Update APCalendar.java

src/main/java/APCalendar.java

@@ -13,7 +13,11 @@ private static boolean isLeapYear(int year)
   public static int numberOfLeapYears(int year1, int year2)
   { 
     /* to be implemented in part (a) */
-
+    int count = 0;
+    for(int i = year1; i <= year2;i++){
+      if(isLeapYear(i)) count++;
+    }
+    return count;
   }
 
   /** Returns the value representing the day of the week for the first day of year,
@@ -52,5 +56,6 @@ private static int dayOfYear(int month, int day, int year)
   public static int dayOfWeek(int month, int day, int year)
   {
     /* to be implemented in part (b) */
+    return firstDayofYear(year) + dayOfYear(month, day, year) % 7
   }
 }