/*
 * Copyright 2017 haeun kim
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package algorithm.boj;

import java.io.*;

/**
 * Created by haeun on 2017-09-26
 * Site       : https://www.acmicpc.net/problem/1110
 */

public class Boj1110 {

    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        int n = Integer.parseInt(br.readLine());
        int n1 = n;
        int tmp;
        int m = 0;
        int count = 0;
        while(true){
            tmp = n/10 + n%10;
            if(tmp < 10){
                m = (n%10)*10 + tmp;
            }else{
                m = (n%10)*10 + tmp%10;
            }

            count++;
            if(n1 == m){
                break;
            }

            n = m;
        }
        System.out.println(count);
    }

}

Solve No.1110 from Baekjoon Online Judge
Solve No.1110 from Baekjoon Online Judge
