Lightbulb More
The complication in the 6th mission of the series is that now there might be needed more than one light bulb to illuminate a room. And this is the 5th argument of the function - how many light bulbs are needed to illuminate the room.
For example, if you need 3 bulbs to illuminate a room, then we don’t count the time when there were only 2 bulbs or only one. If the last argument of the function is not passed, then one light bulb is enough to illuminate the room.
The task is still the same - to find out how long the room was lit (in this task, we can say - sufficiently lit).
Input: Five arguments and only the first one is required. The first one (els) is a list of datetime objects (instead of datetime object there can be a tuple of two datetime and int), the second (start_watching) and the third ones (end_watching) are the datetime objects. The forth argument (operating) - timedelta object - how long the lamp can work. The 5th argument is a positive non-zero int.
Output: A number of seconds as an integer.
Example:
sum_light([
(datetime(2015, 1, 12, 10, 0, 10), 3),
datetime(2015, 1, 12, 10, 0, 20),
(datetime(2015, 1, 12, 10, 0, 30), 3),
(datetime(2015, 1, 12, 10, 0, 30), 2),
datetime(2015, 1, 12, 10, 0, 40),
(datetime(2015, 1, 12, 10, 0, 50), 2),
], req=2) == 20
sum_light([
(datetime(2015, 1, 12, 10, 0, 10), 3),
datetime(2015, 1, 12, 10, 0, 20),
(datetime(2015, 1, 12, 10, 0, 30), 3),
(datetime(2015, 1, 12, 10, 0, 30), 2),
datetime(2015, 1, 12, 10, 0, 40),
(datetime(2015, 1, 12, 10, 0, 50), 2),
], req=3) == 0
sum_light([
(datetime(2015, 1, 12, 10, 0, 10), 3),
datetime(2015, 1, 12, 10, 0, 20),
(datetime(2015, 1, 12, 10, 0, 30), 2),
(datetime(2015, 1, 12, 10, 0, 50), 3),
datetime(2015, 1, 12, 10, 0, 40),
(datetime(2015, 1, 12, 10, 0, 50), 2),
], req=3) == 10
Precondition:
- The array of pressing the button is always sorted in ascending order.
- The array of pressing the button has no repeated elements.
- The minimum possible date is 1970-01-01
- The maximum possible date is 9999-12-31
- req arguments is positive and non-zero
CheckiO Extensions allow you to use local files to solve missions. More info in a blog post.
In order to install CheckiO client you'll need installed Python (version at least 3.8)
Install CheckiO Client first:
pip3 install checkio_client
Configure your tool
checkio --domain=py config --key=
Sync solutions into your local folder
checkio sync
(in beta testing) Launch local server so your browser can use it and sync solution between local file end extension on the fly. (doesn't work for safari)
checkio serv -d
Alternatevly, you can install Chrome extension or FF addon
checkio install-plugin
checkio install-plugin --ff
checkio install-plugin --chromium
Read more here about other functionality that the checkio client provides. Feel free to submit an issue in case of any difficulties.
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