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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
18,431hansrusten
Fundamentals
Object-oriented Programming
8 kyu
Color Ghost
19,150ogryzek
Object-oriented Programming
Fundamentals
8 kyu
OOP: Object Oriented Piracy
20,375By-The-Ocean
Object-oriented Programming
Fundamentals
8 kyu
Finish Guess the Number Game
9,697brunolm
Fundamentals
Object-oriented Programming
8 kyu
Classy Classes
16,980matt c
Fundamentals
Object-oriented Programming
8 kyu
Classy Extentions
11,027matt c
Fundamentals
Object-oriented Programming
8 kyu
Playing with cubes II
7,784Jotha
Fundamentals
Object-oriented Programming
7 kyu
Remove All The Marked Elements of a List
11,140raulbc777
Fundamentals
Algorithms
Data Structures
7 kyu
Person Class Bug
7,267jhoffner
Debugging
Object-oriented Programming
7 kyu
User class for Banking System
4,105FourthFan
Fundamentals
Object-oriented Programming
7 kyu
Two fighters, one winner.
27,555Scopula
Games
Algorithms
Logic
Fundamentals
7 kyu
Python's Dynamic Classes #1
1,599adam-tokarski
Fundamentals
Object-oriented Programming
7 kyu
Python's Dynamic Classes #2
1,067adam-tokarski
Fundamentals
Object-oriented Programming
5 kyu
Python's Dynamic Classes #3
427adam-tokarski
Fundamentals
Object-oriented Programming
7 kyu
Make Class
1,944Jomopipi
Object-oriented Programming
Algorithms
7 kyu
Testing 1-2-3
75,713acr
Arrays
Fundamentals
7 kyu
Refactored Greeting
11,442jhoffner
Object-oriented Programming
Refactoring
7 kyu
These are not my grades! (Revamped !)
1,307kingcobra
Object-oriented Programming
Debugging
Fundamentals
7 kyu
Building Spheres
2,880NaMe613
Object-oriented Programming
Fundamentals
7 kyu
Split The Bill
8,219otajor
Fundamentals
Data Structures
7 kyu
The Lazy Startup Office
2,005Cleop
Arrays
Matrix
Fundamentals
7 kyu
Anything
663amrdraz
Object-oriented Programming
Fundamentals
7 kyu
Competitive eating scoreboard
1,305sofiapoh
Object-oriented Programming
Fundamentals
7 kyu
Building blocks
12,102NaMe613
Object-oriented Programming
Fundamentals
7 kyu
makeBackronym
6,303AkyunaAkish
Fundamentals
Strings
Retired
Unlimited Sum (retired)
4,586Lordnibbler
Mathematics
Fundamentals
7 kyu
First-Class Function Factory
6,730otajor
Fundamentals
Functional Programming
Arrays
6 kyu
DefaultList
715beniolenio
Fundamentals
6 kyu
Who has the most money?
4,769MrAppa
Object-oriented Programming
Algorithms
6 kyu
JSON Class Decorator
460SquishyStrawberry
Fundamentals
Object-oriented Programming
6 kyu
Level Up!
185NULLHE4D
Iterators
Algorithms
6 kyu
Simple Web Framework #1: Create a basic router
1,549int3_0xcc
Object-oriented Programming
Arrays
Fundamentals
6 kyu
Image host filename generator
6,355int3_0xcc
Logic
Object-oriented Programming
Strings
Fundamentals
6 kyu
Fractions class
1,482Dr.RiD
Fundamentals
Object-oriented Programming
6 kyu
Expected Type Decorator
487filipkonieczny
Fundamentals
Design Patterns
Object-oriented Programming
6 kyu
Construct Graph Class (simple)
312Joz
Object-oriented Programming
Fundamentals
Graph Theory
6 kyu
High score table
1,470kingcobra
Algorithms
Sorting
Searching
Arrays
Object-oriented Programming
6 kyu
RPS Knockout Tournament Winner
244FrankK
Games
Algorithms
Game Solvers
Design Patterns
Object-oriented Programming
6 kyu
Hex cipher
315kingcobra
Cryptography
Object-oriented Programming
Ciphers
Algorithms
6 kyu
Bingo Card
6,627FrankK
Games
Algorithms
6 kyu
A functional deck of cards....
