clean up number utilities

NumberUtilities.java

- 
+
 
 
 public class NumberUtilities {
-    
-    public static String getRange(int start) {
+
+    public static String getRange(int stop) {
         return null;
     }
-    
+
     public static String getRange(int start, int stop) {
         return null;
     }
     public static String getRange(int start, int stop, int step) {
         return null;
     }
-    
+
     public static String getEvenNumbers(int start, int stop) {
         return null;
     }