[프로그래머스/자바] 로그인 성공?

class Solution {
    public String solution(String[] id_pw, String[][] db) {
        for (int i = 0; i < db.length; i++) {
            if (db[i][0].equals(id_pw[0])) {
                if (db[i][1].equals(id_pw[1])) return "login";
                else return "wrong pw";
            }
        }
        
        return "fail";
    }
}