옹알이 (1)

class Solution {
    public int solution(String[] babbling) {
        int answer = 0;
        String[] word = {"aya", "ye", "woo", "ma"};
        String str;
        
        for(int i=0; i<babbling.length; i++) {
            for(int j=0; j<word.length; j++) {
                if(babbling[i].contains(word[j])){
                    babbling[i] = babbling[i].replace(word[j], "0");
                }
            }
            
            str = babbling[i].replace("0", "");
            if(str.equals(""))
                answer++;
        }
        return answer;
    }
}