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Start training on this collection. Each time you skip or complete a kata you will be taken to the next kata in the series. Once you cycle through the items in the collection you will revert back to your normal training routine.

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Ad
8 kyu
Basic subclasses - Adam and Eve
19,267hansrusten
Fundamentals
Object-oriented Programming
8 kyu
Color Ghost
20,698ogryzek
Object-oriented Programming
Fundamentals
8 kyu
OOP: Object Oriented Piracy
21,821By-The-Ocean
Object-oriented Programming
Fundamentals
8 kyu
Finish Guess the Number Game
10,388brunolm
Fundamentals
Object-oriented Programming
8 kyu
Classy Classes
18,307matt c
Fundamentals
Object-oriented Programming
8 kyu
Classy Extentions
12,675matt c
Fundamentals
Object-oriented Programming
8 kyu
Playing with cubes II
8,930Jotha
Fundamentals
Object-oriented Programming
7 kyu
Remove All The Marked Elements of a List
11,793raulbc777
Fundamentals
Algorithms
Data Structures
7 kyu
Person Class Bug
7,818jhoffner
Debugging
Object-oriented Programming
7 kyu
User class for Banking System
4,397FourthFan
Fundamentals
Object-oriented Programming
7 kyu
Two fighters, one winner.
28,820Scopula
Games
Algorithms
Logic
Fundamentals
7 kyu
Python's Dynamic Classes #1
1,770adam-tokarski
Fundamentals
Object-oriented Programming
7 kyu
Python's Dynamic Classes #2
1,164adam-tokarski
Fundamentals
Object-oriented Programming
5 kyu
Python's Dynamic Classes #3
477adam-tokarski
Fundamentals
Object-oriented Programming
7 kyu
Make Class
2,522Jomopipi
Object-oriented Programming
Algorithms
7 kyu
Testing 1-2-3
81,599acr
Arrays
Fundamentals
7 kyu
Refactored Greeting
12,073jhoffner
Object-oriented Programming
Refactoring
7 kyu
These are not my grades! (Revamped !)
1,425kingcobra
Object-oriented Programming
Debugging
Fundamentals
7 kyu
Building Spheres
3,159NaMe613
Object-oriented Programming
Fundamentals
7 kyu
Split The Bill
8,700otajor
Fundamentals
Data Structures
7 kyu
The Lazy Startup Office
2,206Cleop
Arrays
Matrix
Fundamentals
7 kyu
Anything
717amrdraz
Object-oriented Programming
Fundamentals
7 kyu
Competitive eating scoreboard
1,518sofiapoh
Object-oriented Programming
Fundamentals
7 kyu
Building blocks
13,311NaMe613
Object-oriented Programming
Fundamentals
Retired
makeAcronym (retired)
1,601AkyunaAkish
Fundamentals
Strings
7 kyu
makeBackronym
6,610AkyunaAkish
Fundamentals
Strings
7 kyu
reverseIt
2,353AkyunaAkish
Fundamentals
Retired
Unlimited Sum (retired)
4,586Lordnibbler
Mathematics
Fundamentals
7 kyu
First-Class Function Factory
7,633otajor
Fundamentals
Functional Programming
Arrays
6 kyu
DefaultList
725beniolenio
Fundamentals
6 kyu
Who has the most money?
4,919MrAppa
Object-oriented Programming
Algorithms
6 kyu
JSON Class Decorator
485SquishyStrawberry
Fundamentals
Object-oriented Programming
6 kyu
Level Up!
191NULLHE4D
Iterators
Algorithms
6 kyu
Simple Web Framework #1: Create a basic router
1,624int3_0xcc
Object-oriented Programming
Arrays
Fundamentals
6 kyu
Image host filename generator
6,449int3_0xcc
Logic
Object-oriented Programming
Strings
Fundamentals
6 kyu
Implement the Fractions class
1,674Dr.RiD
Fundamentals
Object-oriented Programming
6 kyu
Expected Type Decorator
515filipkonieczny
Fundamentals
Design Patterns
Object-oriented Programming
6 kyu
Construct Graph Class (simple)
378Joz
Object-oriented Programming
Fundamentals
Graph Theory
6 kyu
High score table
1,597kingcobra
Algorithms
Sorting
Searching
Arrays
Object-oriented Programming
6 kyu
RPS Knockout Tournament Winner
258FrankK
Games
Algorithms
Game Solvers
Design Patterns
Object-oriented Programming
6 kyu
Hex cipher
328kingcobra
Cryptography
Object-oriented Programming
Ciphers
Algorithms
6 kyu
Bingo Card
6,896FrankK
Games
Algorithms
6 kyu
A functional deck of cards....
