View difference between Paste ID: 4kb0E570 and eDXWcrpP

 import java.util.*;
 import java.util.stream.Collectors;
 
 public class demo {
     public static void main(String[] args) {
         Scanner scanner = new Scanner(System.in);
         //[3,4,5,6]
         List<Integer> numbers = Arrays.stream(scanner.nextLine().split("\\s+"))
                 .map(Integer::parseInt).collect(Collectors.toList());
 
         String input = scanner.nextLine();
 
         while (!input.equals("end")) {
             //"Delete {element}" -> split -> ["Delete", "5"]
             //"Insert {element} {position}" -> ["Insert", "5", "3"]
             String command = input.split("\\s+")[0]; //Delete или Insert
             int element = Integer.parseInt(input.split("\\s+")[1]);
 
             if (command.equals("Delete")) {
                 numbers.removeAll(Arrays.asList(element));
             } else if (command.equals("Insert")) {
                 int index = Integer.parseInt(input.split("\\s+")[2]);
                 numbers.add(index, element);
             }
             input = scanner.nextLine();
         }
 
         printList(numbers);
     }
 
     private static void printList(List<Integer> numbers) {
         for (int number : numbers) {
             System.out.print(number + " ");
         }
     }
 }