Analyzer.java

import java.util.*;

public class Analyzer {
	

	/**
	 * This method calculates the weighted average for each word in all the Sentences.
	 * This method is case-insensitive and all words should be stored in the Map using
	 * only lowercase letters.
	 * 
	 * @param sentences Set containing Sentence objects with words to score
	 * @return Map of each word to its weighted average; or an empty Map if the Set of
	 * Sentences is empty or null.
	 */
	public static Map<String, Double> calculateWordScores(Set<Sentence> sentences) {
		/*
		 * Implement this method in Part 2
		 */
		return null;
	}
	
	/**
	 * This method determines the sentiment of the input sentence using the average of the
	 * scores of the individual words, as stored in the Map.
	 * This method is case-insensitive and all words in the input sentence should be
	 * converted to lowercase before searching for them in the Map.
	 * 
	 * @param wordScores Map of words to their weighted averages
	 * @param sentence Text for which the method calculates the sentiment
	 * @return Weighted average scores of all words in input sentence; or 0 if any error occurs
	 */
	public static double calculateSentenceScore(Map<String, Double> wordScores, String sentence) {
		/*
		 * Implement this method in Part 3
		 */
		return 0;
	}


}