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.

2641 Collections Found

todo_mer
5185 kyuDer PapaWara
school
17225 kyumer_senseiWara
Quality
916 kyutxl
Retrain
475 kyurichkotzeFindmypast
Regex Katas
436 kyumD4ndr3London
Classes
246 kyumD4ndr3London
uncomplite
2155 kyukilowat2not have
Katas
6156 kyuSantiGC2damiesjm
ToDo
8123 kyuHugoHub
Week2
5216 kyuHackett
proximas
435 kyuosksanchBBVA
katas
3205 kyujavigabeupm
Fix
275 kyuLesRamerRight Rez
Master Spark
40162 kyulolisaGensokyo
first katas
6236 kyumblpzBigpoint
Interesting
12226 kyuantenorIstar
try
15184 kyucyloMircronManFullstack Academy
fun katas
18233 kyuzscheckOrigin Code Academy
Future
2236 kyuBinjaaaKisfaszuak
train
8137 kyuproyko
string etc
23256 kyulihuanshuai@douban
Math
5225 kyupegasusroeNeverland
ZR
7134 kyuTimKPINational Technical University of Ukraine 'Kyiv Polytechnic Institute'
ToDo
272 kyuMagyartneocase
Hmm
17224 kyuAnonGuyLoreto Coders
numerial
14246 kyulihuanshuai@douban
DO THESE
10166 kyustefanomartinengoDevMountain
TODO
2186 kyuNerRox
Montage
2103 kyuaaron.cClearlink
7 kyu
119277 kyuJtrumanLaunch School
C#
5223 kyuMaddiePComputershare
Javascript
7143 kyuMaddiePComputershare
SQL
514 kyuMaddiePComputershare
Wishlist
9142 kyubdupauEverest B.V.
primary
237 kyusaiful110816Govt. titumir college
Saved
4155 kyuJytanThe Firehose Project
JS Katas
2115 kyuxxnicklesStrayer
C# Katas
265 kyuxxnicklesStrayer
opasnost
6105 kyuusernamen7none
TODO
2205 kyusnrogers
Faves
3105 kyusregoIndependent Learner
Completed Katas
4187 kyutenorjasThe Iron Yard
ToDo List
3113 kyuDehelFnac (A3IS - Bluesoft Group)
Short tasks
296 kyumarkus.benkoUFYgQXV0b21vdGl2ZQ
To Do List
3185 kyuJBoku8Boku
Passerelle Numérique - Promo 4
7308 kyuJSpatimSimplonMars3, PassNum-Promo4
Challenging
26224 kyuKavignonNone
ANDis
13245 kyuAkallabetANDigital
gram
526 kyulihuanshuai@douban
Geometry
397 kyuDemonKingThe Coder School Palo Alto
Study language
19196 kyumD4ndr3London
Analize
446 kyumD4ndr3London
js
243 kyuhfdjbcodewars
toDo
4206 kyuPapavero
ToDo
3205 kyusrh_hskAbramov90
Math
30236 kyujuansgaitanCodeBase
To-Do
23225 kyuManish-GiriScryNet
Python_DAY2
8147 kyushadoWalkerCUFE2017
sql
516 kyulizhangyuanPeking University
Path Finder
523 kyuevkPSI RAS
Tuples
366 kyushadoWalkerCUFE2017
Files
266 kyushadoWalkerCUFE2017
Loops..
