문제 & 예시
소스코드
// 핸드폰 번호 가리기
class test04 {
public static void main(String[] args) {
Solution4 sol = new Solution4();
String phone_number = "01033334444";
System.out.println(sol.solution(phone_number));
}
}
class Solution4 {
public String solution(String phone_number) {
String answer = "";
String front = "";
String back = "";
front = phone_number.substring(0, phone_number.length()-4);
back = phone_number.substring(phone_number.length()-4, phone_number.length());
for(int i=0;i<front.length();i++) {
answer += "*";
}
answer = answer + back;
return answer;
}
}