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.

  • Python · C++ · C#
  • Automated tests
  • AI code review
  • Community solutions
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4 challenges
Easy

Hollow Square

Draw the outline of a square with * characters.

BeginnerLearning-pathNested-loopsPatterns
No solutions yet
Medium

Number Spiral Lookup

Find a value by row and column in an expanding number spiral.

Patternsmath
No solutions yet
Easy

Number Triangle

Build a triangle of increasing numbers.

BeginnerLearning-pathNested-loopsPatterns
No solutions yet
Easy

Pyramid Rows

Draw a right-aligned pyramid of # blocks.

BeginnerLearning-pathNested-loopsPatterns
No solutions yet