4128 kyushadoWalkerCUFE2017
Strings
6197 kyushadoWalkerCUFE2017
my thinkful
457 kyuscb102090Thinkful
katas I trained on
25215 kyuScottRudigerHack Reactor
Mathematics
6214 kyukodamanKodaman
RegEx
41196 kyujuansgaitanCodeBase
Optimization
43216 kyujuansgaitanCodeBase
Format
44206 kyujuansgaitanCodeBase
k-Primes
2215 kyukudrykunMIREA
Katas 6
296 kyuPepe el programas2damiesjm
Easy
18226 kyuguumasterIGZ, Intelygenz
NewMaterial
9166 kyuwarrenmui3225University of Chicago
SignalWarriors
18197 kyuru7hl355Signal
Interested
9215 kyunikitalarionovNo matter
Funny
297 kyunikitalarionovNo matter
Sorting
257 kyuJtrumanLaunch School
SQL Kata
715 kyuMackers78Computershare
CHECK
2125 kyuxFlokiIronhack
esolang
2114 kyujaykayGeekPeek&Poke
Interesting
5215 kyuKishorHoward University
Week #7
496 kyujsio001ALPHA Camp
Training JS
428 kyuToadiliciousGeneral Assembly
wow
3174 kyuBl00myITReck
Easiest
588 kyuToadiliciousGeneral Assembly
Haskell - unsolved
2216 kyueyesfrogUniversity Of Calgary
remain to be see
4205 kyuzyszysgithub
Haskell
2187 kyueyesfrogUniversity Of Calgary
Medium
585 kyuguumasterIGZ, Intelygenz
Katas
2127 kyuKeyko
C++
2224 kyuchan1600Simon Fraser University
kata need to work on
16204 kyuniceNickFullstack Academy 1710
The Kata I can't solve it
285 kyuEricwwwHangzhou Dianzi University
Functional
110226 kyujuansgaitanCodeBase
Officient
2125 kyuIllyismHowest
Todo
215 kyublackink000JS Killers
math
2196 kyuWeizhuoCaisjtu
ToDo
4154 kyuwrcs505Fullstack-1707-RM
COOL
6223 kyuNikitaMishinSPbU
todo
4174 kyupopovevgenyCDD73E07-4BBA-4BC3-BCC4-45EB98EA8D80
LV1871Azubis
8307 kyufracoonLV1871Ausbildung
hard
291 kyubajdccNJNU/CS 2012
\\TODO:
256 kyuBlaine.HaunClearlink
Ab
214 kyuAkshataK
Esolang
2203 kyublackink000JS Killers
inefficient - times out
2186 kyuchri55yDallasMakerspace
have to done
6136 kyummazziVORONEZH
TODO
6255 kyunatanaelsirqueiraEficiência Fiscal
encry
3225 kyuhappymffett
Filtering
48226 kyujuansgaitanCodeBase
ToDo
2115 kyumurrayrj
todoList
15233 kyuxerxes3117Free Code Camp
ComeBack
5183 kyudaddyyunFullstack 1709
High Quality C
15116 kyusiebenschlaeferjambit GmbH
Hard
2185 kyuekiju
Strange
4116 kyuVasiliiDroids Digital
Interesting Kata
6132 kyuammo888University of Michigan
One-Semicolon Java
614 kyuphantamanta44Iowa City Robotics
Strings + Streams
4186 kyukaklakariadaElektrobit Warriors
8 kyu
227317 kyuJtrumanLaunch School
train again
5205 kyucutezerocatHefei University of Technology
js
10205 kyuJFkh
Need to review
4103 kyuhzj1227Free Code Camp
DMSRuby: Arrays: Filtering
24147 kyustephenieDallasMakerspace
DMSRuby: Strings: Regex
8177 kyustephenieDallasMakerspace
Todo
17214 kyumrM
Favourite
2184 kyuzzeniZenLabs.pro
repeat
11105 kyuqu4d
DMSRuby: Strings: Arrays
14157 kyustephenieDallasMakerspace
DMSRuby: Numerals: Misc
6118 kyustephenieDallasMakerspace
katas_to_try
15145 kyudonaldkellynorthcoders
Stuff I don't Understand
498 kyustephenieDallasMakerspace
katasToDo
47204 kyuJonM90Fullstack Academy
DMSRuby: Control Flow
15168 kyustephenieDallasMakerspace
DMSRuby: OOP: Classes
9128 kyustephenieDallasMakerspace
DMSRuby: Hashes
478 kyustephenieDallasMakerspace
DMSRuby: Arrays: Sorting
518 kyustephenieDallasMakerspace
DMSRuby: Arrays: Looping
16177 kyustephenieDallasMakerspace
Nice solution
53215 kyumD4ndr3London
Good Practice
297 kyuandrew_vGeneral Assembly WDI
Week #6
277 kyujsio001ALPHA Camp
DMSRuby: Ranges
6177 kyustephenieDallasMakerspace
DMSRuby: Strings: Update
6127 kyustephenieDallasMakerspace
incomplete
2105 kyuxerxes3117Free Code Camp
Cool
3186 kyuroobd
Favorites & Interview Prep
