백준 2231(JAVA) - 분해합

package 브루트포스;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

public class 분해합 {
	public static void main(String[] args) throws Exception{
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
		int N = Integer.parseInt(br.readLine());
		int result = solution(N);
		bw.write(result + "\n");
		bw.flush();
		bw.close();
	}
	static int solution(int N) {
		int originalNum = N;
		int result = 0;
		while(N > 0) {
			N--;
			int tmpNum = N;
			int modNum = N;
			while(modNum > 0) {
				tmpNum += modNum % 10;
				modNum /= 10;
			}
			if(tmpNum == originalNum) {
				result = N;
			}
		}
		return result;
	}
}