What are collections?

Collections are a way for the community to curate groups of kata that can be trained on in a sequence. All collections are public. Eventually we will start to feature well crafted collections on other areas of the site.

How does this relate to bookmarks?

Bookmarking (starring) a kata is similar to collecting a kata, except that your bookmarks are kept private. They are also easily accessible via the top right bookmarks dropdown. If you intend to keep a list of kata you wish to work on later then bookmarks will serve you better.

Can I add to someone else's collection?

Only the warrior who created the collection can add to it. You are free to create your own collection with the same name. Kata are also searchable within the kata library by any collection name it is associated with. In this way you can easily find kata that span across multiple collections of the same name.

2222 Collections Found

7 kyu
65257 kyuJtrumanLaunch School
try later
2185 kyuchri55yDallasMakerspace
Esolang
2155 kyuddellaquilaBBVA
Quyen
5182 kyuddellaquilaBBVA
Guess the pattern
954 kyuBeastThe Real Beast
Python Practice
375 kyuwinniezLaunch Code 101 Seattle
MyColection
4195 kyujealmesaApamateSoft
Filtering
44226 kyujuansgaitanCodeBase
1, 2, 3, 4, 5
7214 kyujuansgaitanCodeBase
toDo
2177 kyuPapavero
akhkaru
3206 kyuuggaeNetSuite
ToDo
3185 kyusrh_hskAbramov90
9-27
275 kyuhermanj13Coding Dojo
To do
9205 kyunerdynischalBath
Arrays
7167 kyualexscotttongeMakers Academy
cq
6126 kyuiratusBLUETRADE
todo
5254 kyuTomcat88
2
256 kyuMaciek52POSTECH
hard
2105 kyuxingskyhitthink
To-do
484 kyuSolycaNgee Ann Polytechnic
Master Spark
35163 kyulolisaGensokyo
To-Do
885 kyuManish-GiriScryNet
To-Do
245 kyudoublennsProgression
Format
40206 kyujuansgaitanCodeBase
Interesting Parsing Kata
572 kyuAJFarmarThe Judd School
For future
8103 kyuDima_the_PhysicistITMO Univ., Russia
Hashes
287 kyualexscotttongeMakers Academy
TPI
41205 kyuLoganUEK
to do
7132 kyuMy-
katas_later
147265 kyuafractalCoding Blocks
Fundamentals
2136 kyuthe_marmotUniversity of Oxford
kyu4
3176 kyutenhilltreeSelf
Classes EZ
8117 kyubrunolmBravi
Nice solution
42205 kyumdandreLondon
ToDo
8214 kyuHugoHub
To-Do
18195 kyuse77enn
MyCodes
298 kyugauravkdeshmukhCodingDojo , University of Texas at Tyler , foobar , Brighter
Recursion
15205 kyujuansgaitanCodeBase
Math
25236 kyujuansgaitanCodeBase
EPAM JSA #1
11166 kyubeltekylevijs-academy
Most Popularity
40256 kyuDaniokMSTU Stankin
py
12176 kyuTrungLD269
stuffed animals
394 kyuharkielPlatanoPower
Study language
15176 kyumdandreLondon
2do
293 kyudeeruafreelance
sudoku
8112 kyugka
Possibly C++
7225 kyuAnatolij47IT STEP
JavaScript
7204 kyuAnatolij47IT STEP
TODO
11215 kyudaniel.silvaCatho
low level to do's
388 kyuchri55yDallasMakerspace
simplify
5206 kyuchri55yDallasMakerspace
Pretty Problems
3166 kyustemvorkTU Delft
Very helpful
4107 kyuToadiliciousGeneral Assembly
Do Translation
11155 kyumdandreLondon
Optimization
35216 kyujuansgaitanCodeBase
Bits
14186 kyujuansgaitanCodeBase
try
8134 kyucyloMircronManFullstack Academy
Fun
20204 kyutimc950HealthcareFirst
LINQ
786 kyuUemoeCodingBlocks.net
Completed Katas
2157 kyutenorjasThe Iron Yard
Popular
7116 kyukgashokKGISL
RegEx's
6107 kyuchri55yDallasMakerspace
TS: TODOS
14227 kyuclaudia84CASFEE17
Strings
4106 kyualexscotttongeMakers Academy
Collection
584 kyuGavinwxyXi'an Jiaotong Liverpool University
ToDo List
11134 kyuDehelA3IS - Bluesoft Group
EF Interview
6136 kyuhlambethMakerSquare
Review
264 kyuasferFEUP
ToDo
8195 kyuclaudia84CASFEE17
7 kyu
4177 kyugopi34University
ice
5225 kyuiceriverTYUT
Nice kata
23195 kyumdandreLondon
Do it later
9113 kyuEquimCentral South University
Fundamentals - 1 liners
2197 kyuchri55yDallasMakerspace
TODO
12243 kyuaarizaBBVA
Review
6206 kyusantosh-mnrecSchool
python fundamentals
465 kyukai0324code warhead
Cycling
896 kyujuansgaitanCodeBase
qweqwew
354 kyuRemery426Coding Dojo
goood
5195 kyukrelly
study
16167 kyuunsad
Sixers
2196 kyus33dco
Javascript Closures
425 kyuonggunhaoFullstack-1707-RM
js
2205 kyuGQM-dong
1kyu
18141 kyudelta4dbad delta
6 kyu
2176 kyugopi34University
Good ones!
