class DataBlock implements IDataBlock, Cloneable {

    @Override
    public DataBlock extract(int start, int count) {
        return extract(start, count, 1);
    }

    public  DataBlock(final double[] data);
    public  DataBlock(final double[] data, final int beg, final int end, final int inc);
    public  DataBlock(final int n);
    public  DataBlock(final IReadDataBlock data);

}