Условие
A year divisible by 4 is a leap year unless it is also divisible by 100. Years divisible by 400 are leap years despite that exception. Apply this arithmetic rule to every allowed input year.
Implement leap_year(year).
Input
year: The year to check.
Output
Return true for a leap year and false otherwise.
Ограничения
1 ≤ year ≤ 9999.
Примеры
Ввод:
year = 2024
Ожидаемый вывод:
expected = TrueВвод:
long long year = 2024;
Ожидаемый вывод:
bool expected = true;Ввод:
long year = 2024;
Ожидаемый вывод:
bool expected = true;Пояснение
2024 is divisible by 4 and not by 100.
Ввод:
year = 2100
Ожидаемый вывод:
expected = FalseВвод:
long long year = 2100;
Ожидаемый вывод:
bool expected = false;Ввод:
long year = 2100;
Ожидаемый вывод:
bool expected = false;Пояснение
2100 is divisible by 100 but not by 400, so the century exception applies.
Как подступиться
Сначала попробуйте сами, затем открывайте подсказки по одной.
Подсказка 1
Most years follow the divisible-by-4 rule, but centuries are exceptions.
Подсказка 2
A year divisible by 400 is still a leap year, even though it is also divisible by 100.
Подсказка 3
Check the exception before rejecting century years, or you may misclassify years like 2000.
Ожидаемая сложность
O(1) time, O(1) extra space
Ссылки
Это задание адаптировано для CodeUtility. Следуйте условию и ограничениям выше.