This function should take an list of strings and determine the longest common prefix among all the strings. If there is no common prefix, it should return an empty string.
Input: List of strings (str).
Output: String (str).
assert longest_prefix(["flower", "flow", "flight"]) == "fl" assert longest_prefix(["dog", "racecar", "car"]) == "" assert longest_prefix(["apple", "application", "appetizer"]) == "app" assert longest_prefix(["a"]) == "a"
How it’s used:
- in autocomplete systems to suggest the most likely completion;
- in file systems to suggest directory names based on current input;
- in DNA sequence alignment to identify common substrings.
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