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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
Find Many Patterns in Text
For each requested pattern, decide whether it appears as a contiguous substring anywhere in the shared text.
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Easy
Least Common Multiple
Find the smallest positive number divisible by both values.
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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
Triangle Classification
Classify three side lengths as invalid, equilateral, isosceles, or scalene.
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Medium
Largest Prime Factor
Find the largest prime that divides a positive integer.
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Easy
Sum Even Fibonacci Terms
Add the even Fibonacci terms that do not exceed a limit.
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Easy
Hamming Distance
Compare two DNA strings position by position and count the differences.
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Medium
Can We Split Into Two Teams?
Decide whether people can be assigned to two teams so that each listed pair is on opposite teams.
No solutions yet