Problem
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.
Constraints
0 ≤ seconds ≤ 1,000,000,000. Hours may exceed 23; this is a duration, not a time of day.
Examples
Example 1
Input:
seconds = 7325
Expected output:
expected = "2h 2m 5s"Input:
long long seconds = 7325;
Expected output:
std::string expected = "2h 2m 5s";Input:
long seconds = 7325;
Expected output:
string expected = "2h 2m 5s";Explanation
7325 = 2 × 3600 + 2 × 60 + 5.
Example 2
Input:
seconds = 120
Expected output:
expected = "2m"Input:
long long seconds = 120;
Expected output:
std::string expected = "2m";Input:
long seconds = 120;
Expected output:
string expected = "2m";Explanation
120 seconds is exactly 2 minutes. Omit the zero hours and seconds.
References
This challenge is adapted for CodeUtility. Follow the statement and constraints above.