Treasure Hunt

package _03Arrays_Exercise;

import java.util.Scanner;

public class _10TreasureHunt {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        String input = scanner.nextLine();
        String[] treasures = input.split("\\|");
        String stolenTreasures = "";

        String command = scanner.nextLine();
        while(!command.equals("Yohoho!")) {
            String[] treasureInput = command.split(" ");
            String treasureCmd = treasureInput[0];

            if(treasures.length >= 2 && treasures.length <= 100) {
                if (treasureCmd.equals("Loot")) {
                    for (int i = 1; i < treasureInput.length; i++) {
                        boolean isEqual = false;

                        for (String treasure : treasures) {
                            if (treasureInput[i].equals(treasure)) {
                                isEqual = true;
                                break;
                            }
                        }

                        if (!isEqual) {
                            String[] treasuresNew = new String[treasures.length + 1];
                            for (int j = 0; j < treasures.length; j++) {
                                treasuresNew[j] = treasures[j];
                            }
                            treasures = treasuresNew;
//                      System.arraycopy(treasures, 0, treasuresNew, 0, treasures.length);

                            for (int j = 0; j < treasures.length; j++) {
                                if (j != treasures.length - 1) {
                                    treasures[treasures.length - 1 - j] = treasures[treasures.length - 2 - j];
                                }
                            }

                            treasures[0] = treasureInput[i];
                        }
                    }
                } else if (treasureCmd.equals("Drop")) {
                    int index = Integer.parseInt(treasureInput[1]);

                    if (index >= 0 && index <= treasures.length - 1) {
                        String droppedLoot = treasures[index];

                        for (int i = index; i < treasures.length - 1; i++) {
                            treasures[i] = treasures[i + 1];
                        }

                        treasures[treasures.length - 1] = droppedLoot;
                    }
                } else if (treasureCmd.equals("Steal")) {
                    int items = Integer.parseInt(treasureInput[1]);
                    if (items >= 0 && items < treasures.length) {

                        for (int i = treasures.length - items; i < treasures.length; i++) {
                            stolenTreasures += treasures[i];

                            if(i != treasures.length - 1) {
                                stolenTreasures += ", ";
                            }
                        }

                        String[] treasuresNew = new String[treasures.length - items];
                        System.arraycopy(treasures, 0, treasuresNew, 0, treasuresNew.length);
                        treasures = treasuresNew;
                    } else {
                        for (int i = 0; i < treasures.length; i++) {
                            stolenTreasures += treasures[i];

                            if(i != treasures.length - 1) {
                                stolenTreasures += ", ";
                            }
                        }
                        treasures = new String[0];
                    }
                }
            }
            command = scanner.nextLine();
        }


        System.out.println(stolenTreasures);

        if(treasures.length > 0) {
            int sumItems = 0;
            for (String treasure : treasures) {
                sumItems += treasure.length();
            }
            double avgTreasureGain = sumItems * 1.0 / treasures.length;

            System.out.printf("Average treasure gain: %.2f pirate credits.", avgTreasureGain);
        } else {
            System.out.println("Failed treasure hunt.");
        }
    }
}