Question

Write in Java Implement the parse method and test it by calling with three different strings and by printing the results. The Scanner method can be used to read values from strings, files, or System.in. We need to invoke the useDelimiter method to define what symbols can separate, or terminate, the digits of a Fraction. public static Fraction parse(String input) t Scanner s new Scanner(input) useDelimitercTVMitln"); int num s.nextlnt() int denom s.nextlnt); s.close): return new Fraction(num, denom) class Codechef static class Fraction private int numerator, denominator, instance variables only accessible in class public String toStringo return pumerator+denominator; public static void main (Stringl args) throws java.lang.Exception Fraction f- new Fraction: note: variables always have a default initialization System.out.printin(f); Iinote: f.toString() is called automatically

Answer 1

Thanks for posting the question, we are glad to help you. Here is the implemented parse() method. I have demonstrated how you can use space, *, newline, tab as separator to seperate into 2 numbers and return a Fraction class object.

// use the below pattern to split a line using space, newline, tab backslash or * character

s.useDelimiter(" |/|\n|\t|\*");

Refer the screenshot for the output

Thank you !

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import java.util.Scanner;

public class Codechef {

   static class Fraction {

      private int numerator, denominator;

      public Fraction(int num, int denom) {
         // TODO Auto-generated constructor stub
         numerator = num;
         denominator = denom;
      }

      public String toString() {
         return numerator + "/" + denominator;
      }

   }

   public static Fraction parse(String input) {

      Scanner s = new Scanner(input);

// use the below pattern to split a line using space, newline, tab backslash or * character
      s.useDelimiter(" |/|\n|\t|\*");

      int num=Integer.parseInt(s.next().trim());
      int denom=Integer.parseInt(s.next().trim());
      

      s.close();
      return new Fraction(num, denom);

   }

   public static void main(String[] args) {

      Fraction tabSeparator = parse("2  5");
      System.out.println(tabSeparator);
      
      Fraction newLineSeparator = parse("12
65");
      System.out.println(newLineSeparator);
      
      Fraction spaceSeparator = parse("37 99");
      System.out.println(spaceSeparator);
      
      Fraction starSeparator = parse("1*7");
      System.out.println(starSeparator);

   }

}
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