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List of Python Kata to Update

saudiGuy11 edited this page Sep 15, 2024 · 779 revisions
  • Python 3.8 List of kata stuck in Python 3.8. Should be prioritized so we can get rid of the older version. Note that updating to decorator syntax is not required.
  • Python 3.10 List of kata stuck in Python 3.10.
  • Update to decorator syntax List of kata not using the new decorator syntax.

NOTE: Simply remove the kata from the list after updating.

Python 3.8

This section lists kata that failed to update to Python 3.10 or 3.11 automatically.

  1. Create a one-liner FTP client with the ftplib
  2. Find Ends of Each Paths
  3. One Line Task: Zero Or One
  4. The Messenger's Oracle

Python 3.10

This section lists kata that failed to update to Python 3.11 from 3.10 automatically or was created with Python 3.10 after the attempt.

  1. Big Big Big Padovan Number
  2. Big Generalized Fibonacci numbers
  3. Byte me!
  4. Calculate k-th digit of π (Pi)
  5. Convergents of e
  6. Data mining #2
  7. Fabergé Easter Eggs crush test
  8. Fibonacci With a Broken Interpreter
  9. How many double digits?
  10. I said the word WOULD instead of WOULDN'T
  11. Last digits of N^2 == N
  12. Matrix Exponentiation
  13. Micro Optimization: Digit Sum
  14. Next smaller pronic
  15. Number Decoding
  16. Pack Some Chocolates
  17. Pandas Series 103: Filter Rows From DataFrames That Don't Satisfy Condition
  18. Perimeter of squares in a rectangle
  19. pipi Numbers!
  20. Planning a city quarantine
  21. Reverse a singly-linked list
  22. Shuffle It Up II
  23. Squares sequence
  24. Sum of all numbers with the same digits (performance edition)
  25. Sum of certain products II
  26. Time Is Money (number of operations)
  27. Validate FEN notation
  28. Web Polygons
  29. Wordle! Cheat bot

Test Framework

This section lists Python kata without @test.it in submission tests. This doesn't prevent Python 3.8 upgrade, but we'll be able to make the test framework behave less awkwardly if we can update all kata to the new syntax.

