import java.util.*;

class Main
{
public static void main(String[] args)
{
String name;
String phone;
String address;
String newName;
int sel;


LinkedList n1 = new LinkedList();


while(true)
{
System.out.println("1. 추가");
System.out.println("2. 검색");
System.out.println("3. 삭제");
System.out.println("4. 오른쪽에 추가");
System.out.println("5. 왼쪽에 추가");
System.out.println("6. 출력");
System.out.println("7. 종료");

Scanner keyboard = new Scanner(System.in);
System.out.print("메뉴를 선택하세요 : ");
sel = keyboard.nextInt();
System.out.println();