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Thread: Using Euclid's algorithm in a Fraction Class

  1. #1
    Junior Member
    Join Date
    Nov 2012
    Thanked 1 Time in 1 Post

    Default Using Euclid's algorithm in a Fraction Class

    I am trying to use Euclid's Algorithm in a fraction class. I am not finished with the class yet so there are parts that are incomplete. I am unsure of how I would use the method. Would I put in the setter methods? or Public fraction (int n, int d)?

    public class Fraction{
        private int numerator;
        private int denominator; 
        int gcd;
        public Fraction(){
        public Fraction(int n, int d){
        public static int gcd(int p, int q) {
            if (q == 0) return p;
            else return gcd(q, p % q);
        public String toString(){
            return String.format("%d/%d", getNumerator(), getDenominator());
        public boolean equals(Object otherObject){
            if(otherObject == null){
                return false;
                    return false;
                    Fraction otherFraction = (Fraction) otherObject; 
                    return getNumerator()== otherFraction.getNumerator() && 
                           getDenominator()== otherFraction.getDenominator();
        public int getNumerator(){
            return numerator;
        public void setNumerator(int newNumerator){
            numerator = newNumerator/gcd;
        public int getDenominator(){
            return denominator ;
        public void setDenominator(int newDenominator){
            if(newDenominator == 0 ){
                throw new IllegalStateException(String.format("Illegal denominator: %d", newDenominator));  
            } else{
                denominator = newDenominator;

  2. #2
    Member Chris.Brown.SPE's Avatar
    Join Date
    May 2008
    Fort Wayne, Indiana
    Thanked 31 Times in 31 Posts

    Default Re: Using Euclid's algorithm in a Fraction Class

    I'm not sure where you're going with this. It seems like you have a good start on it in your gcd method. You mention putting it in the setter methods or the constructor, what are you really trying to do with the algorithm? If you could give us a flow of what you're trying to accomplish it would be easier to help.

    1. Create fraction
    2. Call Euclid's Algorithm
    3. Display answer
    Writing code is your job, helping you fix and understand it is mine.

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