  1. [Code War] The Weapon Factory: Assembly Line
  2. #3 Matrices: Rearrange the matrix
  3. 2 Arrays 1 Sort
  4. 3-2-1 Fire!
  5. 3D Cellular Neighbourhood
  6. 3D Sudoku Builder (a.k.a. multisize skyscraper puzzle)
  7. 4 By 4 Skyscrapers
  8. 5x5 Nonogram Solver
  9. A Crazy Robot? Who's is behind the scenes to make that?
  10. A Python iterator for people scared of Exceptions.
  11. AD2070: Help Lorimar troubleshoot his robots-Search and Disable
  12. Adding words - Part I
  13. Adding words - Part II
  14. ADFGX Simplified
  15. AdFly Encoder and Decoder
  16. Airport Arrivals/Departures - #1
  17. Alex & snooker: points earned.
  18. Algebraic Lists
  19. Algorithm Fun: Find The Unknown Number - Part I
  20. All divisors of large numbers
  21. All Star Code Challenge #31
  22. All that is open must be closed...
  23. Alpha to Numeric and Numeric to Alpha
  24. An Introduction to DocTesting...
  25. Angle between two planes
  26. Answer the students' questions!
  27. Apparently-Modifying Strings
  28. Approximate Fractions
  29. Approximate solution of differential equation with Runge-Kutta 4
  30. Are they really equals ?
  31. Are the numbers in order?
  32. Are you available?
  33. Are you Geometric or Arithmetic? No, I´m both of them.
  34. Area of a Shape
  35. Arithmetic Expression Placeholders
  36. Arithmetic Sequence - find hidden
  37. Arithmetic Sequence!
  38. Array Hyperrectangularity
  39. Array Info
  40. Array reduction
  41. Array to HTML table
  42. ASCII Cipher
  43. ASCII Logo Basic
  44. ASCII85 Encoding & Decoding
  45. Assembling a Circular Genome (Shortest Common Superstring)
  46. Assorted Rectangular Pieces Puzzle
  47. Asyncio - The Beginning
  48. Author Disambiguation: a name is a Name!
  49. Author Disambiguation: Signatures worth it
  50. Author Disambiguation: to the point
  51. Averaging in an Infinite Array
  52. Avoid trillion years of calculations !!
  53. Bad Apples
  54. Bad Exception Handling
  55. Balance the parentheses
  56. Balanced parentheses string
  57. Base Conversion
  58. Base Reduction
  59. BasE91 encoding & decoding
  60. Basic Optimization - Collatz Sum Sequence
  61. Basic physics problem - Space -Kinematics
  62. Basic socket server
  63. Basic subclasses - Adam and Eve
  64. Batman Quotes
  65. Become The Ultimate Phychic
  66. Beggar Thy Neighbour
  67. Bernoulli numbers
  68. Berserk rater: CG Vs. Clang
  69. Bezier Curves
  70. Big Generalized Fibonacci numbers
  71. Binary Range Extraction
  72. Binary search tree validation
  73. Binary Search Trees
  74. Binary Simulation
  75. Binary Tree Compare
  76. Binding of Algebraic Data Types
  77. Bingo Card
  78. Bishop Movement checker
  79. Blaine is a pain
  80. Blobservation
  81. Bloxorz Solver
  82. Boolean array generator
  83. Bowling score calculator
  84. Bracket Buster
  85. Brainfuck Translator
  86. Bridge Puzzle
  87. Bridge: SAYC Openings
  88. Build a Trie
  89. Building blocks
  90. Building Chains Using the Arithmetic Derivative of a Number
  91. Button sequences
  92. Cable Matching Problem
  93. Caeser Encryption
  94. Calculate daily accurate interest for a bank account
  95. Calculate the expression
  96. Calculating Expected Utility
  97. Call Center Call Backs
  98. Can these three numbers form a date?
  99. can you guess what it is ?
  100. Candy thieves
  101. Car Rental Business Needs Statistics and Programming
  102. Card-Chameleon, a Cipher with Playing Cards
  103. Carpet shop
  104. Cartesian neighbors distance
  105. Cartesian product
  106. Castle of Cubes
  107. Cat and Mouse - 2D Version
  108. Challenge Fun #17: Merge Arrays
  109. Chameleon unity
  110. Cheat at rock paper scissors!
  111. Check and Mate?
  112. Checkerboard King Combo Move
  113. Checkout Line Pricing
  114. Chess Fun #10: Chess Encryption
  115. Chess Fun #9: Bishops And Rooks
  116. Chess position parser (FEN)
  117. Children and candies
  118. Chocolate problem
  119. Choose featured projects for Gratipay's homepage!
  120. Circle area inside square
  121. Circular Limited Sums
  122. Clock Hands
  123. Clock Lock - Save the World, Time Traveler! :)
