For the Robots the decimal format is inconvenient. If they need to count to "1", their computer brains want to count it in the binary representation of that number. You can read more about binary here .
You are given a number (a positive integer). You should convert it to the binary format and count how many unities (1) are in the number spelling. For example: 5 = 0b101 contains two unities, so the answer is 2.
Input: A number as a positive integer.
Output: The quantity of unities in the binary form as an integer.
checkio(4) == 1 checkio(15) == 4 checkio(1) == 1 checkio(1022) == 9
How it is used: How to convert a number to the binary form. It can be useful for Computer Science purposes.
Precondition: 0 < number ≤ 2 32
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
(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 --ff
checkio install-plugin --chromium