辅导Java Polynomial models polynomials 编程、Java设计辅导留学生

/**
* Polynomial models polynomials.
*
* @author Lyndon While
* @version 1.0
*/
import java.util.ArrayList;
public class Polynomial
{
// the terms making up the polynomial
private ArrayList polynomial;
// creates a zero polynomial
public Polynomial()
{
polynomial = new ArrayList();
}

// returns the number of terms in polynomial
public int numberOfTerms()
{
return polynomial.size();
}

// adds a new term to the end of polynomial
public void addTerm(Term t)
{
polynomial.add(t);
}
// returns the indicated term of polynomial
public Term getTerm(int k)
{
if (0 <= k k < numberOfTerms()) return polynomial.get(k);
else return null;
}

// returns polynomial as a String for display
// see the sample file and the test program for the layout required
public String displayPolynomial()
{
// TODO
return "";
}
}