The Longest Palindromic

The Longest Palindromic


Write a function that finds the longest palindromic substring of a given string. Try to be as efficient as possible!

If you find more than one substring, you should return the one that’s closer to the beginning.

Input: A text as a string.

Output: The longest palindromic substring.


assert longest_palindromic("abc") == "a"
assert longest_palindromic("abacada") == "aba"
assert longest_palindromic("artrartrt") == "rtrartr"
assert longest_palindromic("aaaaa") == "aaaaa"

Precondition: 1 < |text| ≤ 20
The text contains only ASCII characters.

Invalid hot key. Each hot key should be unique and valid
Hot keys:
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.

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