我已将此代码编写为我在AP Computer Science中收到的作业的答案,而我的老师正在重做此操作,因为答案不起作用。我只能在我的机器上编译它,所以我要依靠老师确定现在产生的结果如下。这项工作是在今晚午夜之前完成的,我等到现在的拖延症患者在这里寻求帮助,但还是非常感谢。另外,这是我第一次来,很抱歉,某些代码的格式不正确。谢谢您的帮助!

结果ATM

if a = 3/4 and b = 5/6

a.add(b) produces 35/24; This should be 19/12
a.subtract(b) produces 1/0; This should be -1/12
a.divide(b) produces 11/1; This should be 9/10
a.multiply(b) produces 6/-5; This should be 5/8


这是代码。

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

import javax.swing.border.TitledBorder;

class Fraction{
    private int numer;
    private int denom;
    private Fraction answer;

    //Definition
    public Fraction(int num, int den)
    {
        numer = num;
        denom = den;
        simplify();
    }


    //Simplify
    void simplify()
    {
        int gcd = findGCD(numer, denom);
        numer /= gcd;
        denom /= gcd;
    }


    //GCD Function
    int findGCD(int a, int b)
    { int temp;
        while(b != 0)
        {
            temp = b;
            b = a % b;
            a = temp;
        }
        return a;
    }


    //GetNumerator
    public int getNumer()
    {
        return numer;
    }

    //GetDenominator
    public int getDenom()
    {
        return denom;
    }

    //Fraction Add Method
    Fraction add(Fraction x)
    {
        Fraction answer;

        if(denom == x.denom)
        {
            answer = new Fraction(x.numer + numer, denom);
            }
        else
        {
          int den = denom * x.getDenom();
          int num = numer * x.getNumer();
          num += x.getNumer() * denom;
          answer = new Fraction(num, den);

        }
     return answer;
    }


    //Fraction Subtract Method
    Fraction subtract(Fraction x)
    {
        Fraction answer;

        if(x.denom == denom)
        {
            answer = new Fraction(numer - x.numer, denom);
        }
        else
        {
            int den = denom / x.getDenom();
            int num = numer / x.getNumer();
            num -= x.getNumer() * denom;
            answer = new Fraction(num, den);
        }
        return answer;
    }

    //Fraction Multiply Method
    Fraction multiply(Fraction x)
    {
        Fraction answer;

        if(x.denom == denom)
        {
            answer = new Fraction(numer + x.numer, denom);
        }
        else
        {
            int den = denom + x.getDenom();
            int num = numer + x.getNumer();
            num -= x.getNumer() * denom;
            answer = new Fraction(num, den);
        }
        return answer;
    }

    //Fraction Divide Method
    Fraction divide(Fraction x)
    {
        Fraction answer;

        if(x.denom == denom)
        {
            answer = new Fraction(numer - x.numer, denom);
        }
        else
        {
            int den = denom - x.getDenom();
            int num = numer - x.getNumer();
            num -= x.getNumer() * denom;
            answer = new Fraction(num, den);
        }
        return answer;
    }


    //@Override
    public boolean equals(Fraction x)
    {
        boolean answer = false;

        if(numer == x.numer && denom == x.denom)
      {
            answer = true;
        }

        return answer;
    }


    //ToString
    public String toString()
    {
    return (Integer.toString(numer) + "/" +
             Integer.toString(denom));
    }


    //Main Method
    public void main(String[]args)
    {
        Fraction a = new Fraction(3,4);
        Fraction b = new Fraction(5,6);
        System.out.println(a.toString());
        System.out.println(b.toString());

        Fraction c = a.add(b);
        System.out.println(c.toString());

        c = a.subtract(b);
        System.out.println(c.toString());

        c = a.divide(b);
        System.out.println(c.toString());

        c = a.multiply(b);
        System.out.println(c.toString());





    }

}

最佳答案

因此,开始就只有一件事:一直使用getDenom(),因为在您的代码中有时是getDenom,有时是denom所以..

对于add()方法:
在标称不同的情况下,您错了。
你所要做的 :

denom = this.getDenom() * x.getDenom();
num = this.getNum() * x.getDenom() + x.getNumer() * this.getDenom();
//and check if simplification is possible.
return new Fraction(num,denom);


对于其他操作来说,这是相同的事情。检查您是否乘以良好的分母或分子,因为事实并非如此,并且不要忘记简化。

希望能帮助到你

关于java - Java中的分数加法,减法,乘法和除法(作业),我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/8453485/

10-13 04:33