5175 kyubutteredtoastbutteredtoast
parser
11151 kyudelta4dbad delta
Favorites
24154 kyuzruFVitra
Tech Interview
4136 kyujchurley95General Assembly
JS
6186 kyuxianmin
Interesting
9164 kyumrfracSIC Ugoria
ToDo
244 kyuautonomousRobotBrainz
MY CODE
2185 kyunasrin_49Sri Ramakrishna Engineering College
Algorithmic shti
7207 kyu1kbuxrobinhoodMiddlebury College
kata
11184 kyuzhaozhiwei001Beihang University
JS Practice
24214 kyucsjiangGrace Hopper 1610
TODO
6112 kyusmaclell
Anonymous
3196 kyuShadowfeindXVA Tech
Revist
7174 kyuhattoriryuGrid Overwatch Division
GO
5197 kyudmt.kir
Algorithms
2195 kyubikeshedderilluminators
Katas I like
5184 kyuambalaNone
Look Over Later
4165 kyudavidrd123Silicon Satori
Clever Ones
295 kyuMonteJaggerJaguarCo
NextOnes to do
8195 kyuahuertamIronhack
targets
16214 kyuyoungfeldtLogicworks
Js_fundamentals
247 kyuUemoeCodingBlocks.net
Katas
2126 kyuGibSral
Climbing the Ranks
3104 kyuandrevollrathlearncollective
TODO
2165 kyutibi.brb
JS
38215 kyutossev
Homework 6 (classes)
9106 kyujbellamNational Instruments
Alotest
4196 kyumfauziAlodokter
collection
5156 kyuyusufElnadyYusuf Technologies
Javascript stuff to learn
14165 kyumdandreCodeacademy London
trierbo
2173 kyutrierboCSU
Fun with lists
1036 kyujanitormeiri-sveikata
8 kyu
213287 kyuJtrumanLaunch School
Basic Python
31277 kyubraunmagrinNatalSolidario
Javascript_fundamentals
18186 kyukangli_chengCornell University
Ruby
6277 kyujchinkleForce Push, LLC
Work On Later
5104 kyulouisriversWashington University in St. Louis
str
266 kyunmiSimon Fraser University
Training JS
2057 kyuBl4ckR00kCSV - SLayer
8kyu Java
67228 kyuFodinProDvizhenie
Todo Kata
6215 kyuBallaresBrabanteSaint Louis University
AdEx Web Developer
5227 kyuPolatriteDanDan Studios, LLC.
AdEx Junior Growth
12277 kyuPolatriteDanDan Studios, LLC.
