This function creates an List of lists. that represents a two-dimensional grid with the given number of rows and cols. This grid should contain the integers from
start + rows * cols - 1
in ascending order, but the elements of every odd-numbered row have to be listed in descending order, so that when read in ascending order, the numbers zigzag through the two-dimensional grid.
Input: Two ints rows and cols. One optional argument start.
Output: List of lists.
create_zigzag(3, 5) == [ [1,2,3,4,5], [10,9,8,7,6], [11,12,13,14,15] ] create_zigzag(5, 1) == [ , , , ,  ] create_zigzag(3, 3, 5) == [ [5, 6, 7], [10, 9, 8], [11, 12, 13] ]
The mission was taken from Python CCPS 109 Fall 2018. It is taught for Ryerson Chang School of Continuing Education by Ilkka Kokkarinen
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