Zigzag Array Zigzag Array

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 to 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) == [
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

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=

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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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