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.

4809 Collections Found

Little code tricks
9288 kyudwiltbankOrigin Code Academy
Hit
9206 kyuchigo
Katas
9265 kyuxth0mas
Unsolved
2102 kyuHatteOneDevManifest
Python-8kyu
11248 kyusbravoBBVA
Daily Code Kata
70326 kyumamafrantzThe Iron Yard
потом
12242 kyuzhdanovmcn
test
8287 kyud0542218Feng Chia University
To Do
11296 kyuferencDobiCodecool
Memory
158346 kyu7097511hobby
random
2136 kyuzyqshepherdUESTC
Не решенные
4266 kyuLuckywolverineKozikovskaya secondary school
Collection1
7168 kyuSpeedeR_02SpeedeR_02
myc
4265 kyucarrotxu
my fuck
8235 kyuayyappa1school
OCT
2132 kyurexjw
Algorithm
4274 kyutheyou21UCLA
To solve
10133 kyuweirdoStewieConmio
To Try Again
2215 kyupaulbaker3Coding Ally
To do
68343 kyulcdssGeartec
TODO
4296 kyulonez
Todo
2256 kyuahzarkie
Py
355 kyuRJ0x001
Ausbildung
6297 kyuMattagohniSpeiNet
Junior Practice
27287 kyuGavinStarkThe Iron Yard
JS
15265 kyuCodepeace
ToDo
14315 kyujpacsaiUdacity Scholarship
katas_later
150355 kyuafractalCoding Blocks
backlog
17205 kyuDrXVII
try
594 kyuvimal116Leadbook
interview prep
3244 kyueweil505Grace Hopper 1710
To solve
33144 kyuhobovskyPDTec
Overranked
10113 kyuhobovskyPDTec
Fixme
7104 kyuhobovskyPDTec
RegExp
2135 kyuCybafunk-MonkeyISOBACAMPUS
Interview JavaScript
31275 kyuN1nj@Frontend Masters
Math
40316 kyujuansgaitanApify
ML
4106 kyujuansgaitanApify
Solve Later JS
6265 kyuEclipssisEclipssis
T R
20265 kyucliffstamp
Kunte Kinta
8175 kyuGorgorothTormentor
Ruby
13315 kyurekapap
python
4204 kyutjc17
Revise
8298 kyuksanBangalore Institute of Technology
cart
5113 kyulukehwangRGPKorea
Chess
18245 kyutrincot
Done
41366 kyuxavikSpain
TeamCulture
4254 kyuNakamutaTeamculture
Doable but long
7255 kyuThe ForceThe Galaxy
training
373 kyucliffhangerBazaarvoice
Java Kyu 8
101348 kyuGautam SarkarSchool
CoolOnes
4175 kyumichel.eissaGM Financial
solved
3136 kyuzamhaqNitte Meenakshi Institute Of Technology
Favorites
29215 kyuzruFVitra
001
4274 kyumpalinFinflo
Nice
2225 kyupaulogdm
wcs
15275 kyuakababWCS
1st
2134 kyuback0893
Maybe
5112 kyuPyQwerFIBO
To Do
2216 kyuPinguimFURG
Good Kata's
245 kyueaglejswww.eagle-js.com
The simplest basics
25328 kyuNeshkoOTargetflow
ToDos
5134 kyuTrollslayerDB Systel
ToDo
254 kyugibonz
TODO
2104 kyuTom2recSchool
v
2245 kyuakhamido
toDo
3154 kyuzutti
Algorithms
2115 kyuHatteOneDevManifest
Follow-up Needed
72316 kyuepark17Fullstack Academy
Problems to Solve
12227 kyuepark17Fullstack Academy
Favorites
484 kyumattbrendzelGeneral Assembly
Morse
3154 kyuZaharov98GrSU Grodno, Belarus
interesting
6266 kyujuroshNexit
easy 7 cpp
2107 kyuyasekYandex
6 kyu Problems to Solve
11166 kyuepark17Fullstack Academy
7 kyu Problems to Solve
297 kyuepark17Fullstack Academy
Want to do
394 kyupmacleanEastside Preparatory School
pgms
7246 kyuyondime_the 4thsilicon institute of technology
Vova
1067 kyuSlaviatorIT KPI
Backlog
286 kyujohnoroLambda School
DoLater
2156 kyukarimosno company
pre-section-1-2018
13257 kyuZiziou91northcoders
Do Later
1394 kyuMyDABDawd
toComplete
3204 kyuFlikoHard Knocks
1
2226 kyuj123j456University of Toronto
Fundies
3136 kyureefthebeatplug@The-Knowledge-House
Algorithms
7205 kyuSreeramUniversity of Bridgeport
Katas
2245 kyufilipperogerioOrganization
intressant
12194 kyulitemerafrukttretton37
Test Problems?
