[BOJ] 4659 비밀번호 발음하기 (JAVA)

https://www.acmicpc.net/problem/4659

4659번: 비밀번호 발음하기

import java.io.BufferedReader;
import java.io.InputStreamReader;

public class Main {
	
    public static void main(String[] args) throws Exception {

        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringBuilder sb = new StringBuilder();

        while (true) {

            String input = br.readLine();

            if ("end".equals(input)) break;

            boolean flag = true;
            int moCnt = 0;
            int mo = 0;
            int ja = 0;
            char pre = '1';

            for (int i = 0; i < input.length(); i++) {

                char c = input.charAt(i);

                if (c == 'a' || c == 'e' || c == 'i' || c == 'o' || c == 'u') {
                    moCnt++;
                    ja = 0;
                    if (++mo == 3) flag = false;
                    if (pre == c && (c != 'e' && c != 'o')) flag = false;
                } else {
                    mo = 0;
                    if (++ja == 3) flag = false;
                    if (pre == c) flag = false;
                }

                if (!flag) break;
                pre = c;

            }

            if (flag && 0 < moCnt) sb.append("<" + input + "> is acceptable.\n");
            else sb.append("<" + input + "> is not acceptable.\n");

        }

        System.out.print(sb.toString());

    }

}