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Learning path coding challenges
Practise learning path with 40 coding challenges, from easy to hard. Every challenge runs in your browser with instant tests, an AI review of your code and community solutions to compare.
Easy · 35 Medium · 5
Skills you'll practise: Lists2D listsCountingArithmeticFormulasAccumulatorsAge rangesAveragesAvoiding double countsBase casesBoolean flagsBoundary values
- Python · C++ · C#
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- AI code review
- Community solutions
- 226
- Challenges
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All challenges
Search by topic, language, or difficulty.
Easy
Password Rules Check
Check a password against simple strength rules.
You'll learn
ValidationBoolean flags
No solutions yet
Easy
Sum of Odd Numbers
Add every odd number up to a limit.
You'll learn
For loopsAccumulators
No solutions yet
Easy
Power by Repeated Multiplication
Raise a number to a power with a loop.
You'll learn
Running productZero exponent
No solutions yet
Easy
Multiplication Table Row
List the first multiples of a number.
You'll learn
MultiplesBuilding lists
No solutions yet
Easy
Every Other Character
Keep the characters at even positions.
You'll learn
String indexingSteps
No solutions yet
Easy
Countdown to Liftoff
Count down from a number and end with Liftoff!
You'll learn
Reverse loopsLists
No solutions yet
Easy
Body Mass Index
Compute BMI from weight and height.
You'll learn
FormulasFloating point
No solutions yet
Easy
Cart Total With Discount
Total a shopping cart and apply a discount above a threshold.
You'll learn
ListsDiscount rules
No solutions yet
Easy
Swap First and Last
Exchange the first and last items of a list.
You'll learn
List indexingSwapping
No solutions yet
Easy
Letter Grade
Turn a test score into a letter grade.
You'll learn
if/elif chainsRanges
No solutions yet
Easy
Count Positive Numbers
Count the values greater than zero in a list.
You'll learn
ListsCounting
No solutions yet
Easy
Largest of Three
Pick the largest of three numbers without a built-in max.
You'll learn
ComparisonsCombining conditions
No solutions yet
Easy
Absolute Value Without abs
Compute an absolute value with a condition.
You'll learn
NegationNo built-ins
No solutions yet
Easy
First Negative Index
Find where the first negative number appears.
You'll learn
Linear searchEarly return
No solutions yet
Easy
Point Quadrant
Find which quadrant a point lies in.
You'll learn
CoordinatesSign checks
No solutions yet
Easy
Above-Average Values
Keep the values that are greater than the average.
You'll learn
Two passesFiltering
No solutions yet
Easy
Ticket Price by Age
Choose a cinema ticket price from the visitor's age.
You'll learn
Age rangesBoundary values
No solutions yet
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