287 kyuprsmithRanken Technical College
Lab Problems?
3177 kyuprsmithRanken Technical College
To delete
224 kyuhobovskyPDTec
ToDos
573 kyur_prNeurovingiens
Haskell
276 kyusongerHarbin Insititution of Technology @ Weihai
Interviews
4125 kyujaviercfJCF design
Master Spark
46172 kyulolisaGensokyo
Numbers
16303 kyuhobovskyPDTec
Todo
14316 kyuMatoosh
Interrest
285 kyuArtificialMindЮжный Федеральный Университет
Kata
6225 kyuBizgisFTN Cacak
TO DO
6185 kyupetre11Not Celebrities
jjj
295 kyumatt-majorRoo Ltd.
Python Training
19366 kyusjottermanBravo Wellness
JS Training
22356 kyusjottermanBravo Wellness
PHP Training
14366 kyusjottermanBravo Wellness
Haskell
19297 kyuZSte
SQL
9247 kyufunk1d
kyu4
7216 kyutenhilltreeSelf
JS notes
2136 kyuchaminduLe Wagon
asd
4125 kyusqula
DoItLater
3156 kyuDarkFusion90Gaurav Sharma
Crypto
3135 kyuErynvorn123
unsolved
475 kyuchaoticsparksEPAM Systems
1
2265 kyuAl_Ts-
Geometry
13245 kyuhobovskyPDTec
interesting
3266 kyurichardsonjpPurwadhika
Undo
14253 kyuyiduiBUPT
1
2246 kyuukaraca
Hmm
27284 kyuAnonGuyCyber Discovery
Needs translations
8157 kyuTheLamiaMiskatonic University
So clever it is stupid
15268 kyuTheLamiaMiskatonic University
Excercises
3266 kyudmontalvo.mgmcsoft
TODO
31284 kyuFalkorX
To do
371 kyuveosLublin University of Technologies
collection1
5194 kyuxadahiyaUdacity
Exs
5234 kyuTyrionFrontHexlet
todo
2184 kyugnepoahs
ygy
2235 kyulukehwangRGPKorea
ReachForTheTop
281 kyuMindBenderMultiverseFreaks
5kyu
7196 kyuwavei125UDT
Algorithm
8142 kyuMoeYTomTongji Univercity
python
3155 kyupammuGladminds
Basic Syntax Explored
47337 kyuTheLamiaMiskatonic University
Difficult
2101 kyuMoeYTomTongji Univercity
DONE
8133 kyuMoeYTomTongji Univercity
Games
374 kyuMoeYTomTongji Univercity
KatasToDo
3144 kyupmaharanaThe Iron Yard
Python Problems
5276 kyuraigadMordor
python
3235 kyukscuben99srkr
PMT
3113 kyuBoccaccioUSTB
Playing Cards
12135 kyusarcomaorderandchaoscreative
Next time
2106 kyutonybugDon'tgiveafish
ToDo
4136 kyujarek-pieprzakinfoShare Academy
Todo
252 kyubhakta0007Bhakta0007
OOP
2156 kyusjottermanBravo Wellness
Fundamentals
21286 kyusjottermanBravo Wellness
for remi
3135 kyuhappymintyoContorion
Done
2146 kyulennartb
Working
2245 kyumihailo-misicCramick IT
dp
2104 kyupastelblue
Miracles
255 kyumarkus.benkoUFYgQXV0b21vdGl2ZQ
Try to optimize
14256 kyumarkus.benkoUFYgQXV0b21vdGl2ZQ
work on
5295 kyunikam
Python
4234 kyufunk1d
crap
5295 kyuandDevS
JS 8 Kyu
6278 kyuadamszabolcsCodecool
ne
2115 kyuexziron
Chemistry related katas
3115 kyucomputationlanLooking for opportunities to transition into software development
TODO
8285 kyuDendenysWest University of Timisoara
Succinct
12276 kyuL-PrimeTriumvirate Labs
6k
8196 kyujohn1k
Todo
5165 kyuDasBrainHRW
GoodCppProblem
12244 kyuyiduiBUPT
toDo
2116 kyupiotrlo
algorithm
4294 kyuedsolaterDongHua University
To try
8175 kyumamafrantzThe Iron Yard
