Write a function, which takes a non-negative integer (seconds) as input and returns the time in a
human-readable format (HH:MM:SS
)
HH
= hours, padded to 2 digits, range: 00 - 99MM
= minutes, padded to 2 digits, range: 00 - 59SS
= seconds, padded to 2 digits, range: 00 - 59
The maximum time never exceeds 359999 (99:59:59
)
You can find some examples in the test fixtures.