import java.util.*;
 public class StudentList {
 public static void main(String[] args)
{
    Student st = new Student("007","Chutimaphon",4.00);
    Student st1 = new Student("061","Hathaichanok",3.37);
    Student st2 = new Student("004","Jiratchaya",3.35);
    StudentList stlist = new StudentList();
    stlist.addstudent(st);
    stlist.addstudent(st1);
    stlist.addstudent(st2);
    System.out.println("Show all students after add");
    System.out.println(stlist.showAllStudentInfo());
    stlist.removeStudentBystCode("007");
    System.out.println("Show all students after remove");
    System.out.println(stlist.showAllStudentInfo());
    stlist.searchBystCode("061");
    System.out.println("Number of Student : "+
    stlist.getNumberofStudent() + " student");
  }
  private ArrayList<Student> stlist = new ArrayList<Student> ();
  private String info = "";
  public StudentList(){
  }
  public void addstudent(Student st){
    stlist.add(st);
  }
public void removeStudentBystCode(String c)
{
  for(int i = 0; i < stlist.size() ; i++)
     {
            if(stlist.get(i).getCode() == c)
             stlist.remove(i);
    }
  }
  public String showAllStudentInfo(){
    info = "";
    for(int i = 0; i < stlist.size() ; i++){
      info += (i+1)+". " + stlist.get(i).toString()+"\n";
    }
    return info;
  }

  public int getNumberofStudent(){
    return stlist.size();
  }
  public void searchBystCode(String c){
    for(int i = 0 ; i < stlist.size() ; i++){
       if(stlist.get(i).getCode() == c)
       {
         System.out.println("Found : "+stlist.get(i).getCode() +
         " " + stlist.get(i).getName() + " " + stlist.get(i).getGPA() + " ");
       }
    }
      }
}