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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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Easy
DNA to RNA Transcription
Build an RNA string by replacing every DNA character with its partner.
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Medium
Nearest Smaller Value to the Left
For each number, find the closest earlier position containing a strictly smaller number.
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Easy
Least Common Multiple
Find the smallest positive number divisible by both values.
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Easy
Acronym Generator
Create an acronym from the first letter of every word, in uppercase.
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