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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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84 challenges
Easy

Sum of Multiples

Add values below a limit divisible by any supplied factor.

BeginnerNumbers
Python C++ C#
0 solved
No solutions yet
Easy

Title Case

Capitalize the first letter of every word.

BeginnerStringsStudent-beginner
Python C++ C#
0 solved
No solutions yet
Easy

Armstrong Number

Check whether a number equals the sum of its digits raised to the digit count.

BeginnerNumbersStudent-beginner
Python C++ C#
0 solved
No solutions yet
Easy

Greatest Common Divisor

Find the largest number that divides both values.

BeginnerNumbersStudent-beginner
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

Power of Two

Check whether a number is a power of two.

BeginnerNumbersStudent-beginner
Python C++ C#
0 solved
No solutions yet
Medium

Tic-Tac-Toe Winner

Decide the result of a tic-tac-toe board.

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

First Unique Character

Find the first character that appears only once.

BeginnerDictionariesStringsStudent-beginner
Python C++ C#
0 solved
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Easy

Count Words

Count the words in a sentence.

BeginnerStringsStudent-beginner
Python C++ C#
0 solved
No solutions yet
Easy

Move Zeroes

Move every zero to the end while keeping the other order.

ArraysBeginnerStudent-beginner
Python C++ C#
0 solved
No solutions yet
Easy

Longest Word

Find the longest word in a sentence.

BeginnerStringsStudent-beginner
Python C++ C#
0 solved
No solutions yet
Easy

Factorial

Multiply all positive integers up to n.

Beginner
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

Fizz Buzz

Build a sequence using divisibility by 3 and 5.

BeginnerNumbers
Python C++ C#
0 solved
No solutions yet
Easy

Largest Digit

Find the largest decimal digit of a positive integer.

Beginner
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

Count Vowels

Count the vowels in a piece of text.

BeginnerStringsStudent-beginner
Python C++ C#
0 solved
No solutions yet
Easy

Anagram Check

Check whether two phrases use the same letters.

BeginnerStringsStudent-beginner
Python C++ C#
0 solved
No solutions yet