더 좋은 풀이 있으면 공유하십시오.


  1. package myTest;
  2.  
  3. public class Test {
  4. public static void main(String[] args) {
  5. Test test = new Test();
  6. System.out.println(test.hideNumber("01012345678"));
  7. System.out.println(test.hideNumber("0111239876"));
  8. }
  9.  
  10. public String hideNumber(String s) {
  11. return s.substring(0, s.length()-4) + "****";
  12. }
  13. }