  124. Clone Graph
  125. Cockroach Bug Scatter
  126. Codenames - matrix conversions
  127. Codewars API
  128. Codwars or Codewars?
  129. Cody Block's Pro Skater
  130. Columnar Transposition Cipher Collisions
  131. Composed Integers Having Prime Factors Only Once
  132. Compound Nouns, Common Nouns, and Adjectives Test
  133. Computational Geometry #1: Mixing Paints
  134. Compute Nullable Non-Terminals
  135. Confidence Intervals
  136. Connect Four - placing tokens
  137. Consecutive Digit Constraints
  138. Construct Graph Class (simple)
  139. Context manager decorator
  140. Continuation in arguments, part 1
  141. Convergents of e
  142. Convert between radians and degrees
  143. Convert integer to Whitespace format
  144. Convex hull area
  145. Conways game of life on a toroidal array
  146. Coordinates Validator
  147. Coping with NP-Hardness #1: 2-SAT
  148. Coping with NP-Hardness #2: Max Weight Independent Set of a Tree
  149. Coping with NP-Hardness #3: Finding the Minimum Hamiltonian Cycle
  150. Coping with NP-Hardness #4: 3-Recoloring
  151. Correct the date-string
  152. Count Connectivity Components
  153. Count the days!
  154. Count The Hits Adding Contiguous Powers!
  155. Countdown
  156. Counting Cuts
  157. Counting hexagons
  158. Courier 🚚
  159. Cracking the Vigenère cipher, step 1: determining key length
  160. Crane Operation
  161. Crazed Templating
  162. Create a one-liner FTP client with the ftplib
  163. Cricket Scores
  164. Crouching Distribution, Hidden Constant
  165. Custom Array Filters
  166. Custom Christmas Tree III: the center of leaves
  167. Cut me in Pieces but in The Way I Like
  168. Cut the cake
  169. Cycle Detection: Floyd's The Tortoise and the The Hare
  170. Cycle Detection: greedy algorithm
  171. D&D Character generator #1: attribute modifiers and spells
  172. D&D Character generator #2: psion power points
  173. D&D Character generator #3: carrying capacity
  174. Data mining #1
  175. Date Format Validation
  176. Deadlock Detection
  177. Debug the functions EASY
  178. Debugger
  179. Decimal to any Rational or Irrational Base Converter
  180. Decipher the sentence
  181. Decode the Morse code, advanced
  182. Decode the Morse code, for real
  183. Decompose a number
  184. Decreasing Numbers with N Digits
  185. Deficiently Abundant Perfect Amicable Numbers
  186. Democracy Representation
  187. denumerate string
  188. Department scheduler [simple]
  189. Derpcode Interpreter
  190. Design a Simple Automaton (Finite State Machine)
  191. Detecting Factions in Friend-Foe Networks
  192. Determine Results of Pole Vault Competition
  193. Devil's Sequence
  194. DevOps legacy roasting -> disco inferno -> burn baby burn
  195. Dice rolls threshold
  196. Diff That Poly!
  197. Diophantine Equation Solver
  198. Disease Spread
  199. Distance between two points
  200. Divide polynomial by polynomial
  201. Divisible by primes
  202. Divisor harmony
  203. Dobble
  204. Dobble: Identify the missing cards
  205. Dog recommendation system
  206. Dollar words
  207. Domino Tiling - 2 x N Board
  208. Domino Tiling - 3 x N Board
  209. Dota 2 Bots - Pudge's Meat Hook
  210. Double Even Magic Square
  211. Doubly Linked List
  212. Draw a Circle.
  213. Dropzone
  214. Dynamic Connectivity
  215. Easy Cyclist's Training
  216. Egg Drops
  217. Eight ways to iterate over table
  218. Elections: Weighted Average
  219. Elo rating - one game, one pair
  220. Email Address Obfuscator
  221. Endianness Conversion
  222. Endless String
  223. Enigeliisohe too Eniigeeliiisoohee Toroanisoliatooro
  224. Enumerable Magic #30 - Split that Array!
  225. Equivalent Dice
  226. Error Correction Codes
  227. Escape the Aliens
  228. Escape the maze
  229. Esolang Interpreters #1 - Introduction to Esolangs and My First Interpreter (MiniStringFuck)
  230. Esolang Interpreters #3 - Custom Paintf**k Interpreter
  231. Esolang: InfiniTick
  232. Esolang: Stick
  233. Esolang: Ticker
  234. Esoteric Language: 'Poohbear' Interpreter
  235. Euclidean distance in n dimensions
  236. Euler method for numerical integration
