Question

Write four overloaded methods called randomize. Each method will return a random number based on the parameters that it receives:

• randomize() - Returns a random int between min and max inclusive. Must have two int parameters.
• randomize() - Returns a random int between 0 and max inclusive. Must have one int parameter.
• randomize() - Returns a random double between min and max. Must have two double parameters.
• randomize() - Returns a random double between 0 and max. Must have one double parameter.

Because these methods are overloaded, they should be declared in the same class, so there is only one code-runner to test all four methods.

In accordance to the assignment; How do I fix this code, meaning what is the fixed version of the current code I have now.

import java.util.Scanner;

class Lesson_35_Activity {
  
    //returns random int b/t min and max inclusive; has 2 int parameters
    public static int randomize(int min, int max) 
    {
      int x = (int)(Math.random() * ((max - min) + 1)) + min;
      return x;
    }
    
    //returns random int b/t 0 and max inclusive; has one int parameter
    public static int randomize(int max) 
    {
      int x = (int)(Math.random() * (max + 1));
      return x;
    }
    
    //returns random double b/t min and max inclusive; two double parameters
    public static double randomize(double min, double max) 
    {
      double x = (double)(Math.random() * ((max - min) + 1)) + min;
      return x;
    }
    
    //returns random double b/t 0 and max inclusive; has one double parameter. 
    public static double randomize(double max) 
    {
      double x = (double)(Math.random() * (max + 1));
      return x;
    }
     
    public static void main(String[] args)
     {
      Scanner scan = new Scanner(System.in);
      
      int mi = scan.nextInt();
      int ma = scan.nextInt();
      
      System.out.println(randomize(mi, ma));
      System.out.println(randomize(0, ma));  
      
      double mii = mi;
      double maa = ma; 
      
      System.out.println(randomize(mii, maa));
      System.out.println(randomize(0, maa));
    }
}

Answer 1

Dear Student ,

As per requirement submitted above kindly find below solution.

Lesson_35_Activity.java :

//import package
import java.util.Scanner;

//Java class
class Lesson_35_Activity {

   // returns random int b/t min and max inclusive; has 2 int parameters
   public static int randomize(int min, int max) {
       int x = (int) (Math.random() * ((max - min) + 1)) + min;
       return x;
   }

   // returns random int b/t 0 and max inclusive; has one int parameter
   public static int randomize(int max) {
       int x = (int) (Math.random() * (max + 1));
       return x;
   }

   // returns random double b/t min and max inclusive; two double parameters
   public static double randomize(double min, double max) {
       double x = (double) (Math.random() * ((max - min) + 1)) + min;
       return x;
   }

   // returns random double b/t 0 and max inclusive; has one double parameter.
   public static double randomize(double max) {
       double x = (double) (Math.random() * (max + 1));
       return x;
   }

   // main method, which is entry point of the program
   public static void main(String[] args) {
       // object of Scanner class
       Scanner scan = new Scanner(System.in);
       // asking min and max number
       System.out.print("Enter min number : ");
       int mi = scan.nextInt();// reading min number
       System.out.print("Enter max number : ");
       int ma = scan.nextInt();// reading max number
       // checking number
       if (mi < ma) {
           System.out.println(randomize(mi, ma));// method call
           System.out.println(randomize(0, ma));// method call

           double mii = mi;
           double maa = ma;

           System.out.printf("%.2f", randomize(mii, maa));
           System.out.printf("\n%.2f", randomize(0, maa));
       } else {
           // when minimum number is greater than maximum number then display
           System.out.println("Enter min number " + mi + " should be less than max " + ma);
       }
   }
}

==================================

Output :Compile and Run Lesson_35_Activity.java to get the screen as shown below

Screen 1:Lesson_35_Activity.java , screen when second number is less than first number

Screen 2:Screen showing random numbers

NOTE :PLEASE FEEL FREE TO PROVIDE FEEDBACK ABOUT THE SOLUTION.