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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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Hard
Minimum Window Substring
Find the shortest piece of text containing all required characters.
No solutions yet
Medium
Recursive Palindrome
Check a palindrome recursively, ignoring case and punctuation.
No solutions yet
Easy
Hamming Distance
Compare two DNA strings position by position and count the differences.
No solutions yet
Hard
Find Many Patterns in Text
For each requested pattern, decide whether it appears as a contiguous substring anywhere in the shared text.
No solutions yet