similarity distance

src/com/trinity/stooges/KNN.java

@@ -7,20 +7,21 @@
 class KNN {
 
 	public ArrayList<String> closestNeighbour(SongEntity seed_song, SongEntity[] songs, int number) {
-	    HashMap<String,Double> map = new HashMap<String,Double>();
+	    HashMap<String,Float> map = new HashMap<String,Float>();
 	    ValueComparator bvc =  new ValueComparator(map);
-	    TreeMap<String,Double> sorted_map = new TreeMap<String, Double>(bvc);
+	    TreeMap<String,Float> sorted_map = new TreeMap<String, Float>(bvc);
 		ArrayList<String> distances = new ArrayList<String>();
 		for (int i = 0; i < songs.length; i++) {
-			 map.put(songs[i].get_id(), (double) computeDistance(seed_song, songs[i]));
+			 map.put(songs[i].get_id(), (float) computeDistance(seed_song, songs[i]));
 		}
 		sorted_map.putAll(map);
-		sorted_map.descendingMap();
+//		sorted_map.descendingMap();
 		int count = 0;
 		for (String key :sorted_map.keySet()) {
-			if(count != number) {
+			if(count >= (songs.length - number)) {
 				distances.add(key);
 			}
+			count++;
 		}
 		return distances;
 	}

src/com/trinity/stooges/ValueComparator.java

@@ -5,16 +5,16 @@
 
 public class ValueComparator implements Comparator<Object> {
 
-	  Map<String, Double> base;
-	  public ValueComparator(Map<String, Double> base) {
+	  Map<String, Float> base;
+	  public ValueComparator(Map<String, Float> base) {
 	      this.base = base;
 	  }
 
 	  public int compare(Object a, Object b) {
-		  if((Double)base.get(a) < (Double)base.get(b)) {
+		  if((Float)base.get(a) < (Float)base.get(b)) {
 			  return 1;
 		  } 
-		  else if((Double)base.get(a) == (Double)base.get(b)) {
+		  else if((Float)base.get(a) == (Float)base.get(b)) {
 			  return 0;
 		  } 
 		  else {