代写Practice Lab: Movie Tracker代写C/C++编程

Practice Lab: Movie Tracker

Task 1: The MovieRecord Class

Create a class MovieRecord to store movie data:

    ● Fields: String title, String genre, int rating (1-10 scale).

    ● Methods:

        ○ Constructor to initialize all fields.

        ○ Getters and setters.

        ○ toCSV(): returns a CSV string (title,genre,rating).

Task 2: Summing Ratings

Write a static method sumRatings that:

    ● Accepts an ArrayList<MovieRecord> and a genre.

    ● Returns the sum of ratings for movies in the given genre.

Task 3: Client-Server Communication

1. Client: Write a static method sendMoviesToServer:

        ○ Connects to a server on localhost port 9000.

        ○ Sends toCSV strings of movies from an ArrayList<MovieRecord> to the server.

        ○ Ends with "Done" and receives the count of movies sent as a string.

2. Server: Write a static method receiveMoviesFromClient:

        ○ Listens on port 9000.

        ○ Accepts connections and reads CSV movie data until "Done".

        ○ Returns an ArrayList<MovieRecord> and sends back the number of movies received.

Task 4: Mapping and Prioritizing Movies

1. Write a method genreMap:

        ○ Takes an ArrayList<MovieRecord> and returns a Map<String, Integer> where:

            ■ Key = genre.

            ■ Value = total ratings of all movies in that genre.

2. Create a PriorityQueue<MovieRecord>:

        ○ Prioritize movies by rating (higher ratings first).

        ○ Populate the queue with movies from an ArrayList<MovieRecord>.

Task 5: Multi-Threaded Movie Rating Aggregation

1. Create a class GenreRatingAggregator:

        ○ Fields: ArrayList<MovieRecord> movieList, String genre, int totalRating.

        ○ Implements Runnable and calculates the sum of ratings for its genre in run().

        ○ Provides a getter for totalRating.

2. In main:

        ○ Create two GenreRatingAggregator objects for two genres.

        ○ Use threads to execute them concurrently.

        ○ Wait for threads to finish and print the ratings for both genres.