880thatrubylove
Functional Programming
Fundamentals
6 kyu
Sortable Shapes
2,874FrankK
Sorting
Fundamentals
Mathematics
Design Patterns
Arrays
Geometry
6 kyu
Simple Substitution Cipher Helper
3,794jacobb
Ciphers
Security
Object-oriented Programming
Strings
Algorithms
6 kyu
Timer Decorator
839filipkonieczny
Fundamentals
Design Patterns
Object-oriented Programming
Date Time
6 kyu
Keyword Cipher Helper
956jacobb
Cryptography
Ciphers
Security
Object-oriented Programming
Strings
6 kyu
You look like a classy instance! Show me what you've got! - Part 1
610Skratch
Data Structures
Strings
Lists
Fundamentals
Object-oriented Programming
6 kyu
Node Mania
1,225marcsantiago
Linked Lists
Algorithms
Data Structures
5 kyu
Readable Specification Pattern
86FArekkusu
Fundamentals
Object-oriented Programming
Design Patterns
5 kyu
Snakes and Ladders
7,472adrian.eyre
Design Patterns
Games
Fundamentals
5 kyu
Simple Finite State Machine Compiler
809awesomeaf
State Machines
Interpreters
Compilers
5 kyu
Vector Class
891Detry322
Fundamentals
Object-oriented Programming
5 kyu
Connect 4
1,612adrian.eyre
Arrays
Fundamentals
5 kyu
Limited number of instances
99FArekkusu
Object-oriented Programming
Metaprogramming
5 kyu
Refactor a node-based calculator (DRY)
130FArekkusu
Refactoring
Object-oriented Programming
Restricted
5 kyu
Lazy Repeater
8,176nklein
Iterators
Algorithms
5 kyu
Self-closing Cookie Jar
232ecolban
Object-oriented Programming
Fundamentals
5 kyu
Features of a Given Array
360raulbc777
Fundamentals
Data Structures
Algorithms
Sorting
Mathematics
Logic
Object-oriented Programming
5 kyu
Binary Search Trees
637ecolban
Object-oriented Programming
Algorithms
Data Structures
5 kyu
PaginationHelper
42,616jhoffner
Object-oriented Programming
Arrays
Algorithms
5 kyu
Caesar Cipher Helper
5,217eugene-bulkin
Ciphers
Object-oriented Programming
Strings
Algorithms
5 kyu
Vigenère Autokey Cipher Helper
1,233jacobb
Algorithms
Ciphers
Security
Object-oriented Programming
Strings
5 kyu
Vector class
8,837eugene-bulkin
Object-oriented Programming
Algorithms
Linear Algebra
4 kyu
5x5 Nonogram Solver
547Avanta
Algorithms
Logic
Games
Game Solvers
4 kyu
The Greatest Warrior
3,639BurstNova
Algorithms
Object-oriented Programming
4 kyu
Ranking Poker Hands
3,579FrankK
Games
Algorithms
Object-oriented Programming
4 kyu
Sortable Poker Hands
504FrankK
Games
Fundamentals
Sorting
Design Patterns
Algorithms
4 kyu
Vigenère Cipher Helper
8,955jacobb
Algorithms
Ciphers
Security
Object-oriented Programming
Strings
3 kyu
Metaclasses - Simple Django Models
332horejsek
Object-oriented Programming
Metaprogramming
Backend
3 kyu
Papers, Please
817docgunthrop
Object-oriented Programming
Games
Regular Expressions
Fundamentals
3 kyu
Blobservation
400docgunthrop
Logic
Games
Object-oriented Programming
Performance
Algorithms
2 kyu
Change detection decorator
203zellerede
Decorator
Algorithms
Metaprogramming
2 kyu
Full Metal Chemist #1: build me...
369Blind4Basics
Object-oriented Programming
Fundamentals
2 kyu
Debugger
695Dundee
Metaprogramming