Week2. a new class MovieRunnerAverage

Author: SkyrocketStan

Week1/src/FirstRatings.java

@@ -24,6 +24,16 @@ public ArrayList<Rater> getRaterArrayList() {
   }
 
   private ArrayList<Movie> movieArrayList;
+
+  /**
+   * This method returns number of unique Raters
+   *
+   * @return int number of unique raters
+   */
+  public int getRatersNumber() {
+    return ratersWithIds.size();
+  }
+
   private ArrayList<Rater> raterArrayList;
 
   private HashMap<String, HashSet<String>> directorsAndItsMovies;

Week2/src/MovieRunnerAverage.java

@@ -0,0 +1,11 @@
+public class MovieRunnerAverage {
+
+  public MovieRunnerAverage() {}
+
+  public void printAverageRatings() {
+    SecondRatings secondRatings = new SecondRatings("ratedmovies_short.csv", "ratings_short.csv");
+    System.out.printf(
+        "Total number of movies %d, total number of raters %d",
+        secondRatings.getMovieSize(), secondRatings.getRaterSize());
+  }
+}

Week2/src/SecondRatings.java

@@ -10,6 +10,7 @@
 public class SecondRatings {
   private final ArrayList<Movie> myMovies;
   private final ArrayList<Rater> myRaters;
+  private final FirstRatings firstRatings;
 
   public SecondRatings() {
     // default constructor
@@ -20,7 +21,7 @@ public SecondRatings() {
   // loadRaters methods in FirstRatings to read in all the movie and ratings data and store them
   // in the two private ArrayList variables of the SecondRatings class, myMovies and myRaters.
   public SecondRatings(String moviesFileName, String ratingsFileName) {
-    FirstRatings firstRatings = new FirstRatings(moviesFileName, ratingsFileName);
+    firstRatings = new FirstRatings(moviesFileName, ratingsFileName);
     myMovies = firstRatings.getMovieArrayList();
     myRaters = firstRatings.getRaterArrayList();
   }
@@ -42,6 +43,6 @@ public int getMovieSize() {
    * @return int number of movies
    */
   public int getRaterSize() {
-    return this.myRaters.size();
+    return this.firstRatings.getRatersNumber();
   }
 }

Week2/src/Week2.java

@@ -0,0 +1,6 @@
+public class Week2 {
+  public static void main(String[] args) {
+    MovieRunnerAverage average = new MovieRunnerAverage();
+    average.printAverageRatings();
+  }
+}