[ 백준 ] 1110- 더하기 사이클 ( Java 이용 )

 

 

import java.util.Scanner;
 
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int originN;
        originN = sc.nextInt();
        if(originN==0)
            System.out.println(1);
        else {
            // 10보다 작은 수는 뒤에 0 을 붙여 2자리 수로 만든다.
            if(originN < 10)
                originN = originN*10;
 
            int newNum = originN;
            int count = 0;
            int front = originN/10;
            int back = originN%10;
 
            int calNum = front + back;
            if(calNum >= 10)
                calNum = calNum %10;
            newNum = back * 10 + calNum;
            count++;
 
 
            while( newNum != originN) {
                front = newNum/10;
                back = newNum%10;
//                System.out.println("front = " + front);
//                System.out.println("back = " + back);
 
                calNum = front + back;
                if(calNum >= 10)
                    calNum = calNum %10;
//                System.out.println("calNum = " + calNum);
                newNum = back * 10 + calNum;
//                System.out.println("newNum = " + newNum);
                count++;
 
            }
 
            System.out.println(count);
        }
    }
 
}