Todo
4174 kyuclementsDutiq
my wrongs
3136 kyuxch1029google
Haskell
23143 kyuAirtnpSJTU
Parsing
9127 kyuRenyxzAspiring Dev
Todo
5153 kyukeff
Object
777 kyuRenyxzAspiring Dev
Training 102
3127 kyurichkotzeFindmypast
Todo
2106 kyuZeveruz
good to know
2128 kyuhenikolettIndependent
Parser Series
6104 kyulxdlam美少女电脑技术交流会
Want to translate into Haskell
2117 kyulxdlam美少女电脑技术交流会
Higher Order Functions
1756 kyuarecvloheThe Iron Yard
8 kyu - Quick 'n' Easy
2128 kyuyaminaUniversity College London
Hard katas
4152 kyurusvalvtech
Interview Prep A
14218 kyumetaseanSLC JS Learners
basics
285 kyucta
C basics
2128 kyu1ric
fun
283 kyuSchwarzwaldZhejiang University
PHP basics
5176 kyuAnatolij47IT STEP
8 Kyu
298 kyujjmokPiktochart
Loss of Precision
3186 kyumdandreCodeacademy London
To DO
333 kyule-du6Stelau Conseil
Goldies
2131 kyuVlad94Home
Fun with ES6 Classes
627 kyudonaldsebleungThe Hong Kong University of Science and Technology
Array filtering
25147 kyuRenyxzAspiring Dev
Want to do
10122 kyutryggvigySpotify
RegEx
37186 kyujuansgaitanCodeBase
Solve in other language
3165 kyumdandreCodeacademy London
Need_Fix
3205 kyuxueyaodeaiSangfor
Coding Meetup Series
1256 kyuchrisjmFreeCodeCamp
TODO
5104 kyuGrahamDCENTRIC
pearls
5164 kyuHashValIntel
Algorithm Exercise 's
375 kyuhalomn53OriginCodeAcademy
Encoding
16166 kyujuansgaitanCodeBase
Collection
2187 kyutomomiCoder Factory Academy
RegEx
616 kyubowzerUniversity of Utah
Fun with trees
545 kyujanitormeiri-sveikata
CoolThings
244 kyuDeadRed6Free Code Camp
C++ Exercises
2175 kyubleishXACTPRM
later to do
2184 kyuluna0607Nanjing University
Java Some
3147 kyuzihanwangGoldman
interesting
2204 kyuGHajbaZühlke Engineering
Algorithms
295 kyuSreeramUniversity of Bridgeport
Js
11144 kyubzbqq123
excellent questions
8194 kyuvyasvishwasDipper Technologies Pvt Ltd
php
487 kyustaticoruntitle
Kata to train
6195 kyuGonArriviAudatex
todo
3144 kyufacedancerXATKA
TODO
283 kyuNek<>
ruby strong
2185 kyuashjambhulkarHammerHead
Junior Practice
23207 kyuGavinStarkThe Iron Yard
Training 101
5207 kyurichkotzeFindmypast
C# Kata
5186 kyuMackers78Computershare
Game
386 kyujeremydang2909Oulu University of Applied Sciences
retain Kata
485 kyuninoozTsinghua University
Javascript arrays
3117 kyucarusogBonsai Studio
Fun with F#
12176 kyuSteffenVogel_79CSV - SLayer
translate
256 kyumdandreCodeacademy London
Functional
109226 kyujuansgaitanCodeBase
FundamentalLanguage
577 kyusnikitin123software
Awesome
216 kyubingggThunder Network
TODO
272 kyuCatfiderCarleton University
My Kata's
356 kyuCatfiderCarleton University
Do it next
8204 kyulxdlam美少女电脑技术交流会
MyCol
264 kyuFIN
5 kyu
285 kyugopi34University
Should Solve
3191 kyubabakghCloud 66
Lambda Training
286 kyuMlekowPersonal
eerste
3198 kyutjipedX UT.6.01x
add
7144 kyuzjl767864079zjlchinese
TODO
344 kyujames1054Driebit
Good
333 kyuOrbry
Todo
364 kyuindriq
maybe
2132 kyumcharo
regex
8126 kyucipha
Do later
6113 kyusev4BSUIR
Homework 5
8175 kyujbellamNational Instruments
GWCG Practice JS Problems
3198 kyurmanglonaFree Code Camp Guam
math
2185 kyuMRQQ
Data Structures
996 kyuIsenrichOIsenrichO
Easy 6 kyus
25246 kyungmhprogrammingEvent Management Project
CodeBase
246 kyujuansgaitanCodeBase
pop
4205 kyuKrzys
Pendings
4184 kyuFrBosquetIronhack
Python Kata
3116 kyuMackers78Computershare
Javascript
376 kyuMackers78Computershare
Try this
2195 kyuThirumoorthiPsg institute of technology and applied research
collect
6131 kyuJackmrzhouZhejiang University