  237. Euler Squares
  238. Evil Autocorrect Prank
  239. Exact p
  240. Excel's COUNTIF, SUMIF and AVERAGEIF functions
  241. Exception Handling (with restrictions)
  242. Exclusive presentations
  243. Exercise in Summing
  244. Experimenting with a sequence of complex numbers
  245. Express number as sum of four squares
  246. Extended weekends
  247. Fabergé Easter Eggs crush test
  248. Family Relations
  249. Family Tree - Ancestors
  250. Fastest Code : Equal to 24
  251. Fat Fingers
  252. Features of a Given Array
  253. Feed Kahumolings!
  254. Fibo akin
  255. Fibonacci With a Broken Interpreter
  256. File Path Operations
  257. Fill in the gaps in my timesheet.
  258. Filtering Values For an Election
  259. Financing a purchase
  260. Find all possible number combos that sum to a number
  261. Find All The Unique Substrings
  262. Find amplitude of a binary tree
  263. Find Ends of Each Paths
  264. Find the Biggest Triangle
  265. Find the centre of a sphere
  266. Find the Counterfeit
  267. Find the files then read them
  268. Find the force of gravity between two objects
  269. Find the in-between point
  270. Find the lines!
  271. Find the Longest Increasing or Decreasing Combination in an Array
  272. Find the missed number
  273. Find the most adjacent integers of the same value in a grid
  274. Find the name of the lucky variable
  275. Find the Next Powers Higher than a Given Value With Given Constraints
  276. Find the random seed
  277. Find the sum of the roots of a quadratic equation
  278. Finding a Circulation
  279. Finish Guess the Number Game
  280. Finish NxN Array Tic-Tac-Toe Game
  281. First n Prime Numbers
  282. First-Class Function Factory
  283. Fix arithmetic progression
  284. Fix array sequence
  285. Fix the base conversion function!
  286. Fix the Bugs (Syntax) - My First Kata
  287. Fix the pipes
  288. Fix the robot and save the secret Mars base
  289. Fixed length palindromes
  290. Fixed-length integer partitions
  291. Fizz Buzz (with restrictions)
  292. Fizz Buzz Reloaded
  293. FizzBuzz++
  294. Flatten A Nested Dictionary That Contains Lists
  295. Float or Integer verifier
  296. Floating-point Approximation (III)
  297. Folding Tiles Solver
  298. Following the Paths of Numbers Through Prime Factorization
  299. Football Season
  300. Four Letter Words ~ Mutations
  301. Fractions class
  302. Fractions of a currency' smallest value
  303. Frogificator
  304. Fuel usage reporting
  305. Function Composition
  306. Function iteration
  307. Funnel Out A String
  308. Gambling Game: Choosing Order
  309. Game of Go
  310. Game of Thrones : Wildlings are coming!
  311. Generate Numbers From Digits #2
  312. Generic number class
  313. Geohashing
  314. Geometric Mean II
  315. Get Euchre Score
  316. Get recursion limit
  317. Get the Excel column title!
  318. Getting along with Bernoulli's numbers
  319. getting started #let's piay
  320. Getting the neighbors
  321. Give me data
  322. Gnomes and Hats: A Horror Story
  323. Golden Section Search
  324. GPS coordinate conversions - DD to DMS
  325. Grader
  326. Grid index
  327. Group prime numbers
  328. Grouped by commas
  329. Guess the (prime) number, digit by digit
  330. Guess the float #1
  331. Guess the list pattern #2
  332. Guess the list pattern #3
  333. Guess the list pattern #4
  334. Guess Who?
  335. guessing game server
  336. Gymbro's Unique Gym - Weight Calculator
  337. Hack the NSA
  338. Hackermann
  339. Hanoi Tower Array
  340. Happy Numbers. Another performance edition.
  341. Heartbeat Status Montor
  342. Help Green Lantern with his web site
  343. Help Mr. E
  344. Help Suzuki pack his coal basket!
  345. Helpers For a 3DGame I: Biggest Triangle in a Sphere
  346. Heroes of Might & Magic II: Chain Lightning
  347. Hidden pixels
  348. Hide a message in a deck of playing cards
  349. High score table
  350. Hofstadter Q
  351. How far away is it ?
  352. How good are you really?
  353. How long each order will take
  354. How many dots are covered
  355. How many eggs?
  356. How many feelings?
  357. HTML Complementary Color
