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- Challenges
Programming Challenges
Strengthen your problem-solving skills with language-neutral challenges you can solve in Python, C++, or C#. Every submission is checked by automated tests and reviewed by AI.
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- Challenges
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Easy
Hamming Distance
Compare two DNA strings position by position and count the differences.
No solutions yet
Medium
Nearest Smaller Value to the Left
For each number, find the closest earlier position containing a strictly smaller number.
No solutions yet
Easy
Acronym Generator
Create an acronym from the first letter of every word, in uppercase.
No solutions yet
Easy
Hours, Minutes, and Seconds
Convert a duration in seconds to a compact readable string.
No solutions yet