Best
285 kyumuxa89
To be translated to TypeScript
322 kyuAxureZhejiang University
To be translated into Haskell
212 kyuAxureZhejiang University
c++ fundamentals
2176 kyukurtosischeloveki
math
277 kyulebed
TODO
5123 kyucpupower
hard
2195 kyuj606888NTUST
Recursion
1996 kyubethiosBloc
Favourites
294 kyuhexodeYandex
FaC October
3496 kyuJocodeFounders & Coders
Timeout
2195 kyumichaleYuWuHan Unviersity of Technology
Unimplement
275 kyumichaleYuWuHan Unviersity of Technology
To do
49233 kyuRamsès-XIILLG
kata need to work on
15195 kyuniceNickFullstack Academy
regEx
6116 kyuMRQQ
tmp
274 kyuyurtaev
python
4134 kyucanwe
fp
225 kyulebed
1kyu
13111 kyuKorrigan42
like
3213 kyuEropi4
RegExp
7117 kyuRenyxzAspiring Dev
My katas
946 kyuMishabooDKBmed
elixir
3197 kyuskrypalykInnocode
My
10174 kyuisysoiBSU
Todo
444 kyudkov
Elegant Solution
5175 kyuninjasttuIthaca High School
C#
14175 kyutossev
Incomplete
3185 kyucyloMircronManFullstack Academy
Weekly Practice
7146 kyujarturomoraMathematics Research Center (CIMAT: Centro de Investigación en Matemáticas)
123
4175 kyugodSmack
clever
5205 kyuAlubaOoOzj
Swift study
2147 kyuMayciciR2Games
c#
4177 kyuYuuki77Kansaigadai
Algorithms
2106 kyualexscotttongeMakers Academy
katas I enjoyed
256 kyukammitama5Null Space Labs
Immutable
9216 kyujuansgaitanCodeBase
Java 6kyu
14216 kyuszkrecsiCodecool
todo
1194 kyusnahor
Fun with arrays
15166 kyuSteffenVogel_79CSV - SLayer
Solution Review
11187 kyukkavita92Makers Academy
Objects
1496 kyubethiosBloc
1
266 kyuPomkaizeSPBSTU
retrain
6157 kyumetaseanSLC JS Learners
Later
3156 kyunmsjha
hard
2175 kyuNei0427
Python to solve
33226 kyufinuaLoraShen
Screen Print
3104 kyuderkCollegeDevs
STL algorithm
4194 kyutomliQilinsoft
isqua javascript test
8137 kyuisquaHTML Academy
Exs
3131 kyualpardal
work on
145226 kyukammitama5Null Space Labs
Problems to remember
10185 kyuelizabethcswMakers Academy, MM
Later
275 kyuRobertEngelec4u
c# practice
9145 kyusador23Codecool
Homework 4
10184 kyujbellamNational Instruments
Math
2185 kyuMrRogerinoSea Lions 2017
rotate
6175 kyu2-up
ToSolve
286 kyuRat49Sperasoft
Difficult 8kyu python kata
2108 kyuastadThe Hollyfield School
Tough Challenges
6154 kyurstefanicAlgonquin Butts
TODO
3195 kyus11424
proximas
235 kyuosksanchBBVA
Sorting
9116 kyujuansgaitanCodeBase
next_level
4205 kyukangli_chengCornell University
Best Kata
2135 kyubioniwulfIMTP
Interesting
342 kyusador23Codecool
Ruby
10195 kyujkbenningtonGeneral Assembly
TryAtWork
295 kyuh1f1xImmobilienScout24
Hard
10132 kyuthehobbit85TheHobbit
ToDo
5155 kyugpower
T-shirt
3144 kyukapicalukFruit Stand
CODA 1
7176 kyuwillhawkCODA
[dev_guild.rb] week 3
8106 kyugiosaktiStarqle Indonesia
break
3135 kyummmtsymlovstroy.sale
4kyu
5164 kyuJusticeleegDevMountain
Easiest
478 kyuToadiliciousGeneral Assembly
TO-DO
2166 kyuspcbrn
Math problems
8194 kyumlatusRubyCon
2017
3186 kyuKooHKU
5kyu
385 kyuHuigz
Hard Katas
264 kyujack.sparrowJackSparrow
Homework 3
12205 kyujbellamNational Instruments
Complex Analysis
454 kyudonaldsebleungKellett School
Future
3203 kyupyro-botYGU
Homework 1
14227 kyujbellamNational Instruments
1
3186 kyujdall
Christoph
5186 kyugruenerPetzDREEBIT
1
234 kyukunjinkao
weird
12206 kyuLeungEr
TODO
7186 kyubirdmadEvl
High Quality C
14116 kyusiebenschlaeferjambit GmbH
to do
12136 kyushamanms
Python - Look Again
265 kyusheelrajOracle-Opower-IQA
Generator
775 kyujuansgaitanCodeBase
Good Techniques
6156 kyuiMadoocMadooc Inc.
