Question

Instructions

Write a Java code

• Your goal is to take N integer inputs from the user -- N's value will be given by the user as well.
  • You can assume the user provides a valid value for N, i.e., >0.
• Store the input integers in an array of size N in the order they are provided.
  • These tasks should be done in the main() method.
• Create a new method called checkArray() that will take the previously created array as input from main().
• Decide whether each member of the array is a multiple of 15 and 20 or not.
• And, print the decision in the same way as shown below.
• You can use the code structure given below.
• If you do not follow any of the instructions, you will lose points.

Code Structure

main(){

N = take input from user;

arr = create a N-size array.

populate the array with user inputs.

call the checkArray() method and send arr.

}

checkArray(){

for each array member of arr, check if it is a multiple of 15 and 20 or not.

print the results.

}

Sample Output

• Your output should look exactly like the following; otherwise, you will lose points.

What is the size of the array? 3

Give me 3 numbers. 10 20 15

10: !MULT15: !MULT20

20: !MULT15: MULT20

15: MULT15: !MULT20

Answer 1

Have a look at the below code. I have put comments wherever required for better understanding.

import java.util.*;

class Main {
  // create the checkArray function
  public static void checkArray(int[] arr, int n){
    // loop in through the array
    for(int i=0;i<n;i++){
      // check if number is divisible by both 15 and 20
      if ((arr[i]%15==0)&&(arr[i]%20==0)){
        System.out.println(arr[i]+":"+"MULT15"+":" + "MULT20");
      }
      // check if number is divisible by 15 but not 20
      if ((arr[i]%15==0)&&(arr[i]%20!=0)){
        System.out.println(arr[i]+":"+"MULT15"+":" + "!MULT20");
      }
      // check if number is divisible by 20 but not 15
       if ((arr[i]%15!=0)&&(arr[i]%20==0)){
        System.out.println(arr[i]+":"+"!MULT15"+":" + "MULT20");
      }
      // check if number is not divisible by both 15 and 20
       if ((arr[i]%15!=0)&&(arr[i]%20!=0)){
        System.out.println(arr[i]+":"+"!MULT15"+":" + "!MULT20");
      }
    }



  }
  public static void main(String[] args) {
    // create scanner object for user input
    Scanner sc = new Scanner(System.in);
    // create variable for n
    int n;
    // take user input for n
    n = sc.nextInt();
    // create an array of size n
    int arr[] = new int[n];
    // populate the array
    for (int i=0;i<n;i++){
      arr[i] = sc.nextInt();
    }
    // call the checkArray function
    checkArray(arr,n);
  }
}

Happy Learning!