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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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4 kyu
Burrows-Wheeler-Transformation
1,914muesli4
Lists
Puzzles
Algorithms
2 kyu
Constructing a car #3 - On-Board Computer
58user5036852
Fundamentals
Object-oriented Programming
Logic
Data Structures
5 kyu
Constructing a car #2 - Driving
364user5036852
Fundamentals
Object-oriented Programming
Logic
Data Structures
5 kyu
Constructing a car #1 - Engine and Fuel Tank
910user5036852
Fundamentals
Object-oriented Programming
Logic
Data Structures
2 kyu
6 By 6 Skyscrapers
2,443FrankK
Mathematics
Puzzles
Games
Arrays
Matrix
Algorithms
5 kyu
Maximum subarray sum
79,487knotman90
Algorithms
Lists
Dynamic Programming
Fundamentals
Performance
3 kyu
Bloxorz Solver
426docgunthrop
Games
Puzzles
Game Solvers
Algorithms
4 kyu
Regular expression for binary numbers divisible by 5
2,201aswitalski
Binary
Algorithms
Regular Expressions
3 kyu
Rail Fence Cipher: Encoding and Decoding
8,558darrentburgess
Algorithms
Ciphers
Cryptography
Strings
Security
1 kyu
Four Pass Transport
234docgunthrop
Puzzles
Games
Logic
Algorithms
4 kyu
Product-Sum Numbers
85mertcanekiz
Mathematics
Algorithms
5 kyu
Connect 4
1,550adrian.eyre
Arrays
Fundamentals
2 kyu
Transforming Maze Solver
386docgunthrop
Algorithms
Arrays
Performance
Puzzles
3 kyu
Alphametics Solver
419docgunthrop
Puzzles
Performance
Cryptography
Algorithms
3 kyu
Blobservation
377docgunthrop
Logic
Games
Object-oriented Programming
Performance
Algorithms
3 kyu
Plants and Zombies
689docgunthrop
Logic
Games
Game Solvers
Algorithms
Object-oriented Programming
4 kyu
Tower Defense: Risk Analysis
192docgunthrop
Logic
Games
Algorithms
Object-oriented Programming
5 kyu
Interlaced Spiral Cipher
388docgunthrop
Ciphers
Strings
Algorithms
6 kyu
Connect Four: Unlimited Edition
58C_Minor
Games
Arrays
Data Structures
Fundamentals
Graph Theory
3 kyu
Count Connectivity Components
499ecolban
Strings
Algorithms
Graph Theory
5 kyu
Python's Dynamic Classes #3
422adam-tokarski
Fundamentals
Object-oriented Programming
7 kyu
Python's Dynamic Classes #2
1,056adam-tokarski
Fundamentals
Object-oriented Programming
7 kyu
Python's Dynamic Classes #1
1,583adam-tokarski
Fundamentals
Object-oriented Programming
4 kyu
Connect Four: Who Won?
1,219jnicol
Games
Arrays
Matrix
Algorithms
4 kyu
Compute a convex hull
416dustryder
Algorithms
Geometry
5 kyu
Integers: Recreation One
26,121g964
Fundamentals
Algorithms
3 kyu
Binomial Expansion
6,121TheDoctor
Mathematics
Algebra
Algorithms
6 kyu
Simple time difference
1,450KenKamau
Algorithms
Date Time
Strings
5 kyu
DNE equivalent to PEM? Prove It!
212yuxuanchiadm
Mathematics
Fundamentals
5 kyu
Fix the pipes
88dcieslak
Fundamentals
Strings
Arrays
7 kyu
Disemvowel Trolls
355,454osuushi
Strings
Regular Expressions
Fundamentals
7 kyu
Folding your way to the moon
9,524Voile
Mathematics
Fundamentals
4 kyu
N Linear
487coryshrmn
Algorithms
Mathematics
Refactoring
3 kyu
Make a spiral
14,596Bugari
Algorithms
Arrays
Logic
3 kyu
The Lift
3,325dinglemouse
Algorithms
Queues
Data Structures
1 kyu
Puzzle Fighter
173docgunthrop
Games
Logic
Game Solvers
Algorithms
2 kyu
Algebraic Isomorphism
530lolisa
Functional Programming
Fundamentals
Tutorials
3 kyu
RoboScript #4 - RS3 Patterns to the Rescue
546donaldsebleung
Esoteric Languages
Interpreters
Functional Programming
Algorithms
4 kyu
Area of House from Path of Mouse
139docgunthrop
Strings
Puzzles
Algorithms
2 kyu
Regular Expression - Check if divisible by 0b111 (7)
2,176Hacker Sakana
Puzzles
Regular Expressions
Strings
Algorithms
2 kyu
Debugger
630Dundee
Metaprogramming
3 kyu
Screen Locking Patterns
4,679rsalgado
Mathematics
Combinatorics
Geometry
Algorithms
Graph Theory