Условие
Split a duration into hours, minutes, and seconds. Write units as h, m, and s, in that order, with one space between units. Omit any zero-valued unit, except that zero seconds is written as 0s.
Implement format_duration(seconds).
Input
seconds: The total duration in seconds.
Output
Return the formatted duration, for example 2h 2m 5s.
Ограничения
0 ≤ seconds ≤ 1,000,000,000. Hours may exceed 23; this is a duration, not a time of day.
Примеры
Ввод:
seconds = 7325
Ожидаемый вывод:
expected = "2h 2m 5s"Ввод:
long long seconds = 7325;
Ожидаемый вывод:
std::string expected = "2h 2m 5s";Ввод:
long seconds = 7325;
Ожидаемый вывод:
string expected = "2h 2m 5s";Пояснение
7325 = 2 × 3600 + 2 × 60 + 5.
Ввод:
seconds = 120
Ожидаемый вывод:
expected = "2m"Ввод:
long long seconds = 120;
Ожидаемый вывод:
std::string expected = "2m";Ввод:
long seconds = 120;
Ожидаемый вывод:
string expected = "2m";Пояснение
120 seconds is exactly 2 minutes. Omit the zero hours and seconds.
Как подступиться
Сначала попробуйте сами, затем открывайте подсказки по одной.
Подсказка 1
Break the total seconds into larger units first, then format only the nonzero parts.
Подсказка 2
Keep hours, minutes, and seconds in that order, with spaces between included units.
Подсказка 3
If every larger unit is zero, still make sure the output is exactly 0s when the duration is zero.
Ожидаемая сложность
O(1) time, O(1) extra space
Ссылки
Это задание адаптировано для CodeUtility. Следуйте условию и ограничениям выше.