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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
4 kyu
Simple Memory Manager
669SteveRuble
Linked Lists
Data Structures
Algorithms
3 kyu
Alphametics Solver
398docgunthrop
Puzzles
Performance
Cryptography
Algorithms
3 kyu
Rail Fence Cipher: Encoding and Decoding
7,990darrentburgess
Algorithms
Ciphers
Cryptography
Strings
Security
3 kyu
The builder of things
959jhoffner
Metaprogramming
Domain Specific Languages
Algorithms
Language Features
5 kyu
Build a quadratic equation
353wowthecoder
Mathematics
Strings
Algebra
Fundamentals
6 kyu
Leaderboard climbers
1,046topping
Lists
Fundamentals
5 kyu
Maximum subarray sum
74,996knotman90
Algorithms
Lists
Dynamic Programming
Fundamentals
Performance
6 kyu
Pairs of Bears
2,087PG1
Fundamentals
Strings
Arrays
3 kyu
Papers, Please
733docgunthrop
Object-oriented Programming
Games
Regular Expressions
Fundamentals
5 kyu
Escape with your booty!
534tl123
Puzzles
Games
Matrix
Simulation
4 kyu
Undirected weighted graph
174g964
Fundamentals
Lists
Matrix
Graph Theory
1 kyu
Hack-22
210jcsahnwaldt
Puzzles
5 kyu
Subsequence Sums
126tonylicoding
Dynamic Programming
Mathematics
Algorithms
6 kyu
RPS Knockout Tournament Winner
179FrankK
Games
Algorithms
Game Solvers
Design Patterns
Object-oriented Programming
3 kyu
Metaclasses - Simple Django Models
248horejsek
Object-oriented Programming
Metaprogramming
Backend
6 kyu
Tank Truck
4,715g964
Mathematics
Geometry
6 kyu
Weird IPv6 hex string parsing
576Timm3D
Parsing
Algorithms
6 kyu
Word search
281G_kuldeep
Fundamentals
5 kyu
Diophantine Equation
4,597g964
Fundamentals
Mathematics
Algebra
4 kyu
Mission: Impossible
162ferencDobi
Reflection
Fundamentals
1 kyu
To BrainFuck Transpiler
197ZED.CWT
Esoteric Languages
Parsing
Compilers
5 kyu
Tricky Min-Max
53el-f
Fundamentals
Puzzles
Binary
6 kyu
Rotate Array
2,114cjmcgraw
Arrays
Algorithms
5 kyu
Least Common Multiple
4,174xcthulhu
Mathematics
Algorithms
7 kyu
Hands Up
2,167nongrs
Fundamentals
Algorithms
6 kyu
Faro Shuffle Count
1,029DZGoldman
Lists
Iterators
Fundamentals
6 kyu
Change case
81k.steflovic
Fundamentals
5 kyu
Build a Car
294frameture
Object-oriented Programming
Fundamentals
5 kyu
The Clockwise Spiral
3,719alex.budiakov
Arrays
Puzzles
6 kyu
Ping Pong
569dinglemouse
Algorithms
5 kyu
Matching And Substituting
2,231g964
Fundamentals
5 kyu
#9 Matrices: Adding diagonal products
622raulbc777
Matrix
Algorithms
Fundamentals
6 kyu
Car Number Plate Calculator
1,513W_2004
Algorithms
Logic
Mathematics
Fundamentals
6 kyu
Urban Dictionary
1,993joh_pot
Algorithms
Object-oriented Programming
6 kyu
Parse HTML/CSS Colors
2,602junthecoder
Fundamentals
Algorithms
Strings
Parsing
6 kyu
CamelCase to underscore
1,009Blune
Fundamentals
Regular Expressions
Algorithms
5 kyu
Binary Tree Serpentine Traversal
420Ban-Ath
Binary Trees
Trees
Recursion
Algorithms
3 kyu
Breaking the Vigenère Cipher
338petermaier1
Ciphers
Cryptography
Algorithms
5 kyu
Primes in numbers
27,838g964
Fundamentals
Mathematics
1 kyu
Puzzle Fighter
168docgunthrop
Games
Logic
Game Solvers
Algorithms
6 kyu
Expected Type Decorator
453filipkonieczny
Fundamentals
Design Patterns
Object-oriented Programming
5 kyu
Find the unique string
5,198isqua
Fundamentals
Algorithms
Arrays
Strings
6 kyu
Killer Garage Door
1,695chainsaw-maniac
State Machines
Fundamentals
6 kyu
Game Hit the target - 2nd part
408Ruscore
Matrix
Arrays
Strings
Fundamentals
6 kyu
ADFGX Simplified
169Caders
Cryptography
Algorithms
Fundamentals
6 kyu
Acronym Buster
458pbywater
Regular Expressions
Parsing
Strings
Algorithms
4 kyu
Breadcrumb Generator
4,394GiacomoSorbi
Parsing
Regular Expressions
Algorithms
4 kyu
Multiplying numbers as strings
9,509osofem
Strings
Big Integers
Algorithms
1 kyu
Functional SQL
2,656surtich
Functional Programming
Algorithms
3 kyu
Make a spiral
13,745Bugari
Algorithms
Arrays
Logic
5 kyu
Rule 30
753MircoT
Lists
Arrays
Binary
Puzzles
4 kyu
Validate Sudoku with size `NxN`
8,867cbmono
Arrays
Puzzles
Algorithms
Object-oriented Programming
3 kyu
Binomial Expansion
5,540TheDoctor
Mathematics
Algebra
Algorithms
5 kyu
Directory tree
82ecolban
Fundamentals
4 kyu
ABC - Esoteric programming #2
206matt c
Interpreters
Esoteric Languages
Algorithms
6 kyu
Functional Lists
1,024nklein
Functional Programming
Lists
Data Structures
Algorithms
4 kyu
Functional Binary Trees
560nklein
Functional Programming
Binary Trees
Algorithms
4 kyu
Brainfuck Translator
782Varveyn
Esoteric Languages
Strings
4 kyu
Stepping Stones Puzzle
36rsa
Games
Lists
Data Structures
Puzzles
6 kyu
Merge in 2048
732mrfox
Games
Arrays
Algorithms