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import java.util.Scanner;

// The class to test the Cat and Customer classes
public class Elimination {
  // The main method
  public static void main(String[] Args) {
     // The scanner for standard input
     Scanner sc = new Scanner(System.in);

     // Read in the contents from the first line
     // * Number of commands
     // * Maximum number of patrons
     // * Maximum number of cats
     int numCommands = sc.nextInt();
     int maxPatrons = sc.nextInt();
     int maxCats = sc.nextInt();
     
     // Store the current number of cats and patrons
     int curPatrons = 0;
     int curCats = 0;

     // Track all the cats and patrons in their own arrays
     Cat[] allCats = new Cat[maxCats];
     Customer[] allPatrons = new Customer[maxPatrons];

     // Loop through all the commands
     for (int command = 0; command < numCommands; command++) {
        // Read in the type of command
        String typeString = sc.next();

        // Handle the command based on the type
        switch (typeString) {
           case "Progress":
              progress(allCats, allPatrons);
              break;
           case "Cat":
              addCat(curCats, allCats, sc);
              curCats++;
              break;
           case "Patron":
              addPatron(curPatrons, allPatrons, sc);
              curPatrons++;
              break;
           default:
              System.err.println("Unrecognized command");
        }
     }

     // Print all the remaining cats
     for (Cat curCat : allCats) {
        if (!curCat.isRemoved()) {
           System.out.println("Cat " + curCat + " was not chosen");
        }
     }

     // Print all remaining customers
     for (Customer curPatron : allPatrons) {
        if (!curPatron.isRemoved()) {
           System.out.println("Customer " + curPatron +
                 " did not find a cat");
        }
     }
  }
 
  // Method to add a patron.
  public static void addPatron(int curPatrons, Customer[] allPatrons,
                               Scanner sc) {
        // Read in the cat's information
        String name = sc.next();
        int x = sc.nextInt();
        int y = sc.nextInt();

        // Create and initialize the cat
        allPatrons[curPatrons] = new Customer(name, x, y);
  }

  // Method to add a cat to the array of cats.
  public static void addCat(int curCats, Cat[] allCats, Scanner sc) {
        // Read in the cat's information
        String name = sc.next();
        int x = sc.nextInt();
        int y = sc.nextInt();

        // Create and initialize the cat
        allCats[curCats] = new Cat(name);
        allCats[curCats].setX(x);
        allCats[curCats].setY(y);
  }

  // Method to progress time by one unit
  public static void progress(Cat[] allCats, Customer[] allPatrons) {
     // Loop through all the customers
     for (Customer curPatron : allPatrons) {
        // Check that we have a Customer
        if (curPatron != null && !curPatron.isRemoved()) {
           // Get the Customer to find the cat they want
           curPatron.findFocus(allCats);
           
           // Try to move a Customer
           curPatron.move(allPatrons);

           // Check if we have obtained cat
           for (Cat curCat : allCats) {
              if (curPatron.overlaps(curCat)) {
                 System.out.println(curPatron + " plays with " + curCat);
                 
                 // The customer leaves
                 curPatron.remove();

                 // The employee is done for the day
                 curCat.remove();
              }
           }
        }
     }
  }
}

// The Cat class
class Cat {
  // A variable storing the name of the Cat.
  final String name;

  // Variables storing the location of the Cat.
  private int x, y;

  // A variable storing whether the Cat has been removed or not.
  private boolean removed;
 
  // Constructor method that takes in the name of the Cat.
  // The Cat's location should be set to the origin.
  // The Cat should not start removed.
  Cat(String name) { /* TODO */ }
 
  // Method to retrieve the x-coordinate of a Cat's position.
  // Returns the x-coordinate of the Cat.
  int getX() { /* TODO */ }
 
  // Method to retrieve the y-coordinate of a Cat's position.
  // Returns the y-coordinate of the Cat.
  int getY() { /* TODO */ }
 
  // Method to set the x-coordinate of a Cat's position.
  // Sets the x-coordinate of a Cat's position to the given value.
  void setX(int x) { /* TODO */ }

  // Method to set the y-coordinate of a Cat's position.
  // Sets the y-coordinate of a Cat's position to the given value.
  void setY(int y) { /* TODO */ }

  // Method to check if a Cat is removed.
  // Returns the removed boolean of the Cat.
  boolean isRemoved() { /* TODO */ }

  // Method to remove a Cat.
  // Sets the remove boolean of the Cat to true.
  void remove() { /* TODO */ }

  // The toString method of the Cat class.
  // Returns the name of the Cat.
  public String toString() { /* TODO */ }
}

// The enum to store the direction
enum Direction {
  NONE,
  UP,   // y increases
  DOWN, // y decrease
  LEFT, // x decrease
  RIGHT // x increase
}

// The Customer class
class Customer {
  // A final instance variable storing the name of the Customer.
  final String name;

  // Variables storing the location of the Customer.
  private int x, y;

  // A variable storing whether the Cat has been removed or not.
  private boolean removed;

  // A variable storing the direction of the Customer.
  private Direction curDirection;

