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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
Shortest Delivery Tour
Visit every city once and return home as cheaply as possible.
No solutions yet
Easy
Distance Between Points
Compute the straight-line distance between two points.
No solutions yet
Medium
List Primes With a Sieve
Find primes up to a limit by marking composite multiples.
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Medium
Flatten Arbitrarily Nested Lists (Recursion)
Practice recursion by flattening arbitrarily nested lists while skipping null entries.
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Easy
Doubling Grains on a Chessboard
Calculate a square’s grain count and the total on all 64 squares.
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Hard
Minimum Network Connection Cost
Choose undirected links so that every vertex can reach every other vertex, with minimum total cost.
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Medium
Shortest Weighted Routes
Find the minimum total route cost from city 1 to each city.
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Medium
Raise a Fraction to a Real Power
Raise a positive fraction to a real-valued exponent.
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Medium
Raise a Number to a Fractional Power
Raise a positive real number to a rational exponent.
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