  358. HTML Element Generator
  359. Hungarian Cardinal Numerals
  360. Hungarian Vowel Harmony (harder)
  361. Hypercube Lists
  362. I Liked the SQL Better...
  363. I'm already Tracer
  364. Image host filename generator
  365. Image Processing: Gaussian Blurring
  366. Imaginary Base Conversion
  367. Imperfect Fibonacci Rabbits
  368. Implement Classes by using Functions
  369. Implementing SHA-1
  370. Inertial Array
  371. Infinite continued fractions
  372. Insane Circular Limited Sums
  373. Insane Increasing or Decreasing Numbers
  374. Insane Tri-Bicolor Tiling
  375. Integer factorization: CFRAC basics
  376. Integer to string deciphering
  377. Integer triangles
  378. Integer Triangles I: Maximum Number of Integer Triangles with the Smallest Perimeter
  379. Interlaced Spiral Cipher
  380. Intro to Statistics - Part 1: A Five figure summary
  381. Intro to Statistics - Part 2: Boxplots
  382. Intro to Statistics - Part 3: Correlation Coefficients
  383. IntroToArt
  384. intTunes
  385. IPv4 Parser
  386. IRR Calculation - evaluation of profitability
  387. Is it a group? (Group theory, Abstract algebra)
  388. Is there a sequence re-occuring in the list
  389. Is this a good batch of stout? (Student's t test)
  390. Is this event within this time?
  391. Isogram Cipher
  392. Iterative Rotation Cipher
  393. Jacob's Weight Loss Program
  394. Javascript filter - 1
  395. Jimmy's Journey
  396. Job Matching #2
  397. Jobs
  398. Johnny the Poker Player - What is my equity?
  399. Joyful Transpiler
  400. Jumble words
  401. Jungerstein's Math Training Room: 4. O Pascal tree, how green are your leaves?
  402. Jungerstein's Math Training Room: 5. Cat back
  403. Kata 2019: Bonus Game I
  404. Kata 2019: Bonus Game II
  405. Kata Impossible I - The Impossible Lottery
  406. KISS - Keep It Simple Stupid
  407. Knapsack problem - the max value with the lists of elements
  408. Krazy King Blackjack
  409. Largest Numeric Palindrome
  410. Largest Power that Divides a Large Factorial
  411. Largest prime number containing n digit
  412. Last
  413. Last digits of N^2 == N
  414. Latin Squares
  415. Lattice Paths, But...?
  416. Lazily executing a function
  417. Lazy Init
  418. Leaderboard climbers
  419. Learning Remote Control
  420. Left$ and Right$
  421. Length Factorial Encryption
  422. Let's Play Darts: Beat The Power!
  423. Letterss of Natac
  424. Letterss of natac: build or buy
  425. Level Up!
  426. Lexographic sort with a twist
  427. Linked Lists - Front Back Split
  428. Linked Lists - Remove Duplicates
  429. Linked Lists - Shuffle Merge
  430. Linked Lists - Sorted Merge
  431. Linux history and ! command. Series#3 The !-n command
  432. Linux history and ! command. Series#4 The !string command
  433. Linux history and ! command. Series#5 The !?string command
  434. List of pairs instead of dictionary
  435. Little PL/SQL parser - get text literals
  436. Logic Detective
  437. Longest Consecutive Sequence of Squares
  438. Longest Palindromic Substring (Linear)
  439. Longest Strict Bouncy Subarray
  440. Looper
  441. Loose Change (Part 2)
  442. Ludic numbers
  443. Magic Zeckendorf
  444. Magritte - Golconda
  445. Mahjong - #1 Pure Hand
  446. Make a spiral
  447. Making Copies
  448. Manage the Robot Factory: Day 1
  449. Markings to White Triangles and How to Find Them
  450. Master your primes: sieve with memoization
  451. Mastermind
  452. matrix expanding
  453. Matrix Exponentiation
  454. Max Collatz Sequence Length
  455. Max number of people and year in a specific place
  456. Maximum 2d subarray sum
  457. Maximum and Minimum Numbers as a Result of all Possible Concatenations and Fulfilling Certain Constraints
  458. Maximum Area in Histogram
  459. Maximum Overkill
  460. Maze Exit
  461. Mean without outliers
  462. Memoized Log Cutting
  463. Message from Alien (Easy Version)
  464. Midpoint Sum
  465. Minesweeper
  466. Minimal Cost Binary Search Trees
  467. Minimal Squarewave PCM Synthesizer
  468. Minimum exact p
  469. Minimum number of taxis
  470. Minimum path in squares
  471. Minimum Ticket Cost
  472. Minimum Transactions