  // Constructor that takes in the name, and the location (in terms of x
  // and y) of the Customer.
  Customer(String name, int x, int y) { /* TODO */ }

  // Method that handles customers determining direction.
  // The Customer will focus on a Cat from the array of Cats parameter
  // that is one of the four cardinal directions (Up, Down, Left, Right)
  // from the Customer.
  // The Cat the Customer focuses on should be the closest unremoved Cat.
  // If the Cat is in the Customer's location, then the customer will
  // have no direction.
  // Otherwise, the current direction of the Customer should be set to
  // the direction the Cat of the customers focus is in.
  void findFocus(Cat[] Cats) { /* TODO */ }

  // Method that handles Customer movement.
  // If the Customer has no direction of their destination contains
  // another unremoved Customer, then the Customer will not move.
  // If the customer has a direction and the destination conatains no
  // unremoved customers, the Customers will move in their given
  // direction.
  // Regardless of outcome the current Customer will have no resulting
  // direction after "movement".
  void move(Customer[] patrons) { /* TODO */ }

  // Method to check if a Customer could move into another patron.
  // Returns true if some unremoved Customer is at the destination
  // location.
  // Returns false otherwise.
  boolean collides(Customer[] patrons) { /* TODO */ }

  // Method to check if the Customer shares a space with a Cat.
  // Returns true if the Cat is not null, not removed, and has the same
  // xy-position as the current customer.
  // Returns false otherwise.
  boolean overlaps(Cat employee) { /* TODO */ }
 
  // Method to retrieve the x-coordinate of a Customer's position.
  // Returns the x-coordinate of the Customer.
  public int getX() { /* TODO */ }

  // Method to retrieve the y-coordinate of a Customer's position.
  // Returns the y-coordinate of the Customer.
  public int getY() { /* TODO */ }

  // Method to check if a Customer is removed.
  // Returns the removed boolean of the Customer.
  boolean isRemoved() { /* TODO */ }

  // Method to remove a Customer.
  // Sets the removed boolean of the class to true.
  public void remove() { /* TODO */ }

  // The toString method of the Customer class.
  // Returns the name of the Customer.
  public String toString() { /* TODO */ }
}

Transcribed Image Text:

Employee Elimination Filename: Elimination.java Objective Give additional practice with loops input in Java Give additional practice with conditions input in Java Give practice with methods in Java Give practice with custom classes in Java USE THE TEMPLATE Story Your business is doing well, but you think it could be doing better. At first it appeared that your customers were aimlessly walking around your place of business. Upon further inspection you noticed that the customers walked towards the nearest employee (cat) the customer saw. When a cat and a customer occupied the same location, the customer began playing with the cat or giving it back scratches. The customer would leave happy that they were able to play with a cat, they would not play with any other cats. The cat being played with would have completed their job for the day and leave. The main problem is that customers do not look around the room, they only look in the 4 cardinal directions (North, South, East, and West). If the customer does not see a cat, then they just stand there awkwardly waiting for a cat to appear. The cats never moved, because they were taking a catnap. Additionally, some parts of your restaurant were packed with customers, which caused problems since customers could see a cat, but could not walk into a spot that already contained another customer. You have decided to model the behavior of cats and customers using a program so that you could run multiple scenarios to help better determine employee positioning for later days. Luckily, you have obtained some template code that one of your programming cats has developed to start you off. Problem Finish the classes of a program that simulates the customer and cat interaction. Input Input will begin with 3 numbers representing the number of commands for the simulation, N, (1 N 1,000), the maximum number of customers in the simulation, P (1 s P s 1,000), and the maximum number of cats for the simulation, E (1 s E s 1,000). Employee Elimination Filename: Elimination.java Objective Give additional practice with loops input in Java Give additional practice with conditions input in Java Give practice with methods in Java Give practice with custom classes in Java USE THE TEMPLATE Story Your business is doing well, but you think it could be doing better. At first it appeared that your customers were aimlessly walking around your place of business. Upon further inspection you noticed that the customers walked towards the nearest employee (cat) the customer saw. When a cat and a customer occupied the same location, the customer began playing with the cat or giving it back scratches. The customer would leave happy that they were able to play with a cat, they would not play with any other cats. The cat being played with would have completed their job for the day and leave. The main problem is that customers do not look around the room, they only look in the 4 cardinal directions (North, South, East, and West). If the customer does not see a cat, then they just stand there awkwardly waiting for a cat to appear. The cats never moved, because they were taking a catnap. Additionally, some parts of your restaurant were packed with customers, which caused problems since customers could see a cat, but could not walk into a spot that already contained another customer. You have decided to model the behavior of cats and customers using a program so that you could run multiple scenarios to help better determine employee positioning for later days. Luckily, you have obtained some template code that one of your programming cats has developed to start you off. Problem Finish the classes of a program that simulates the customer and cat interaction. Input Input will begin with 3 numbers representing the number of commands for the simulation, N, (1 N 1,000), the maximum number of customers in the simulation, P (1 s P s 1,000), and the maximum number of cats for the simulation, E (1 s E s 1,000).

Answer rating: 100% (QA)

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