백준 1110 / 자바

www.acmicpc.net/problem/1110

1110번: 더하기 사이클

import java.util.Scanner;

public class Main {
   
	public static void main(String[] args) {
		
		Scanner scan = new Scanner(System.in);
		
		int N = scan.nextInt();

		int N1 = N;
		int newN = 0, C=1;
		
		newN= ( 10*(N%10) ) + ( N/10 + N%10 )%10;
		
		while(N!=newN) {
			N1 = newN;
			newN= ( 10*(N1%10) ) + ( N1/10 + N1%10 )%10;

			C++;
		}
		
		System.out.println(C);
		
		scan.close();
		
    }
}