Question

I need to write a function
night_hours(start_time, end_time, night_start, night_end)
that calculates how many hours between start_time and end_time are within the range of night_start to night_end, or calculate how many night hours there are between start_time and end_time.
I will appreciate any help. Thanks :)

Answer 1

In general terms ( because I don't know what language, what modules can be used or the data type of the return value): start_time -> end_time would be the difference (difference suggests subtraction) of the two. Same thing with the night_*. Then make sure that the night_* is larger than the *_time differnce.

What gets fun is night suggests that one or both of the night_* values could go past midnight and need some adjusting. And any of the minutes could need to borrow an hour, but the helper function find_difference( begin, end ) could/should handle that.

If you can use a module/library that will convert the times to numbers, it would be even simpler, but the past midnight problem remains.

Answer 2

There is not enough information to answer this well, please provide a language, thank you.