todo
267 kyuzawrat
Regex
276 kyumdandreCodeacademy London
Do Later
6185 kyunicholassaviniNational Business Capital
Review
10184 kyuaarizaBBVA
Ruby Collection
8187 kyuTestarossatheFirehoseProject
algo
13145 kyu2-up
SQL Kata
415 kyuMackers78Computershare
Todo
12182 kyuqwertyniop1BSUIR
TRPI
10185 kyuLoganUEK
Interview
6147 kyuLaptopTheOneRuby-mine
Saved
3106 kyuggcadc
Data Structures
3175 kyujlee512University of Aucklad
BAI
875 kyuLoganUEK
OOP
875 kyuLoganUEK
review
386 kyudougglezDevMountain
solutions
297 kyuCjfinalNZSE
blub
385 kyuM4l3nahgs
SQL TODO
214 kyugarolardgarolard
Practice
297 kyuNuclearMonkeyFreecodecamp
mycollection
17204 kyuAbhishek India
Weekly Challenges
3186 kyuRobert-G-JMakers Academy
Basic
2176 kyuRohan SinghStudent
Decent solutions (mine)
275 kyubionboyUniversity of Louisville
Like it
2125 kyurtg
To do
383 kyuveosLublin University of Technology
incomplete
7195 kyutarun33self
Point-free
14196 kyujuansgaitanCodeBase
saved
563 kyugbynuMonsanto
To do
38226 kyuMarlenUEK
Math
3154 kyumaheshjagSky
C#
10195 kyuhurklord
Todo
9113 kyumoeishaa
Homework 2
13176 kyujbellamNational Instruments
Tough
373 kyupergk
a
2165 kyuDante165
toDO
7114 kyualina10b
Maths
22236 kyuIsenrichOIsenrichO
Katas
14166 kyuArtOsi
to_do
6104 kyugabrielbonner707 Pocket Gophers
to do
8175 kyuBaker641Chilluminati
Bronze Elixir
5217 kyurichkotzeFindmypast
2017
7124 kyuiamwyh
Collection1
8155 kyusmillaraaqFullstack 1706GH
easy lvl up
2143 kyuMalthorBLUETRADE
to do
3104 kyuAbhishek India
SQL
215 kyumdandreCodeacademy London
Future
3102 kyurayz13doomcode
to do
995 kyuMuffinGuestGymnasium 1, Perm
Easy 5 kyus
7105 kyungmhprogrammingEvent Management Project
in beta
772 kyumaallardWCS
To do
273 kyuPiotrBerebeckiFounders & Coders
ToSolve
3135 kyunoshten/a
VIP
3146 kyuMourintoKAD-IT
Collec2
7176 kyuSGem31TSEC
Fun katas
593 kyutoonAppsaloon
Study 2017
644 kyunancypie1131706-fsa
ClassType
225 kyubender-sanSan Jose State University
Engineering
10163 kyusiebenschlaeferjambit GmbH
Codewars Problems
2128 kyuiamsdharPurdue University - West Lafayette
正则
247 kyusamegekny
C++
464 kyuColdbergUnity Technologies
todo
8184 kyueyetone
TODO
292 kyugarloy
Reply
295 kyum-knabe-replyPortaltech Reply
Object oriented
6157 kyujeremydang2909Oulu University of Applied Sciences
Mcodes
216 kyumkrv
todo
4105 kyupmpmd
Conditionals
288 kyuRenyxzAspiring Dev
Loops
347 kyuRenyxzAspiring Dev
Analize
346 kyumdandreCodeacademy London
Fun
3106 kyucroycrafPurdue
really try, ok?
110205 kyukammitama5Null Space Labs
RoboScript
434 kyudonaldsebleungKellett School
ASCII Games
413 kyuVoileGensokyo
Python
2146 kyugdebenitoUPC
test
6186 kyu10011Todama
cool
682 kyucarkat
dpto
20226 kyuLoganUEK
ToDo
4193 kyuPISK12
Potential Katas
7206 kyubean00Learn to Code LA
For presentation
14196 kyuemccarthy510 Fullstack 1706GH
Favs
3165 kyuBukk
Completed
3187 kyujci55Humboldt State University
Math
2154 kyusupertoinoNone
Ruby
10186 kyuglynester
pending
5195 kyuLeo9130SKNCOE
Machine Learning
213 kyusmiksBigNest
Ciphers
247 kyungmhprogrammingEvent Management Project
TODO
211 kyuimacg
诡异
287 kyusamegekny
Ruby Practice
86246 kyukkavita92Makers Academy