옹알이 (2) (연습문제)

원본 : https://school.programmers.co.kr/learn/courses/30/lessons/133499

프로그래머스

 

풀이

class Solution {
    public int solution(String[] babbling) {
        int cnt = 0;

        for (String str : babbling) {
            StringBuilder sb = new StringBuilder(str.replaceAll("aya", "aya,").replaceAll("ye", "ye,")
                    .replaceAll("woo", "woo,").replaceAll("ma", "ma,"));

            if (sb.charAt(sb.length() - 1) != ',') {
                continue;
            }

            String[] wordArr = sb.toString().split(",");
            int correct = 0;

            for (int i = 0; i < wordArr.length; i++) {
                String word = wordArr[i];

                if (word.equals("aya") || word.equals("ye") || word.equals("woo") || word.equals("ma")) {
                    if (i > 0) {
                        if (!word.equals(wordArr[i - 1])) {
                            correct++;
                        }
                    } else {
                        correct++;
                    }
                }
            }

            if (correct == wordArr.length) {
                cnt++;
            }
        }

        return cnt;
    }
}