I have main class that asks the user to input fractions I ha

I have main class that asks the user to input fractions. I have Fraction class that takes the fractions from user and check i they are valid, and reduce. And I have a Quicksort class that sorts all the fractions.

User input can be: 1/2 1 3/4 7/6 0/5 ....

sort is a public function in Quicksort that takes an array of fractions as argumet: sort(Fraction[ ] frac_Array);

My question is: How can i save the fractions in an array to pass it to sort?

//Main
    public static void main(String[] args) {
        print_header(); // Print Header

        Scanner scan = new Scanner(System.in);

        // Accept fractions from user
        System.out.print(\"\ Enter your fractions: \");
        String string_input = scan.nextLine();

        String[] stringArray = string_input.split(\" \");

        for (int i = 0; i < stringArray.length; i++) {
            int num, denom;
            Fraction frac;
            Fraction[] fracArray = {};
           
            if (stringArray[i].contains(\"/\")) {

                String[] numDenom = stringArray[i].split(\"/\");

                num = Integer.parseInt(numDenom[0]);
                denom = Integer.parseInt(numDenom[1]);
                frac = new Fraction(num, denom);
            } else {
                num = Integer.parseInt(stringArray[i]);
                denom = 1;
                frac = new Fraction(num, denom);
            }
           fracArray[i] = frac; // <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
        }
    }
}

Solution

Please follow the code and comments for description :

CODE :

a) Fraction.java :

public class Fraction implements Comparable<Fraction> {

private int numerators, denominators;

// Constructors
public Fraction() { // default
numerators = 0;
denominators = 1;
}

public Fraction(int n, int d) { // with parameters
this.numerators = n; // this is the member variable
this.denominators = d;
}

// method for conversion to string
@Override
public String toString() {
return (\"Decimal Value of the Fraction (\" + numerators + \"/\" + denominators + \")=\" + (double) numerators / (double) denominators);
}

// this implements Comparable
@Override
public int compareTo(Fraction o) {
double x = (double) numerators / (double) denominators;
double y = (double) o.numerators / (double) o.denominators;
if (x < y) {
return -1;
}
if (x > y) {
return 1;
}
return 0;
}
}

b) FractionArray.java :

import java.util.Arrays; // for sorting
import java.util.Scanner;
import java.util.StringTokenizer;

class FractionSort {

public static void main(String[] argv) {

Fraction[] fracArray = new Fraction[7];
Scanner sc = new Scanner(System.in); // scanner that takes input from the command line
String input = sc.nextLine();
StringTokenizer st = new StringTokenizer(input, \" \"); // tokenizer that splits based on the spaces

for (int i = 0; i < fracArray.length; i++) { // iterating over the length of the arrays
int count = 0; // required initialisations
if (count < st.countTokens()) { // checking for the tokens in the strin tokniser
int numerator = 0; // variable to store numerator on each iteration
int denominator = 0; // variable to store denominator on each iteration
Fraction frac;
String inToken;
inToken = st.nextToken();

if (inToken.contains(\"/\")) { // checking if is a fractionor not
String[] numDenom = inToken.split(\"/\"); // splitting based on the symbol
numerator = Integer.parseInt(numDenom[0]); // saving the numerator
denominator = Integer.parseInt(numDenom[1]); // saving the denominator
frac = new Fraction(numerator, denominator); // adding it to the fraction class
fracArray[i] = frac; // summing it to the array
} else {
numerator = Integer.parseInt(inToken);
denominator = 1;
frac = new Fraction(numerator, denominator);
fracArray[i] = frac;
}
}
count++; // incrementing the index count value
}

// printing the entered fractions
System.out.println(\"The Entered Fractions are : \");
for (int i = 0; i < fracArray.length; i++) {
System.out.println(fracArray[i]);
}

// sorting the fractions using Comparable interface
Arrays.sort(fracArray);

// printing the sorted fractions
System.out.println(\"\ The Sorted Fractions are : \");
for (int i = 0; i < fracArray.length; i++) {
System.out.println(fracArray[i]);
}
}
}

OUTPUT :

1/8 2 1/5 0/5 6/8 9/7 4/5
The Entered Fractions are :
Decimal Value of the Fraction (1/8)=0.125
Decimal Value of the Fraction (2/1)=2.0
Decimal Value of the Fraction (1/5)=0.2
Decimal Value of the Fraction (0/5)=0.0
Decimal Value of the Fraction (6/8)=0.75
Decimal Value of the Fraction (9/7)=1.2857142857142858
Decimal Value of the Fraction (4/5)=0.8

The Sorted Fractions are :
Decimal Value of the Fraction (0/5)=0.0
Decimal Value of the Fraction (1/8)=0.125
Decimal Value of the Fraction (1/5)=0.2
Decimal Value of the Fraction (6/8)=0.75
Decimal Value of the Fraction (4/5)=0.8
Decimal Value of the Fraction (9/7)=1.2857142857142858
Decimal Value of the Fraction (2/1)=2.0

Hope this is helpful.