Contact List

import java.util.*;
import java.util.concurrent.DelayQueue;

public class changeName {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        List<String> names = new ArrayList<>();
        String [] parts = scanner.nextLine().split("\\s+");
        for (int i = 0; i < parts.length; i++) {
            names.add(parts[i]);
            }
        String command = scanner.next();
         while(!command.equals("Print")){

             if(command.equals("Add")){
                 command = scanner.next();
                if(!names.contains(command)){
                    names.add(command);
                }
                else{
                    int commandIndex = scanner.nextInt();
                    if(commandIndex>0 && commandIndex < names.size()){
                        names.add(commandIndex,command);
                    }
                }
             }

             else if(command.equals("Remove")) {
                 int commandIndex = scanner.nextInt();
                 if (commandIndex > 0 && commandIndex < names.size()) {
                     names.remove(commandIndex);
                 }
             }

                 else if (command.equals("Export")) {
                 int startIndex = scanner.nextInt();
                 int count = scanner.nextInt();
                 for (int i = startIndex; i < count ; i++) {
                     if(count>names.size()){
                         count = names.size();
                     }
                     System.out.print(names.get(i) + " ");

                 }
                 System.out.println();

                 }
             command = scanner.next();

             }

        command = scanner.next();
         if(command.equals("Normal")){
             System.out.print("Contacts: ");
           System.out.print(String.join(" ", names));
         }
        else if(command.equals("Reversed")){
             Collections.reverse(names);
             System.out.print("Contacts: ");
             System.out.print(String.join(" ", names));
         }

       }




         }