821thatrubylove
Functional Programming
Fundamentals
6 kyu
Sortable Shapes
2,629FrankK
Sorting
Fundamentals
Mathematics
Design Patterns
Arrays
Geometry
6 kyu
Simple Substitution Cipher Helper
3,620jacobb
Ciphers
Security
Object-oriented Programming
Strings
Algorithms
6 kyu
Timer Decorator
804filipkonieczny
Fundamentals
Design Patterns
Object-oriented Programming
Date Time
6 kyu
Keyword Cipher Helper
919jacobb
Cryptography
Ciphers
Security
Object-oriented Programming
Strings
6 kyu
You look like a classy instance! Show me what you've got! - Part 1
579Skratch
Data Structures
Strings
Lists
Fundamentals
Object-oriented Programming
6 kyu
Node Mania
1,176marcsantiago
Linked Lists
Algorithms
Data Structures
5 kyu
Readable Specification Pattern
84FArekkusu
Fundamentals
Object-oriented Programming
Design Patterns
5 kyu
Snakes and Ladders
6,969adrian.eyre
Design Patterns
Games
Fundamentals
5 kyu
Simple Finite State Machine Compiler
759awesomeaf
State Machines
Interpreters
Compilers
5 kyu
Vector Class
859Detry322
Fundamentals
Object-oriented Programming
5 kyu
Connect 4
1,553adrian.eyre
Arrays
Fundamentals
5 kyu
Limited number of instances
90FArekkusu
Object-oriented Programming
Metaprogramming
5 kyu
Refactor a node-based calculator (DRY)
109FArekkusu
Refactoring
Object-oriented Programming
5 kyu
Lazy Repeater
7,502nklein
Iterators
Algorithms
5 kyu
Self-closing Cookie Jar
213ecolban
Object-oriented Programming
Fundamentals
5 kyu
Features of a Given Array
335raulbc777
Fundamentals
Data Structures
Algorithms
Sorting
Mathematics
Logic
Object-oriented Programming
5 kyu
Binary Search Trees
611ecolban
Object-oriented Programming
Algorithms
Data Structures
5 kyu
PaginationHelper
40,196jhoffner
Object-oriented Programming
Arrays
Algorithms
5 kyu
Caesar Cipher Helper
4,924eugene-bulkin
Ciphers
Object-oriented Programming
Strings
Algorithms
5 kyu
Vigenère Autokey Cipher Helper
1,218jacobb
Algorithms
Ciphers
Security
Object-oriented Programming
Strings
5 kyu
Vector class
8,558eugene-bulkin
Object-oriented Programming
Algorithms
Linear Algebra
4 kyu
5x5 Nonogram Solver
513Avanta
Algorithms
Logic
Games
Game Solvers
4 kyu
The Greatest Warrior
3,476BurstNova
Algorithms
Object-oriented Programming
4 kyu
Ranking Poker Hands
3,313FrankK
Games
Algorithms
Object-oriented Programming
4 kyu
Sortable Poker Hands
462FrankK
Games
Fundamentals
Sorting
Design Patterns
Algorithms
4 kyu
Vigenère Cipher Helper
8,298jacobb
Algorithms
Ciphers
Security
Object-oriented Programming
Strings
3 kyu
Metaclasses - Simple Django Models
270horejsek
Object-oriented Programming
Metaprogramming
Backend
3 kyu
Papers, Please
775docgunthrop
Object-oriented Programming
Games
Regular Expressions
Fundamentals
3 kyu
Blobservation
378docgunthrop
Logic
Games
Object-oriented Programming
Performance
Algorithms
2 kyu
Change detection decorator
192zellerede
Decorator
Algorithms
Metaprogramming
2 kyu
Full Metal Chemist #1: build me...
349Blind4Basics
Object-oriented Programming
Fundamentals
2 kyu
Debugger
638Dundee
Metaprogramming