11205 kyualiggHackbright Academy
Haskell-1Kyu
9141 kyudelta4dbad delta
TO memorize
315 kyuDemigodBSUIR
To Do
3103 kyutryencFullstack Academy 1511
Completed
11306 kyuseandinwiddieSean Dinwiddie
CLASS
696 kyuYG777
Nice kata
30205 kyumD4ndr3London
ES6
627 kyupockerheadArkanite
Todo
6213 kyutortuelbat
Javascript
7176 kyuMackers78Computershare
Interesting language features
3157 kyueryawenAkamai Technologies
Closures
215 kyujustwokeupRolling Scores School
php
2186 kyujoseasribeiro94UALG
Çözemediklerim
4206 kyuOidepusAnadolu University
Favorite Katas
13215 kyuheypanoPublicRelay
Interesting
5106 kyuslwBsu
todo
5192 kyucrusader8Cool Guys Who Don't Look At Explosions
7kyu
4127 kyuvlb834
Day of Code
6195 kyuRJB888Code Fellows
snow day
8164 kyugabrielx52Code Fellows
🐐
3196 kyuburno
JS Classes
427 kyupesh12Hack Your Future
Bit
276 kyudmivlge
Todo
215 kyuadamxtokyofreeCodeCamp Sydney
Possibly C++
9225 kyuAnatolij47IT STEP
Interesting
33244 kyualekoz47Strath Haven High School
Unlcoked
2105 kyuhsinteno
try later
19245 kyuchri55yDallasMakerspace
Go
2203 kyusupermaciz42
ToTry
7153 kyumasongallandDevMountain
string/char
8177 kyufelipe76UNIFESP
Week #4
377 kyujsio001ALPHA Camp
Esolang
2155 kyuGustarComputershare
doing
16223 kyuemotions
todo
13151 kyuimacg
1, 2, 3, 4, 5
10214 kyujuansgaitanCodeBase
TODO
255 kyuzmg_Netum
Recursion
17205 kyujuansgaitanCodeBase
Sorting
10116 kyujuansgaitanCodeBase
Andrew's
14306 kyuandrzejpuzynskiinfoShare Academy
RegExp
216 kyuxianminChina
FUNDAMENTALS
15217 kyuWAVESHEHAi
Starred
2174 kyumarcelinolNatalSolidario
recursion
278 kyuWAVESHEHAi
Java basics
1056 kyuszkrecsiCodecool
C# 6kyu
17225 kyuszkrecsiCodecool
C# 7kyu
24227 kyuszkrecsiCodecool
string
11207 kyuWAVESHEHAi
bestcode
3146 kyuanoopashokAmal jyothi collage
vector
7227 kyuWAVESHEHAi
todo
386 kyuhillmk
Useful math
495 kyuLufirFullstack Academy
Binary math
286 kyuLufirFullstack Academy
Katas
4155 kyuJesman22BBVA
Closures
337 kyumaklaut007KNURE
cq
7215 kyuiratusBLUETRADE
new
4135 kyuTheZioCloudITIS Cassino High School (Italy)
Pending
274 kyufgperianezNextail
Week #3
5226 kyujsio001ALPHA Camp
Have fun with Haskell
1171 kyuzjuweiyaodongZhejiang University
Todo
3143 kyuzhaqiangBeansmile
toDos
2147 kyusessionsloopholeforever_21
Python Kata
7126 kyuMackers78Computershare
Personal To Do: Python
5136 kyuTWDearthMillbrook High School
For Later
287 kyustephenieDallasMakerspace
JS
366 kyufinuaLoraShen
Collection
10217 kyuLensomProgrammer
Week #2
5197 kyujsio001ALPHA Camp
Cycling
996 kyujuansgaitanCodeBase
Cool Katas
1392 kyuFVM04Florida Vocational Institute
To-Do
23215 kyuse77enn
Algo
7174 kyuvasergenvs
a check
384 kyuouibrilLes Dévergondées du Nord-Pas-de-Calais
Saved
3104 kyu_trsAutovance
Stringovi
8155 kyuShacyMexicom
NewColl
253 kyumr.coubALTOP
Сложные комплексные задачки
2131 kyuJustSkivSaint Petersburg State University
Interviews
355 kyuwebbushkaSoFi, SLC JS Learners
to-dos
2155 kyujfakdnwTuring
C#
11215 kyuhurklord
collect
9131 kyuJackmrzhouZhejiang University
Tasks
4194 kyuKurn
TODO
2125 kyuqheolet
Equations
7206 kyujhoffnerCodewars
python more
517 kyuchickenrunFeng Chia University
FCU SMA PYTHON TEST
4147 kyuchickenrunFeng Chia University
RegEx's
7106 kyuchri55yDallasMakerspace
80's Kids
257 kyuchri55yDallasMakerspace
kek
295 kyufatpenguinoKaspi.kz
Favorite
4154 kyudefault23Fasten RUS
Favs
2117 kyumichaeljh89Pershing
TO-DO
3175 kyuspcbrnDevMountain
Interesting
10164 kyumrfracSIC Ugoria
Fundamentals - 1 liners
3207 kyuchri55yDallasMakerspace
For future
9222 kyuDima_the_PhysicistITMO Univ., Russia
LINQ
