Technology Fundamentals Mid Exam - 10 March 2019 Group 2 - 3

package com.company;

import java.util.*;
import java.util.stream.Collectors;

public class Main {

    public static void main(String[] args) {

        Scanner scanner = new Scanner(System.in);

        List<String> words = Arrays.stream(scanner.nextLine().split(" "))
                .collect(Collectors.toList());

        String inputCommand = scanner.nextLine();

        String second = "";
        String first = "";
        System.out.println();

        while (!inputCommand.equals("Stop")) {

            List<String> commands = Arrays.stream(inputCommand.split("\\s+"))
                    .collect(Collectors.toList());


            if (commands.size() == 2){
                first = commands.get(1);
            }
            if (commands.size() == 3){
                first = commands.get(1);
                second = commands.get(2);

            }

            if (commands.contains("Delete")) {
                int indexDelete = Integer.parseInt(first);
                if ((words.size() > indexDelete + 1) && (indexDelete + 1 >= 0)){
                    words.remove((Integer.parseInt(first) + 1));
                }
            }

            if (commands.contains("Replace")) {
                if (words.contains(second)) {
                    words.set(words.indexOf(second), first);

                }
            }

            if (commands.contains("Swap")) {
                if (words.contains(first) && words.contains(second)) {
                    Collections.swap(words,words.indexOf(first),words.indexOf(second));

                }
            }

            if (commands.contains("Put")) {
                int firstInt = Integer.parseInt(second);
                if (((firstInt - 1) >= 0) && ((firstInt - 1) <= words.size())){
                    words.add(firstInt-1,first);
                }

            }

            if (commands.contains("Sort")) {
                Collections.sort(words);
                Collections.reverse(words);

            }
            inputCommand = scanner.nextLine();
        }

        System.out.println(words.toString().replaceAll("[\\[\\],]", ""));

    }
}