static IteratingRLW bufferedand(final int bufSize, final IteratingRLW... al) {
        if (al.length == 0)
            throw new IllegalArgumentException("Need at least one iterator");
        if (al.length == 1)
            return al[0];
        final LinkedList<IteratingRLW> basell = new LinkedList<IteratingRLW>();
        Collections.addAll(basell, al);
        return new BufferedIterator(new BufferedAndIterator(basell,
                bufSize));
    }
public static IteratingRLW bufferedand(final int bufSize, final IteratingRLW... al) {
        if (al.length == 0)
            throw new IllegalArgumentException("Need at least one iterator");
        if (al.length == 1)
            return al[0];
        final LinkedList<IteratingRLW> basell = new LinkedList<IteratingRLW>();
        Collections.addAll(basell, al);
        return new BufferedIterator(new BufferedAndIterator(basell,
                bufSize));
    }
public static IteratingRLW bufferedand ( final int bufSize , final IteratingRLW ... al ) { if ( al . length == 0 ) throw new IllegalArgumentException ( "Need at least one iterator" ) ; if ( al . length == 1 ) return al [ 0 ] ; final LinkedList < IteratingRLW > basell = new LinkedList < IteratingRLW > ( ) ; Collections . addAll ( basell , al ) ; return new BufferedIterator ( new BufferedAndIterator ( basell , bufSize ) ) ; }
Aggregate the iterators using a bitmap buffer.

@param al      set of iterators to aggregate
@param bufSize size of the internal buffer used by the iterator in
64-bit words (per input iterator)
@return and aggregate
Aggregate the iterators using a bitmap buffer .