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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
6 kyu
Zeros and Ones
812kodejuice
Puzzles
Logic
Algorithms
6 kyu
Convert string to camel case
205,681jhoffner
Regular Expressions
Algorithms
Strings
5 kyu
Can you get the loop ?
29,606Devouring
Algorithms
Linked Lists
Performance
5 kyu
Human Readable Time
150,913BattleRattle
Date Time
Mathematics
Algorithms
5 kyu
Josephus Permutation
16,767GiacomoSorbi
Mathematics
Permutations
Algorithms
Combinatorics
3 kyu
Make a spiral
15,287Bugari
Algorithms
Arrays
Logic
3 kyu
Esolang Interpreters #4 - Boolfuck Interpreter
2,176donaldsebleung
Esoteric Languages
Interpreters
Algorithms
Tutorials
4 kyu
Boggle Word Checker
3,772evan-eleven
Arrays
Recursion
Puzzles
4 kyu
How many numbers III?
4,608raulbc777
Fundamentals
Data Structures
Algorithms
Mathematics
Logic
4 kyu
Advanced Events
1,787akoptsov
Design Patterns
Event Handling
4 kyu
Dependency Injection
4,459kesheshyan
Regular Expressions
Design Patterns
Object-oriented Programming
Angular
4 kyu
Vigenère Cipher Helper
8,937jacobb
Algorithms
Ciphers
Security
Object-oriented Programming
Strings
5 kyu
Haskell List Dot Notation
477surtich
Functional Programming
Arrays
Algorithms
6 kyu
Unary function chainer
7,251tpatja
Functional Programming
Fundamentals
Retired
IQ Test (retired)
83,595AlexIsHappy
Fundamentals
Logic
6 kyu
Moves in squared strings (II)
5,058g964
Algorithms
Strings
6 kyu
Give me a Diamond
38,135jayeshcp
Strings
ASCII Art
Fundamentals
5 kyu
Rot13
97,440Rubikan
Ciphers
Fundamentals
6 kyu
Fibonacci, Tribonacci and friends
13,856GiacomoSorbi
Arrays
Lists
Number Theory
Fundamentals
6 kyu
String Evaluation
495sataman
Strings
Algorithms
7 kyu
Complementary DNA
236,186JustyFY
Strings
Fundamentals
7 kyu
Credit Card Mask
199,342samranjbari
Strings
Algorithms
7 kyu
Isograms
269,852chunjef
Strings
Fundamentals
7 kyu
Mumbling
241,676g964
Fundamentals
Strings
Puzzles
7 kyu
Vowel Count
438,996jayeshcp
Strings
Fundamentals
7 kyu
Highest and Lowest
315,206Deantwo
Fundamentals
Strings
8 kyu
Lexical this
2,848matt c
Fundamentals
8 kyu
Playing with cubes II
8,911Jotha
Fundamentals
Object-oriented Programming
5 kyu
Simple Pig Latin
171,803user2505876
Regular Expressions
Algorithms
5 kyu
Moving Zeros To The End
190,840xcthulhu
Arrays
Sorting
Algorithms
5 kyu
RGB To Hex Conversion
140,756jhoffner
Algorithms
6 kyu
Help the bookseller !
31,097g964
Fundamentals
Algorithms
6 kyu
Tribonacci Sequence
161,798GiacomoSorbi
Number Theory
Arrays
Lists
Fundamentals
6 kyu
The Supermarket Queue
54,649mattlub
Arrays
Fundamentals
6 kyu
Multiples of 3 or 5
450,021jhoffner
Mathematics
Algorithms
6 kyu
Split Strings
168,623jhoffner
Regular Expressions
Strings
Algorithms
6 kyu
Highest Scoring Word
106,544PG1
Fundamentals
Strings
Arrays
6 kyu
Build Tower
107,0818fdafs2
Strings
ASCII Art
Fundamentals
6 kyu
Which are in?
82,893g964
Arrays
Lists
Strings
Refactoring
6 kyu
Break camelCase
128,950hakt
Strings
Fundamentals
Retired
Character Frequency (retired)
6,074MysteriousMagenta
Fundamentals
Strings
8 kyu
Drink about
53,095darlanmendonca
Fundamentals
8 kyu
Triple Trouble
20,608G0ldenSp00n
Puzzles
8 kyu
Find Multiples of a Number
49,955Spherixo
Fundamentals
Arrays
8 kyu
Tip Calculator
16,993Katbow
Fundamentals
8 kyu
Total amount of points
117,936petrosernivka
Fundamentals
Arrays
Strings
8 kyu
A wolf in sheep's clothing
37,143jkempster34
Fundamentals
Arrays
7 kyu
Check the exam
33,397Dmitry Kudla
Fundamentals
Arrays
7 kyu
Are the numbers in order?
30,703donaldsebleung
Fundamentals
Mathematics
Algorithms
8 kyu
Collatz Conjecture (3n+1)
15,007Goncalerta
Fundamentals
Algorithms
Mathematics
8 kyu
Is this my tail?
28,509PG1
Debugging
8 kyu
A Strange Trip to the Market
16,192sergarrick
Regular Expressions
Strings
Fundamentals
8 kyu
What's the real floor?
45,820acadet
Fundamentals
8 kyu
Who is going to pay for the wall?
15,757mamafrantz
Fundamentals
Strings
8 kyu
How good are you really?
169,001Jotha
Fundamentals
8 kyu
Capitalization and Mutability
40,615kolohelios
Strings
Debugging
8 kyu
Merge two sorted arrays into one
39,297Y.y
Fundamentals
Arrays
5 kyu
Caesar Cipher Helper
5,214eugene-bulkin
Ciphers
Object-oriented Programming
Strings
Algorithms
5 kyu
PaginationHelper
42,558jhoffner
Object-oriented Programming
Arrays
Algorithms
5 kyu
Lazy Repeater
8,168nklein
Iterators
Algorithms
5 kyu
Vector class
8,829eugene-bulkin
Object-oriented Programming
Algorithms
Linear Algebra
5 kyu
Simple Events
6,117akoptsov
Design Patterns
Event Handling
Fundamentals
8 kyu
Bin to Decimal
33,926wichu
Binary
Fundamentals
8 kyu
Sum of positive
332,642JbPasquier
Arrays
Fundamentals
8 kyu
CSV representation of array
20,031Dmitry Kudla
Fundamentals
Arrays
Strings
8 kyu
String cleaning
28,302mkelty
Regular Expressions
Fundamentals
Strings
Retired
Man in the west (retired)
7,971vaca_gare
Fundamentals
8 kyu
Return Negative
371,062Deantwo
Fundamentals
8 kyu
Array plus array
90,542Dmitry Kudla
Fundamentals
Arrays
Debugging
8 kyu
Even or Odd
566,077suuuzi
Mathematics
Fundamentals
8 kyu
ASCII Total
14,517user3220651
Fundamentals
8 kyu
Find the Remainder
28,614constablebrew
Mathematics
Fundamentals
Draft
A function within a function
13,610amrdraz
Status:Draft
Estimated Rank:
7 kyu
Fundamentals
8 kyu
Calculate average
178,023wichu
Fundamentals
Arrays
6 kyu
Counting Duplicates
244,184kgashok
Strings
Fundamentals
6 kyu
Parse HTML/CSS Colors
2,782junthecoder
Fundamentals
Algorithms
Strings
Parsing
5 kyu
Regex Password Validation
30,103EricFreeman
Regular Expressions
Fundamentals