/**
 * Term models terms in a polynomial. 
 * 
 * @author Lyndon While
 * @version 1.0
 */
public class Term
{
    // the term = coefficient * x ^ exponent
    private double coefficient;
    private int    exponent;

    public Term(double c, int e)
    {
        coefficient = c;
        exponent = e;
    }
    
    // returns the coefficient
    public double getCoefficient()
    {
        return coefficient;
    }
    
    // returns the exponent
    public int getExponent()
    {
        return exponent;
    }

    // returns the term as a simple String for display: 
    // sign + coefficient + x^ + exponent 
    public String displaySimple()
    {
        // TODO
        String sign; 
        if (coefficient < 0) sign = "- "; 
        else                 sign = "+ ";
        return sign + Math.abs(coefficient) + "x^" + exponent; 
    }

    // returns the term as a String for display: 
    // see the sample file and the test program for the layout required 
    public String displayImproved()
    {
        // TODO
        if (coefficient == 0) return "0";
        String soln; 
        if (coefficient <  0) soln = "- ";
        else                  soln = "+ ";
        double c = Math.abs(coefficient);
        String cs;
        if (c == (int)c) cs = "" + (int) c;
        else             cs = "" + c; 
        if (exponent == 0) return soln + cs;
        if (c != 1) soln += cs;
        soln += "x";
        if (exponent == 1) return soln;
        else               return soln + "^" + exponent;
    }
}