import java.util.*;
public class SalesManager{
    public static void main(String[] args){
        List<Integer> week1 = new ArrayList<Integer>();
        List<Integer> week2 = new ArrayList<Integer>();
        int option;

            do {
                System.out.println("Please choose what you want to do by entering a number: \n");
                System.out.println("(1) Input last week's sales.");
                System.out.println("(2) Input this week's sales.");
                System.out.println("(3) Review weekly sales");
                System.out.println("(4) Remove last week's sales and replace with this week's sales.");
                System.out.println("(5) Exit.");

                Scanner input = new Scanner( System.in );
                option = input.nextInt();
              if(option == 1){
                     System.out.println("Please enter your sales for Monday:");
                     week1.add(input.nextInt());
                     System.out.println("Please enter your sales for Tuesday:");
                     week1.add(input.nextInt());
                     System.out.println("Please enter your sales for Wednesday:");
                     week1.add(input.nextInt());
                     System.out.println("Please enter your sales for Thursday:");
                     week1.add(input.nextInt());
                     System.out.println("Please enter your sales for Friday:");
                     week1.add(input.nextInt());}
              if(option == 2){
                     System.out.println("Please enter this week's sales");
                     System.out.println("Please enter your sales for Monday:");
                     week2.add(input.nextInt());
                     System.out.println("Please enter your sales for Tuesday:");
                     week2.add(input.nextInt());
                     System.out.println("Please enter your sales for Wednesday:");
                     week2.add(input.nextInt());
                     System.out.println("Please enter your sales for Thursday:");
                     week2.add(input.nextInt());
                     System.out.println("Please enter your sales for Friday:");
                     week2.add(input.nextInt());
                    }
                     if(option == 3){
                     System.out.println(week1);
                     System.out.println(week2);
                    }
                     if (option == 4){
                     week1.removeAll(week1);
                     week1.clear();
                     week1.addAll(week2);
                     week2.clear();
                     week2.addAll(week1);
                     week2.removeAll(week2);
                    }
                    if (option == 5) {
                        System.exit(0);
                    }
                } while (option!=0);
            }
        }