class SparseVector extends Vector {

	@Override
	public VectorIterator iterator() {
		return new SparseVectorVectorIterator();
	}

	public  SparseVector();
	public  SparseVector(int n);
	public  SparseVector(int n, int[] indices, double[] values);
	public  SparseVector(int n, Map<Integer, Double> kv);

}