Add all the digits of a given positive integer until the result has a single digit
Add all the digits of a given positive integer until the result has a single digit
Add all the digits of a given positive integer until the result has a single digit
Program
import java.util.Scanner;
public class Main {
public static void main(String[] arg) {
Scanner in = new Scanner(System.in);
System.out.print("Input a positive integer Number: ");
int n = in.nextInt();
if (n > 0) {
System.out.print("The single digit number is: " + (n == 0 ? 0 : (n % 9 == 0 ? 9 : n % 9)));
}
System.out.println("\n\n");
}
}
Output:
Input a positive integer Number: 1234
The single digit number is: 1
Input a positive integer Number: 24
The single digit number is: 6
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