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POAddition, Subtraction, Multiplication, & Division with Fractions in Java (Homework)
 

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  1. POAddition, Subtraction, Multiplication, & Division with Fractions in Java (Homework)
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    <p>I have written this code as my answer to an assignment I recieved in AP Computer Science, and my teacher is having my redo this because the answers don't work. I can only compile it on my machine, so I am relying on my teacher as to what results is produces now, which are below. This assignment is do by midnight, tonight, and the procrastinator I am waited till now to ask for help here, but still, it is VERY much appreciated. Also, it's my first time on here, so sorry that some of the code isn't formatted properly. Thanks for the help!</p> <p>Results ATM</p> <pre><code>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 </code></pre> <p>Here's the code.</p> <pre><code>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 &amp;&amp; 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()); } } </code></pre>
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    1. COI'm all for assisting with problems, but what specifically are you having difficulty doing on your own? Give us something specific and people will be more inclined to help with homework.
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      1. POAddition, Subtraction, Multiplication, & Division with Fractions in Java (Homework)
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    2. COYour math is wrong. Find out how to do those operations on fractions and implement them. Currently they don't make any sense.
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    3. COYou'll have to add intermediate print statements to find out where you're going wrong.
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