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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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7 kyu
Even odd disparity
4,561KenKamau
Fundamentals
6 kyu
Find the unique number
156,594isqua
Fundamentals
Algorithms
Arrays
Performance
6 kyu
Leaderboard climbers
1,380topping
Lists
Fundamentals
6 kyu
N smallest elements in original order
3,035GiacomoSorbi
Arrays
Lists
Data Structures
Algorithms
4 kyu
RoboScript #3 - Implement the RS2 Specification
887donaldsebleung
Esoteric Languages
Interpreters
Regular Expressions
Algorithms
6 kyu
Radix Tree
240suic
Data Structures
Algorithms
Retired
Escape the Mines ! (retired)
2,510damned3
Data Structures
Algorithms
Puzzles
Graph Theory
6 kyu
Guess the array
352ice1000
Puzzles
Algorithms
Arrays
Beta
Gif Animation and Transparency
9rsa
Status:Testing & feedback needed
Estimated Rank:
4 kyu
Algorithms
5 kyu
Esolang Interpreters #2 - Custom Smallfuck Interpreter
4,076donaldsebleung
Esoteric Languages
Interpreters
Algorithms
Tutorials
4 kyu
Esolang Interpreters #3 - Custom Paintf**k Interpreter
2,918donaldsebleung
Esoteric Languages
Interpreters
Algorithms
Tutorials
7 kyu
Clean up after your dog
5,339PG1
Fundamentals
Strings
Arrays
Mathematics
6 kyu
Clay Pigeon Shooting
1,063PG1
Fundamentals
Arrays
Strings
7 kyu
Slaphead
2,819PG1
Fundamentals
Strings
Arrays
7 kyu
Cat and Mouse - Easy Version
10,293PG1
Fundamentals
Strings
7 kyu
Numbers to Letters
8,552PG1
Fundamentals
Strings
Arrays
7 kyu
Sort by Last Char
10,156PG1
Fundamentals
Strings
Arrays
Sorting
8 kyu
Sum Mixed Array
109,979PG1
Fundamentals
Strings
Arrays
6 kyu
Cat and Mouse - Harder Version
2,649PG1
Fundamentals
Strings
Arrays
7 kyu
The Office III - Broken Photocopier
5,522PG1
Fundamentals
Strings
Arrays
8 kyu
Remove String Spaces
278,243PG1
Fundamentals
Strings
7 kyu
Holiday III - Fire on the boat
7,075PG1
Fundamentals
Arrays
Strings
7 kyu
Holiday II - Plane Seating
2,198PG1
Fundamentals
Strings
Arrays
7 kyu
Hells Kitchen
4,658PG1
Fundamentals
Strings
Arrays
8 kyu
Is there a vowel in there?
17,486PG1
Fundamentals
Strings
Arrays
7 kyu
Numbers to Objects
4,640PG1
Fundamentals
Strings
Arrays
7 kyu
Shortest Word
256,133PG1
Fundamentals
7 kyu
Small enough? - Beginner
45,420PG1
Fundamentals
Arrays
8 kyu
You only need one - Beginner
159,556PG1
Fundamentals
Strings
Arrays
Retired
No Loops 2 - You only need one (retired)
17,529PG1
Fundamentals
Arrays
6 kyu
Who likes it?
369,015BattleRattle
Strings
Fundamentals
7 kyu
Square Every Digit
336,459MysteriousMagenta
Mathematics
Fundamentals
7 kyu
Which color is the brightest?
5,747avermakov
Algorithms
Strings
5 kyu
Mean Square Error
23,125kylehill
Arrays
Mathematics
Algorithms
6 kyu
Find within array
3,595kylehill
Arrays
Functional Programming
Fundamentals
5 kyu
Conway's Game of Life
2,364ssineriz
Games
Graphics
Puzzles
Cellular Automata
7 kyu
Compare 2 digit numbers
1,712mbicc
Fundamentals
Mathematics