coffee

1.  import java.util.Arrays;
2.  import java.util.Collections;
3.  import java.util.List;
4.  import java.util.Scanner;
5.  import java.util.stream.Collectors;
6.
7.  public class CoffeeLover {
8.      public static void main(String[] args) {
9.          Scanner scan = new Scanner(System.in);
10.
11.         List<String> coffees = Arrays.stream(scan.nextLine().split("\\s+")).collect(Collectors.toList());
12.         int commandsCount = Integer.parseInt(scan.nextLine());
13.
14.         for (int i = 0; i < commandsCount; i++) {
15.             String[] command = scan.nextLine().split("\\s+");
16.
17.             switch (command[0]) {
18.                 case "Include":
19.                     coffees.add(command[1]);
20.                     break;
21.                 case "Remove":
22.                     int removedCoffeesCnt = Integer.parseInt(command[2]);
23.                     if (removedCoffeesCnt <= coffees.size()) {
24.                         if (command[1].equals("first")) {
25.                             for (int g = 0; g < removedCoffeesCnt; g++) {
26.                                 coffees.remove(0);
27.                             }
28.                         } else if (command[1].equals("last")) {
29.                             for (int g = 0; g < removedCoffeesCnt; g++) {
30.                                 coffees.remove(coffees.size() - 1);
31.                             }
32.                         }
33.                     }
34.                     break;
35.                 case "Prefer":
36.                     int firstIndex = Integer.parseInt(command[1]);
37.                     int secondIndex = Integer.parseInt(command[2]);
38.
39.                     try {
40.                         String firstCoffee = coffees.get(firstIndex);
41.                         coffees.set(firstIndex, coffees.get(secondIndex));
42.                         coffees.set(secondIndex, firstCoffee);
43.                     } catch (Exception e) {}
44.                     break;
45.                 case "Reverse":
46.                     Collections.reverse(coffees);
47.                     break;
48.             }
49.         }
50.         System.out.println("Coffees:");
51.         for (String coffee:coffees) {
52.             System.out.print(coffee + " ");
53.         }
54.     }
55. }