public class PolyClient
{
   /**
   * A few simple test cases.
   */
   public static void main (String[] args)
   {
      APolynomial pc0 = new ConstPoly (0.0); // pc0 == 0.
      APolynomial pc1 = new ConstPoly (-1.0); // pc1 == -1.
      APolynomial p1 = new NonConstPoly (-5.0, 3, pc0); // p1 == -5x^3.
      APolynomial p2 = new NonConstPoly (2.0, 5, p1);   // p2 == 2x^5 - 5x^3.
      APolynomial p3 = new NonConstPoly (-4.0, 6, p2);  // p3 = -4x^6 + 2x^5 - 5x^3.
      APolynomial p4 = new NonConstPoly (3.0, 2, pc1);  // p4 = 3x^2 - 1.
      APolynomial p5 = new NonConstPoly (-2.0, 5, p4);  // p5 = -2x^5 + 3x^2 -1.
      System.out.println ("0  = " + pc0);
      System.out.println ("-1 = " + pc1);
      System.out.println ("3x^2 - 1  = " + p4);
      System.out.println ("-5x^3 + 0 = " + p1);
      System.out.println ("2x^5 - 5x^3 + 0          = " + p2);
      System.out.println ("-4x^6 + 2x^5 - 5x^3 + 0  = " + p3);
      System.out.println ("-4x^6 - 5x^3 + 3x^2 - 1  = " + p5.add (p3));
   }
}