886 kyuUemoeCodingBlocks.net
Java Useful
16226 kyuacalabanoGrace Hopper 1704
Exercícios
357 kyujoaoCrulhasUNESP/Tray
2
7175 kyuMaciek53POSTECH
JavaScript
8204 kyuAnatolij47IT STEP
todo
3205 kyuamac0428
Todo
2131 kyublefevOnyx Zero
Encoding
17186 kyujuansgaitanCodeBase
Re-do
2147 kyuMichael D. Universidade Católica de Brasília
Kyu 7 katas
27197 kyuEric-DanielUniversiti Tunku Abdul Rahman
Kyu 8 katas
5137 kyuEric-DanielUniversiti Tunku Abdul Rahman
Mathematical Algorithms
27186 kyuEric-DanielUniversiti Tunku Abdul Rahman
JS
2176 kyuspong
Python Practice
595 kyuwinniezLaunch Code 101 Seattle
py
13176 kyuTrungLD269
Algorithms
3114 kyuSreeramUniversity of Bridgeport
MyColection
7205 kyujealmesaApamateSoft
Quyen
5182 kyuddellaquilaBBVA
kata
12194 kyuzhaozhiwei001Beihang University
ToSolve
5234 kyuLuchanos11-5
Hashes
487 kyualexscotttongeMakers Academy
low level to do's
3187 kyuchri55yDallasMakerspace
Beginner Kata - Python
8308 kyuComradeSlothThe Snaith School
todo
10243 kyu0b1ivioNFGRI
Arrays
8167 kyualexscotttongeMakers Academy
maths
4184 kyu0b1ivioNFGRI
CoolOnes
3115 kyumichel.eissaUniversity of Iowa
incomplete
276 kyuchri55yDallasMakerspace
My katas
1146 kyuMishabooDKBmed
ToDo
257 kyutalapiscorpinfo
Bits
15186 kyujuansgaitanCodeBase
Test
2195 kyuspaseaIT KPI Codewars
Interesting
276 kyuProtoGeneral Assembly
Esolang
2155 kyuddellaquilaBBVA
Guess the pattern
954 kyuBeastThe Real Beast
akhkaru
3206 kyuuggaeNetSuite
9-27
275 kyuhermanj13Coding Dojo
To do
9205 kyunerdynischalBath
todo
5254 kyuTomcat88
hard
2105 kyuxingskyhitthink
To-do
484 kyuSolycaNgee Ann Polytechnic
To-Do
245 kyudoublennsProgression
Interesting Parsing Kata
572 kyuAJFarmarThe Judd School
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
MyCodes
298 kyugauravkdeshmukhCodingDojo , University of Texas at Tyler , foobar , Brighter
EPAM JSA #1
11166 kyubeltekylevijs-academy
Most Popularity
40256 kyuDaniokMSTU Stankin
stuffed animals
394 kyuharkielPlatanoPower
2do
293 kyudeeruafreelance
sudoku
8112 kyugka
TODO
11215 kyudaniel.silvaCatho
simplify
5206 kyuchri55yDallasMakerspace
Pretty Problems
3166 kyustemvorkTU Delft
Very helpful
4107 kyuToadiliciousGeneral Assembly
Do Translation
11175 kyumD4ndr3London
Fun
20204 kyutimc950HealthcareFirst
Popular
7116 kyukgashokKGISL
TS: TODOS
14227 kyuclaudia84CASFEE17
Strings
4106 kyualexscotttongeMakers Academy
Collection
584 kyuGavinwxyXi'an Jiaotong Liverpool University
EF Interview
6136 kyuhlambethMakerSquare
Review
264 kyuasferFEUP
ToDo
8195 kyuclaudia84CASFEE17
7 kyu
4177 kyugopi34University
ice
5225 kyuiceriverTYUT
Do it later
9113 kyuEquimCentral South University
TODO
12243 kyuaarizaBBVA
Review
6206 kyusantosh-mnrecSchool
python fundamentals
465 kyukai0324code warhead
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
parser
11151 kyudelta4dbad delta
Favorites
24154 kyuzruFVitra
Tech Interview
4136 kyujchurley95General Assembly
JS
6186 kyuxianmin
ToDo
244 kyuautonomousRobotBrainz
MY CODE
2185 kyunasrin_49Sri Ramakrishna Engineering College
Algorithmic shti
7207 kyu1kbuxrobinhoodMiddlebury College
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
trierbo
2173 kyutrierboCSU
Fun with lists
1036 kyujanitormeiri-sveikata
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
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
Need_Fix
3205 kyuxueyaodeaiSangfor
Coding Meetup Series
1256 kyuchrisjmFreeCodeCamp
TODO
5104 kyuGrahamDCENTRIC
pearls
5164 kyuHashValIntel
Algorithm Exercise 's
375 kyuhalomn53OriginCodeAcademy
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