Changing direction
You are given a sequence of integers. Your task in this mission is to find, how many times the sorting direction was changed in the given sequence. If the elements are equal - the previous sorting direction remains the same, if the sequence starts from the same elements - look for the next different to determine the sorting direction.
Let's look at the scheme:
There are three sorting directions:
- on the chunk 1, 2, 2 - up (increasing);
- on the chunk 2, 1 - down (decreasing);
- and on the chunk 1, 2, 2 - up again.
Input: List of integers (int).
Output: An integer (int).
Examples:
assert changing_direction([1, 2, 3, 4, 5]) == 0 assert changing_direction([1, 2, 3, 2, 1]) == 1 assert changing_direction([1, 2, 2, 1, 2, 2]) == 2
Preconditions:
- the sequence is non-empty;
- the elements are positive integers.
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.
Welcome to Pair Programming! Engage in real-time collaboration on coding projects by starting a session and sharing the provided unique URL with friends or colleagues. This feature is perfect for joint project development, debugging, or learning new skills together. Simply click 'Start Session' to begin your collaborative coding journey!
You are trying to join a pair programming session that has not started yet.
Please wait for the session creator to join.
It looks like the creator of the pair programming session closed the editor window.
It might happen accidentally, so that you can wait for reconnection.
