Question

w e it, it's safer to stay in Protected View Enable Editing MAC 286 Please submit your work as.java file on the blackboard. Write a method using the prototype below, that returns the sum of the digits of the integer specified as an argument. Obviously, this method should use recursion. int sumo Digits (int x); If x is 234, the function should return 2+3+4, that is, 9. If x is 12, the function should return I + 2, which is 3. If x is 39, the function should return 12. If x is negative, ignore the minus sign. For example, -12 and 12 both return 3. Use recursion.

Answer 1

Answer:

import java.util.Scanner;
public class Main
{
public static void main(String[] args)
{
int x;
Scanner s = new Scanner(System.in);
System.out.print("Enter the number >>>"); // taking input from user
x = s.nextInt();
Main obj = new Main(); // creating an object
int result = obj.sumOfDigits(x); // calling method
System.out.println("Sum of the digits is >>>"+result); // printing the result
}
int sumOfDigits(int x) // called methos
{
if(x == 0) // base case in recursion
{
return 0;
}
if(x<0) // condition for negative numbers
{
x=-x;
}
if(x<=9 && x>0) // condition for single digit number
{
return x;
}
else // recursion to find sum of digits
{
return (x%10) + sumOfDigits(x / 10);
}

}
}

1 import java.util.Scanner; 2 public class Main public static void main(String[] args) int x; Scanner s = new Scanner(System.in); System.out.print("Enter the number >>>"); // taking input from user x = s.nextInt(); Main obj = new Main(); // creating an object int result = obj.sumOfDigits(x); // calling method System.out.println("Sum of the digits is >>>"+result); // printing the result

int sumOfDigits(int x) { if(x == 0) // called method // base case in recursion return 0; if(x<0) // condition for negative numbers X=-X; if(x<=9 && x>0) // condition for single digit number return x; else // recursion to find sum of digits return (x%10) + sumOfDigits(x / 10); 31 } 32 }

output:

Enter the number >>>123 Sum of the digits is >>>6

Enter the number >>>39 Sum of the digits is >>>12

Enter the number >>>-1234 Sum of the digits is >>>10