LAB: Count multiples (EO)
Complete a program that creates an object of the Count class, takes three integers as input: low, high, and x, and then calls the countMultiples() method. The countMultiples() method then returns the number of multiples of x between low and high inclusively.
Ex: If the input is:
1 10 2
countMutiples() returns and the program output is:
5
Hint: Use the % operator to determine if a number is a multiple of x. Use a for loop to test each number between low and high.
Note: Your program must define the method:
public int countMultiples(int low, int high, int x)
Count.java
1 import java.util.Scanner;
2
3 public class Count {
4
5 public int countMultiples(int low, int high, int x) {
6 /* Type your code here. */
7
8 }
9
10 public static void main(String[] args) {
11 Scanner scnr = new Scanner(System.in);
12 /* Type your code here. */
13 }
14)
15

Respuesta :

Following are the Java Program to the given question:

import java.util.Scanner; //import package for user-input

public class Count  //defining a class Count  

{

   public static int countMultiples(int low,int high,int x)//defining a method countMultiples that takes three integer parameters

   {  

       int c=0,i; //defining integer variables that hold value

       for(i=low;i<=high;i++)//defining loop that iterates value between low and high  

       {  

           if(i%x==0)//defining if block that uses % operator to check value

           {

               c+=1; //incrementing c value

           }

       }

       return c; //return c value

   }

   public static void main(String[] args)//main method  

   {  

       int l,h,x;//defining integer variable

       Scanner scnr=new Scanner(System.in); //creating scanner class object  

       l=scnr.nextInt(); //input value

       h=scnr.nextInt();//input value

       x=scnr.nextInt();//input value

       System.out.println(countMultiples(l,h,x)); //calling method and print its value

   }

}

Output:

Please find the attached file.

Program Explanation:

  • Import package.
  • Defining a class "Count", and inside the class two method "countMultiples and main method" is declared.
  • In the "countMultiples" method three integer parameter that are "low, high, and x".
  • Inside this method a for loop is declared that uses the parameter value and use conditional statement with the % operator and check and return its values.
  • Inside the main method three integer variable is declared that uses the scanner class to input the value and pass to the method and print its calculated value.  

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