Update APCalendar.java

src/main/java/APCalendar.java

@@ -13,7 +13,12 @@ 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 +57,9 @@ 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) */
+ int pooD = firstDayOfYear(year);
+ int pooN = dayOfYear(month, day, year);
+ int result = (pooD + pooN - 1)%7;
+ return result;
  }
 }