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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
Snail
71,325stevenbarragan
Arrays
Algorithms
2 kyu
Simple SQL Engine
482SteveRuble
SQL
Parsing
Sets
Databases
Algorithms
1 kyu
Functional SQL
2,666surtich
Functional Programming
Algorithms
2 kyu
Ruby’s Eleven
352duchess_of_objects
Games
Security
Puzzles
Object-oriented Programming
4 kyu
Functional Binary Trees
562nklein
Functional Programming
Binary Trees
Algorithms
5 kyu
Binary Genetic Algorithms
1,624eugene-bulkin
Genetic Algorithms
Machine Learning
Fundamentals
Data Science
Tutorials
5 kyu
Image Processing
734constablebrew
Image Processing
Matrix
Algorithms
2 kyu
Evaluate mathematical expression
9,010ankr
Mathematics
Parsing
Algorithms
4 kyu
Hamming Numbers
10,949xcthulhu
Number Theory
Algorithms
4 kyu
Sort binary tree by levels
12,289kars7e
Trees
Binary Trees
Performance
Algorithms
Sorting
4 kyu
Sum Strings as Numbers
40,747nicknovitski
Strings
Big Integers
Algorithms
5 kyu
Monads: The Maybe Monad
441nklein
Monads
Functional Programming
Data Structures
Algorithms
5 kyu
Molecule to atoms
5,724romanzes
Parsing
Algorithms
Strings
4 kyu
Determining if a graph has a solution
1,460damned3
Algorithms
Data Structures
Graph Theory
4 kyu
BatchItemProcessor
245lunitik
Memoization
Algorithms
4 kyu
Explosive Sum
8,036surtich
Algorithms
Mathematics
Fundamentals
6 kyu
Point in Polygon
1,413osuushi
Geometry
Mathematics
Algorithms
3 kyu
Alphabetic Anagrams
5,871Azuaron
Mathematics
Logic
Strings
Algorithms
Retired
Escape the Mines ! (retired)
2,510damned3
Data Structures
Algorithms
Puzzles
Graph Theory
4 kyu
Undo/Redo
3,573surtich
Algorithms
Fundamentals
Object-oriented Programming
4 kyu
Validate Sudoku with size `NxN`
8,900cbmono
Arrays
Puzzles
Algorithms
Object-oriented Programming
4 kyu
LRU Cache
508xcthulhu
Data Structures
Metaprogramming
Algorithms
5 kyu
Vigenère Autokey Cipher Helper
1,205jacobb
Algorithms
Ciphers
Security
Object-oriented Programming
Strings
4 kyu
Simple Memory Manager
670SteveRuble
Linked Lists
Data Structures
Algorithms
Retired
Algebraic Data Types (retired)
370surtich
Algorithms
Functional Programming
Declarative Programming
Programming Paradigms
4 kyu
Pyramid Slide Down
17,121rodentrabies
Algorithms
Dynamic Programming
5 kyu
Morse Encoding
1,220constablebrew
Bits
Strings
Binary
Parsing
Algorithms
2 kyu
Whitespace Interpreter
1,068jacobb
Esoteric Languages
Interpreters
Algorithms
4 kyu
Binary multiple of 3
6,847rsalgado
Regular Expressions
Algorithms
Puzzles
Number Theory
4 kyu
Fancy Schmancy Sort
134osuushi
Arrays
Sorting
Object-oriented Programming
Algorithms
4 kyu
Simplifying multilinear polynomials
4,604SleepingCode
Mathematics
Strings
Regular Expressions
Parsing
Fundamentals
6 kyu
IPv4 to int32
10,260sahglie
Networks
Algorithms
Bits
Binary
Fundamentals
5 kyu
int32 to IPv4
24,784sahglie
Networks
Bits
Algorithms
Retired
Calculator (retired)
11,547obrok
Algorithms
Parsing
Logic
Strings
Expressions
Basic Language Features
Fundamentals
4 kyu
Fluent Calculator
1,807lukasz-lysik
Mathematics
Metaprogramming
4 kyu
Most frequently used words in a text
25,971markprzepiora
Strings
Filtering
Algorithms
Regular Expressions
4 kyu
Sum by Factors
18,387g964
Arrays
Algorithms
Mathematics
4 kyu
Breadcrumb Generator
4,409GiacomoSorbi
Parsing
Regular Expressions
Algorithms
5 kyu
GPS Navigation
484jakber
Algorithms
Graph Theory