The Most Wanted Letter

The Most Wanted Letter

We have prepared a set of Editor's Choice Solutions. You will see them first after you solve the mission. In order to see all other solutions you should change the filter.

Дан текст, который содержит различные английские буквы и знаки препинания. Вам необходимо найти самую частую букву в тексте. Результатом должна быть буква в нижнем регистре.
При поиске самой частой буквы, регистр не имеет значения, так что при подсчете считайте, что "A" == "a". Убедитесь, что вы не считайте знаки препинания, цифры и пробелы, а только буквы.


Если в тексте две и больше буквы с одинаковой частотой, тогда результатом будет буква, которая идет первой в алфавите. Для примера, "one" содержит "o", "n", "e" по одному разу, так что мы выбираем "e".

Вх. данные: Текст для анализа, как строка.

Вых. данные: Наиболее частая буква, как строка.


assert checkio("Hello World!")...
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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=

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.

Pair Programming (Beta-version)

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!

Waiting for Pair Programming to start...

You are trying to join a pair programming session that has not started yet.

Please wait for the session creator to join.

Waiting for Pair Programming to reconnect...

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.

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