todos
3216 kyukkapturPJATK
python case
394 kyu421024933liquidnetword.com
Ruby
2224 kyuneddy70Launch School
Tosti
2254 kyubretox
1
6156 kyuNik777WebTechart
Library usages
5138 kyuTheLamiaMiskatonic University
Need to Study
4115 kyuproconsulAzmodeus
TODO later
263 kyuannetekaNaUKMA
4ltr
2235 kyuCoroecramcooperatii
TODO
8275 kyuslou92
1
2225 kyudereira
TODO: Katas
353 kyucjthoma1Academy Pittsburgh
todo
10285 kyuoptionsit
javascript
285 kyuGoldFoolerOurchem
Silly Trivia
9278 kyuTheLamiaMiskatonic University
ToSolve
274 kyuchipkaEdvantis
Interessant
2135 kyusipol78cybersipol
Assessment: Buggy Katas
10158 kyuaspiditesKenzie Academy
Refactor
2205 kyuosksanchBBVA
Lists & Sorting
386 kyumadarpKenzie Academy
ES6
327 kyuJoreliaKodilla
Tricky Kotlin
915 kyuice1000Gensokyo
Out-beta
235 kyuhobovskyPDTec
Interesting
3115 kyutino@solarmonkey
JavaBasics
10266 kyuilarОнлайнъри за Онлайнъри
EasyJava
2226 kyuLawrenceKMoringa School
Temp
2165 kyuthevan96
sum
2138 kyuBillno
6
2215 kyuPeregaro
ToDo
3245 kyuPrzem@sAtena
PHP
316 kyuf4seth
AlgoBasics
7245 kyuilarОнлайнъри за Онлайнъри
Enjoyed
4265 kyu_woojiahao_Singapore Polytechnic
1
286 kyuJseon5
JavaExam
34315 kyuioanaandreea12The University of Edinburgh
TODO
7265 kyurishiosaurFramtida
various_learnings
367 kyupa85TCWroC++
lmao
263 kyuzfoong
later
23192 kyuTorkelUniversity of Manchester
to do
9142 kyuMy-
Graphs
453 kyuhobovskyPDTec
Math
2127 kyuL-PrimeTriumvirate Labs
Crypto
2116 kyuilarОнлайнъри за Онлайнъри
TODO
273 kyuta-jaGlobal Logic
AlgoSimpleBasics
3126 kyuilarОнлайнъри за Онлайнъри
Cool Katas
15103 kyuFVM04Florida Vocational Institute
Clever string subing
2216 kyucwfergusBiosearch Technologies
Knowledge Gaps - C#
297 kyuDerdsCardiff University
embedded_8kyu
3168 kyupa85TCWroC++
NewColl
393 kyumr.coubALTOP
Python_collection1
395 kyuzxzhuHuaZhong Agricultural University
good questions
5266 kyuutkarsht98REVA University
junior kata
4225 kyuekiadasb8823江南大学
FAC db week extra
717 kyumissKatiaPunterConstructor Labs
dataStruct
4154 kyuhuyhiNUPT
List
12276 kyuxbytes
Have fun with Haskell
1161 kyuzjuweiyaodongZhejiang University
Cigar Strings
216 kyuZarosRhodes College
uteis
3137 kyuSocialBugPTech
Math
2116 kyuSeWIRs
TypeScript for Beginners
7207 kyuMaikelNabilMikeNabil.net - Washington, DC
funny folks
9235 kyuvatsanDanforth Collegiate & Technical Institute
ToDo
273 kyujanbouillonRay Sono
R-J
868 kyulbvf50mobilepro.ruby team
Array methods
19296 kyudeniolpHTML Academy
TODO
2116 kyunoedlm
js katas
255 kyuAlexeyKKKaspersky Lab
Python_Challenges
2175 kyupbrignetiBelgrave Valley
NXt TM
6285 kyuloklaf
Snakes and Ladders
3255 kyudiptisheUniversity of Southern California
C#_col
2117 kyuAlexeyKKKaspersky Lab
Todo
234 kyuyim7
1
23276 kyuAndrewRiz
TODO
5185 kyuheptapod
Interesting
9295 kyuProtoGeneral Assembly
Challenging
29274 kyuKavignonMobeewave
Rust
36345 kyuimxiaohuiTuring Info.
