Write a function that returns true or false depending on whether its input integer is a leap year or not.

A leap year is defined as one that is divisible by 4, but is not otherwise divisible by 100 unless it is also divisible by 400.

For example, 2001 is a typical common year and 1996 is a typical leap year, whereas 1900 is an atypical common year and 2000 is an atypical leap year.

Solution

public class LeapYearCalculator {


    public static boolean isLeapYear(int year) {

        if (year % 400 == 0) {
            return true;
        }
        if (year % 100 == 0) {
            return false;
        }
        return year % 4 == 0;
    }
}

See also Emily Bache’s Leap Year Examples Github repository.

Learning Hours