public class Device {

	public static final int ORIGINYEAR = 1980;

	public static void main(String args[]) {
		int days;
		int bad_year;
		int good_year;

		Scanner keyboard = new Scanner(System.in);
		System.out.print("Enter days: ");
		days = keyboard.nextInt();

		bad_year = badCode(days);
		good_year = goodCode(days);

		System.out.println("badCode - Days: " + days + " = Year: " + bad_year);
		System.out.println("goodCode - Days: " + days + " = Year: " + good_year);

		keyboard.close();
	}

	/**
	 * Supposedly calculates the year given days since ORIGINYEAR. Fails on a leap
	 * year.
	 *
	 * @param days
	 *            number of days since January 1, 1980 (int >= 0)
	 * @return the year given days
	 */
	public static int badCode(int days) {
		int year = ORIGINYEAR; /* = 1980 */

		while (days > 365) {
			if (LeapYear.leapYear(year)) {
				if (days > 366) {
					days -= 366;
					year += 1;
				}
			} else {
				days -= 365;
				year += 1;
			}
		}
		return year;
	}

	/**
	 * Correctly calculates the year given days since ORIGINYEAR.
	 *
	 * @param days
	 *            number of days since January 1, 1980 (int >= 0)
	 * @return the year
	 */
	public static int goodCode(int days) {
		// method code here
		int year = ORIGINYEAR;
		int leap_check = 1;// so there is not an infinite loop
		while (days > 365 && leap_check == 1) {
			if (LeapYear.leapYear(year)) {
				if (days > 366) {
					days -= 366;
					year += 1;
				} else {// if year still contains 366 days, do not increment the year
					leap_check = 3;
				}

			} else {
				days -= 365;
				year += 1;
			}

		}
		return year;
	}
}