fav
2146 kyuflxy
Training
9196 kyuclarkstachioSomerset Capital Group
Saved
6134 kyuiamtrsAutovance
Coding Dojo
6135 kyusebokopterUbermacht
ToDo
9256 kyuduco
Mine
235 kyuhobovskyPDTec
NEXT
2185 kyueff
Favorite Katas
2124 kyuNarimaanVGeorge Mason University
One
8265 kyuEli_G
C#
12275 kyuhurklord
interesting
2112 kyuyunaverisMarrani
Regex
3146 kyushth
OOP
377 kyustrama4
Favorite
3116 kyuKvaigonKAMAZ
ToDo
2113 kyuTimo-WeikeTechFak Uni Bielefeld
Alotest
6247 kyumfauziAlodokter
sss
12305 kyuDanielOrfeuUnicariocadev
Maths
3136 kyushth
Algorithm Practice
3225 kyuzhj0924University of California San Diego
Functional
2237 kyusmithandrewlSEMO ACM
董杰
2116 kyudongjie915xdht
To do
4124 kyuJoe_SimpsonReward
To do
4224 kyuAnt1-DLaPause
1kyu
2122 kyujohnnywidthSoftServe
closely done
5147 kyuMMN_1UC Davis
noice lol
237 kyuYusuf KaramustafaogluYedikuleHighSchool
pp
5117 kyuWirekCodecool
BFS SHITPOST
1183 kyuTorkelUniversity of Manchester
Ques
3104 kyumohdasimLitmus World
myKataList
2145 kyuFlamyoadUTEM
Math
4196 kyudeniolpHTML Academy
para fazer
2177 kyuThiago LemosUnicariocadev
Objects
1097 kyuhgt
No hablo
335 kyuhobovskyPDTec
Solved ...
10256 kyufilepnoraCodecool
To Solve
6152 kyuKhAA1C-KSU
Fun ones
245 kyuThe ForceThe Galaxy
Java
8367 kyuminalouisITBH
PHP
2187 kyuminalouisITBH
SQL
616 kyuSkrety
Favor
262 kyumercurialleeSi Chuan University, China
Algorithm
293 kyushuweideSimbo Dev
TODO
2136 kyuoceans1
todo
2224 kyuQbius
Polynomials
2695 kyuhobovskyPDTec
На будущее
3102 kyuAndronikIpsos iField
str
3166 kyu53tangyabuli
reduce
4127 kyuMRQQ
recursive
11156 kyuMRQQ
7Kyu
13227 kyupreal0517
Jo's to dos
11163 kyujospackmanIress
TODO
2235 kyuwinter_soldier13AnonymousPirates
new
217 kyudaniellabiancaHartcode
Python 7 kyu
64327 kyuadamszabolcsCodecool
python
3216 kyukarthikraja34Prince shri venkateswara engineering college
TODO
12265 kyudaniel.silvaCatho
4 kata
2224 kyuallashmantro.net GmbH
nice
3195 kyuanonrab
katas_to_try
16205 kyudonaldkellynorthcoders
Regex
2126 kyunajusteSPICED
kata
385 kyuxiaolangganxiaolanggan
SQL 7 Kyu
1517 kyuadamszabolcsCodecool
Code Warez
3174 kyumonnersStack Exchange
Kata -Ruby
5145 kyuvpupkinSingleton
Filtering
50256 kyujuansgaitanApify
oo php
217 kyumickyfreeRick James
Challenges
7166 kyupbrignetiBelgrave
to-do
2146 kyuakash_011Andela
SQL_Challenges
1016 kyupbrignetiBelgrave
regEx
8176 kyuMRQQ
more practice
396 kyuvictorlooALPHA Camp
filter
276 kyuMRQQ
ToDos
41295 kyuMarcusS
To do
2127 kyumboeddekerAppgewaltig
ToDo
10265 kyuk2coderNinja
#1
295 kyuSkrety
Algorithms
375 kyusbakhtBloomingdale's
Intermediate
10246 kyuGavinStarkThe Iron Yard
ToDo List
16163 kyuDehelFnac (A3IS - Bluesoft Group)
SQL 8 Kyu
1618 kyuadamszabolcsCodecool
Mark
4116 kyucenzhenjieINSA Lyon
A
2104 kyukiripol
todo
4245 kyujakwenta
SQL
216 kyudeadzqKYK
Format
53256 kyujuansgaitanApify
Coding
3295 kyusamuli
NotSolved
2114 kyuhanes99gitconnected
String
3186 kyuxyolo@home
see?
3276 kyunotarium
Todo
5124 kyusparkusTeam-Gizmo
sql_8kyu
8358 kyujohnmkershawHOPE International School
curious
5263 kyudelucasWeCode
CCC Weekly Challenge
3245 kyuillbillyCallaway Cloud
8 Kyu
4187 kyuM-GaddIronhack
unsolved
275 kyuSoulxeonSouLabs