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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.

  • Python · C++ · C#
  • Automated tests
  • AI code review
  • Community solutions
Learning path
150
Challenges
2
Solutions shared
3
Languages

All challenges

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40 challenges
Medium

Recursive Power

Compute a power recursively by halving the exponent.

BeginnerLearning-pathRecursion
Python C++ C#
0 solved
No solutions yet
Easy

First Negative Index

Find where the first negative number appears.

ArraysBeginnerLearning-path
Python C++ C#
0 solved
No solutions yet
Easy

Power by Repeated Multiplication

Raise a number to a power with a loop.

BeginnerLearning-pathLoops
Python C++ C#
0 solved
No solutions yet
Easy

Sum of Odd Numbers

Add every odd number up to a limit.

BeginnerLearning-pathLoops
Python C++ C#
0 solved
No solutions yet
Easy

Row Sums

Add up every row of a grid.

BeginnerGridsLearning-path
Python C++ C#
0 solved
No solutions yet
Easy

Cart Total With Discount

Total a shopping cart and apply a discount above a threshold.

ArraysBeginnerFunctionsLearning-path
Python C++ C#
0 solved
No solutions yet
Easy

Swap First and Last

Exchange the first and last items of a list.

ArraysBeginnerLearning-path
Python C++ C#
0 solved
No solutions yet
Easy

Largest of Three

Pick the largest of three numbers without a built-in max.

BeginnerConditionsLearning-path
Python C++ C#
0 solved
No solutions yet
Easy

Countdown to Liftoff

Count down from a number and end with Liftoff!

BeginnerLearning-pathLoops
Python C++ C#
0 solved
No solutions yet
Easy

Body Mass Index

Compute BMI from weight and height.

BeginnerLearning-pathVariables
Python C++ C#
0 solved
No solutions yet
Easy

Multiplication Table Row

List the first multiples of a number.

BeginnerLearning-pathLoops
Python C++ C#
0 solved
No solutions yet
Easy

Letter Grade

Turn a test score into a letter grade.

BeginnerConditionsLearning-path
Python C++ C#
0 solved
No solutions yet
Easy

Count Positive Numbers

Count the values greater than zero in a list.

ArraysBeginnerLearning-path
Python C++ C#
0 solved
No solutions yet
Easy

Password Rules Check

Check a password against simple strength rules.

BeginnerConditionsLearning-pathStrings
Python C++ C#
0 solved
No solutions yet
Easy

Above-Average Values

Keep the values that are greater than the average.

ArraysBeginnerLearning-path
Python C++ C#
0 solved
No solutions yet
Easy

Point Quadrant

Find which quadrant a point lies in.

BeginnerConditionsLearning-path
Python C++ C#
0 solved
No solutions yet
Easy

Ticket Price by Age

Choose a cinema ticket price from the visitor's age.

BeginnerConditionsLearning-path
Python C++ C#
0 solved
No solutions yet
Easy

Absolute Value Without abs

Compute an absolute value with a condition.

BeginnerConditionsLearning-path
Python C++ C#
0 solved
No solutions yet