That would be really helpful if you help me integrate this code in my Paving service website.

My Java solution:

public static String dayOfProgrammer(int year) {
    StringBuffer buf = new StringBuffer();
    int day = 13;

    if (year == 1918) {
        day = 26;
    } else if (year < 1918) {
        if (isJulianLeapYear(year)) day-=1;
    } else if (year > 1918) {
        if (isGregorianLeapYear(year)) day-=1;
    }

    buf.append(day + ".09." + year);

    return buf.toString();
}

private static boolean isJulianLeapYear(int year) {
    if (year % 4 == 0) return true;
    return false;
}

private static boolean isGregorianLeapYear(int year) {
    if ((year % 400 == 0) || (year % 4 == 0 && year % 100 != 0)) return true;
    return false;
}

How come the answer for year = 1918 is 26.09.1918 ?

Most solutions seem to have hardcoded this value

For most years, the Day of the Programmer falls on 13.09.yyyy, but if it’s a leap year, it’s 12.09.yyyy. For the year 1918, due to the calendar change in Russia, the date is 26.09.1918. Cloud-Anbindung Azure

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