2019 FRQ

public static int numberOfLeapYears(int year1, int year2) {
	int count = 0;
	
	for (int year = year1; year <= year2; year++) {
		if (isLeapYear(year)) {
			count++;
		}
	}
	
	return count;
}

public static int dayOfWeek(int month, int day, int year) {
	return (firstDayOfYear(year) + dayOfYear(month, day, year) - 1) % 7;
}