Tricky String

Tricky String


...Samantha sat at her desk, her eyes scanning the words on the page in front of her. She had been reading the same paragraph over and over, but her mind couldn't seem to grasp the meaning behind the words. Frustration began to creep in as she tried to focus, but the words seemed to blur together. It was as if the author's thoughts were hidden in a maze, and she was struggling to find the right path. Samantha took a deep breath and closed her eyes, trying to clear her mind. Finally, a breakthrough. The thought she had been searching for emerged from the text, and she continued on with renewed determination. Sometimes, reading is a journey, and finding the right thought can be the most challenging part.

You are given a string. Somewhere in that text a word "CheckIO" has hidden. Your task is to find a place where word is hiding and make the minimum number of replacements to get it. Let's proceed with an example: for a string "xheckIO" you should replace only one symbol ("x" to "C") to get a desired word, on the other hand we can try to find it in more complex string: "CheckzzVSCheckIz", right answer here will be a string "CheckzzVSCheckIO" (only one replacemend has made "z" to "O").

  • Every string contains at least one of seven characters of the word "CheckIO" and there are enough symbols around it to obtain the necessary word.
  • If there are several ways to complete the task, just put the word in the first suitable place for that.

Input: A string (str).

Output: A string (str).


assert tricky_string("checkIO") == "CheckIO"
assert tricky_string("zcheckzz") == "zCheckIO"
assert tricky_string("SoManyChoicesHere") == "SoManyCheckIOHere"

How it is used: Enhances your strings analysis skill.

Precondition: The text can contain only [a-z, A-Z], 6 < len(string) < 100

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.

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!

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