The factors of a positive integer number are those numbers that divide N evenly.

Question

The factors of a positive integer number are those numbers that divide N evenly. The factors of 14 are:1, 2, 7, 14. Write a function copuntFactors accepts a positive integer number as its parameters and returns the count of its factors as defined here (the call countFactors[14] returns 4). The function header is given. You must declare any local variables you need. static int countFactors (final int n) { } // end function Write a main function that prompts for and reads an integer number > 1 from the user. It tells the user whether the number entered is a prime number or not. The 'main' function must call the function from the previous question. It must not have a loop. Declare any local variables you need. public static void main (String[] args) { //declare variables necessary //prompt for and get the number from the user //Generate the output required, must use the given if ( __________ ) out.println ("Your input number is prime"); else out println ("Your input number is not prime"); }//end main

Explanation / Answer

Find the Answers below. I mentioned the program code with output.

2.

import java.util.Scanner;

public class CountFactors {
   public static void main(String[] args) {
       System.out.println("Enter the N");
       Scanner s = new Scanner(System.in);
       int N = s.nextInt(); //To get the input from the user
       System.out.println(countFactors(N)); //Calling the countFactors method
   }
  
   static int countFactors(final int n){
       int count = 0;
       if(n > 0){
           for (int i = 1; i <= n; i++) {
               if(n % i ==0){ //To check if the number gives modulo 0 or not
                   count++;
               }
           }
       }
       return count;
   }
}

OUTPUT:

Enter the N
14
4

3. import java.util.Scanner;

public class Prime {
   public static void main(String[] args) {
       System.out.println("Enter the Number");
       Scanner s = new Scanner(System.in);
       int n = s.nextInt(); // To get the input from the user
       if (n > 1) {
           int m = n / 2;
           for (int i = 2; i <= m; i++) {
               if (n % i != 0) {
                   System.out.println("Your input number is prime");
               } else {
                   System.out.println("Your input number is not prime");
               }
               break;
           }
       }
   }
}

OUTPUT:

1. Enter the Number
10
Your input number is not prime

2. Enter the Number
7
Your input number is prime

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