Course Planning

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Scanner;

public class softUniCoursePlanning {
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner sc = new Scanner (System.in);

		String[] courses = sc.nextLine().split(", ");
		List<String> schedule = new ArrayList<>();
		for (String string : courses) {
			schedule.add(string);
		}
		String exercise = "";
		String command = sc.nextLine();

		while (!command.equals("course start")) {
			String[] tokens = command.split(":");
			switch (tokens[0]) {
			case "Add" : if (!schedule.contains(tokens[1])) {
				schedule.add(tokens[1]);
			} break;
			case "Insert" : if (!schedule.contains(tokens[1])) {
				int index = Integer.parseInt(tokens[2]);
				schedule.add(index , tokens[1]);
			} break;
			case "Remove" : if (schedule.contains(tokens[1])) {
				schedule.remove(tokens[1]);
			}
			String ex = tokens[1] + "-Exercise";
			 if (schedule.contains(ex)) {
				schedule.remove(ex);
			}

			break;
			case "Swap" : String exOne = tokens[1]+ "-Exercise";
						  String exTwo = tokens[2]+ "-Exercise";

						  if (schedule.contains(tokens[1]) && schedule.contains(tokens[2])) {
								String firstElement = tokens[1];
								int firstIndex = schedule.indexOf(tokens[1]);
								String secondElement = tokens[2];
								int secondIndex = schedule.indexOf(tokens[2]);
								schedule.remove(tokens[1]);
								schedule.remove(tokens[2]);
								schedule.add(firstIndex, secondElement);
								schedule.add(secondIndex, firstElement);
								}
					if (schedule.contains(exOne) && schedule.contains(exTwo)) {
					//Collections.swap(schedule, schedule.indexOf(exOne), schedule.indexOf(exTwo));
					String firstElement = exOne;
					int firstIndex = schedule.indexOf(exOne);
					String secondElement = exTwo;
					int secondIndex = schedule.indexOf(exTwo);
					schedule.remove(exOne);
					schedule.remove(exTwo);
					schedule.add(firstIndex, secondElement);
					schedule.add(secondIndex, firstElement);
				} else if (schedule.contains(exOne) && !schedule.contains(exTwo)) {
					schedule.remove(exOne);
					String firstElement = tokens[1];
					schedule.add(schedule.indexOf(firstElement)+1, exOne);
				} else if (schedule.contains(exTwo) && !schedule.contains(exOne)) {
					schedule.remove(exTwo) ;
					String secondElement = tokens[2];
					schedule.add(schedule.indexOf(secondElement)+1, exTwo);
				} break;
			case "Exercise" : String ex1 = tokens[1] + "-Exercise";
				if (!schedule.contains(tokens[1])) {
			schedule.add(tokens[1]);

	     	schedule.add(ex1); break;
	     	}  else if (schedule.contains(tokens[1]) && !schedule.contains(ex1)) {
	     	int index = schedule.indexOf(tokens[1]);
	     	schedule.add(index+1,ex1);
		    } break;
			}
			command = sc.nextLine();
		}
		for (int i = 0; i < schedule.size(); i++) {
		System.out.println((i+1)+"."+schedule.get(i));
		}
	}
}