movie code

import java.util.*;

class MovieSystem {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);

    // Input number of movies
    int n = sc.nextInt();
    sc.nextLine(); // Consume the remaining newline
    
    List<Movie> movies = new ArrayList<>();
    
    // Input movie details
    for (int i = 0; i < n; i++) {
        int movieID = sc.nextInt();
        sc.nextLine();
        String movieName = sc.nextLine();
        double rating = sc.nextDouble();
        int actorCount = sc.nextInt();
        sc.nextLine(); // Consume the remaining newline
        
        Set<String> actors = new HashSet<>();
        for (int j = 0; j < actorCount; j++) {
            String actor = sc.nextLine();
            actors.add(actor);
        }
        movies.add(new Movie(movieID, movieName, rating, actors));
    }

    // Input set of actors
    int actorSetSize = sc.nextInt();
    sc.nextLine();
    Set<String> actorSet = new HashSet<>();
    for (int i = 0; i < actorSetSize; i++) {
        String actor = sc.nextLine();
        actorSet.add(actor);
    }

    // Compute and print average rating
    double avgRating = calculateAverageRating(movies, actorSet);
    if (avgRating > 0) {
        System.out.printf("Average Rating: %.2f\n", avgRating);
    } else {
        System.out.println("No movies found for the given actors.");
    }

    // Print movies involving the actors
    Set<String> involvedMovies = getMoviesByActors(movies, actorSet);
    if (!involvedMovies.isEmpty()) {
        System.out.println("Movies:");
        for (String movie : involvedMovies) {
            System.out.println(movie);
        }
    } else {
        System.out.println("No movies found for the given actors.");
    }

    sc.close();
}

// Method to calculate average rating of movies involving the given actors
public static double calculateAverageRating(List<Movie> movies, Set<String> actorSet) {
    double totalRating = 0;
    int count = 0;

    for (Movie movie : movies) {
        if (!Collections.disjoint(movie.getActors(), actorSet)) {
            totalRating += movie.getRating();
            count++;
        }
    }
    return count > 0 ? totalRating / count : 0;
}

// Method to retrieve movies involving the given actors
public static Set<String> getMoviesByActors(List<Movie> movies, Set<String> actorSet) {
    Set<String> result = new TreeSet<>();
    for (Movie movie : movies) {
        if (!Collections.disjoint(movie.getActors(), actorSet)) {
            result.add(movie.getMovieName());
        }
    }
    return result;
}

}

// Movie Class with Getters and Setters
class Movie {
private int movieID;
private String movieName;
private double rating;
private Set<String> actors;

public Movie(int movieID, String movieName, double rating, Set<String> actors) {
    this.movieID = movieID;
    this.movieName = movieName;
    this.rating = rating;
    this.actors = actors;
}

// Getters
public int getMovieID() {
    return movieID;
}

public String getMovieName() {
    return movieName;
}

public double getRating() {
    return rating;
}

public Set<String> getActors() {
    return actors;
}

// Setters
public void setMovieID(int movieID) {
    this.movieID = movieID;
}

public void setMovieName(String movieName) {
    this.movieName = movieName;
}

public void setRating(double rating) {
    this.rating = rating;
}

public void setActors(Set<String> actors) {
    this.actors = actors;
}

}