  473. Minimum unfairness of a list/array
  474. Mistaking a forest for a tree
  475. Molecule to atoms
  476. Mongodb ObjectID
  477. MONTE CARLO 3D
  478. Morse Encoding
  479. Most common first
  480. Most improved - Puzzles #4
  481. MTV Cribs
  482. Multi Poly Coordinates
  483. Multicast IP Address to MAC address mapping
  484. Multiply Two Numbers Without Integers
  485. Multiply without asterisk
  486. Multiplying Binomials
  487. Multirange iterator
  488. Multisize Nonogram Solver
  489. Musical Scales and Modes
  490. My smallest code interpreter (aka Brainf**k)
  491. My Very Own Python's Split Function
  492. Mysterious Letters
  493. N Linear
  494. n times 2 to the power of x without function or class method and return
  495. n-Bonacci Ratio
  496. N-centered Array
  497. N-Dimensional Vector Magnitude
  498. N00bify - English to n00b Translator
  499. Nearly Flatten a Messy Array
  500. Nerdle - The General Version
  501. New season, new league
  502. Next Higher Value # 1
  503. Next level string padding
  504. NIM the game
  505. No adjacent integers sequence generator
  506. No arithmetic progressions
  507. No musical :(
  508. No unknown variables!
  509. Northwest and Southeast corners
  510. nova polynomial 5. from roots
  511. Now that's a crib!
  512. Number Decoding
  513. Number of Digit d in m-based Number Converted to Base n
  514. Numbers Having Digits Occurring Only Once
  515. Numbers with Collatz Starting Patterns
  516. Nut Farm
  517. Nut Farm 2
  518. OCR Numbers
  519. Odd-squares traversal
  520. Odder than the rest
  521. Odder than the rest - 2
  522. Old Mobile Display
  523. One for His Nob: Scoring Cribbage Hands
  524. One Line Task: Diamond Creator Pro
  525. One line task: Is the King in check ?
  526. One Line Task: Palindrome String
  527. Only-Readable-Once list
  528. Operation Transformation
  529. Operator Insertion
  530. Optimal Taxi Fare
  531. Optimized Pathfinding Algorithm
  532. Oracle: Coin Method
  533. Ordering Beers in Poland
  534. Ordinal Numbers
  535. Packet Delivery -- Enforcing Constraints
  536. packing rectangles
  537. Palindrome integer composition
  538. Palindromic Expression
  539. Palindromization
  540. Pandigital Sequence
  541. Paperboy 2
  542. Papers, Please
  543. Parametric to Rectangular Equation
  544. Parentheses are loud !
  545. Parse bank account number
  546. Parse python terminal output
  547. Parse the log
  548. Partial Word Searching
  549. Password generator
  550. Password validator
  551. Path Finder #4: where are you?
  552. Perimeter Sum
  553. Permutation-free Strings
  554. Personalized brand list
  555. Physics - Mechanics - Atwood Machines in Series
  556. Pi approximation fractions
  557. Picking the best casino game
  558. Pig Sursurunga
  559. Pitches and Notes
  560. Plotting points on a grid.
  561. Pointless Farmer
  562. Points in the circle
  563. Points On A Line
  564. Polydivisible Numbers
  565. Polynomial Evaluation - Binomial Form
  566. Posix command
  567. Possibilities of throwing a coin n times
  568. Possible Triangles Formed with Available Iron Rods
  569. Power Laws
  570. Power tower modulo m
  571. Precise fractions pt. 1 - basics
  572. Prefill an Array
  573. Prime Ant - Crazy Version
  574. Prime factorization
  575. Prime number decompositions
  576. Principal Diagonal | VS | Secondary Diagonal
  577. Printing Array elements with Comma delimiters
  578. PRNG: Linear Congruential Generator
  579. Probabilities for Sums in Rolling Cubic Dice
  580. Probable Prime or Composite (Much bigger primes)
  581. Process Waterfowl Survey Data Results
  582. Processes
  583. Product Partitions II
  584. Program hangs!
  585. Progress of a challenge
  586. Progressive Spiral Number Branch
  587. Progressive Spiral Number Distance
  588. Progressive Spiral Number Position
  589. Projectile Motion
  590. Promenade Fractions (from BIO 2016)
  591. Propositional SAT Problem
  592. Propositional SAT Problem [Performance]
  593. Pythagorean Triplets
  594. Python's Dynamic Classes #1
  595. Python's Dynamic Classes #2
  596. Python's Dynamic Classes #3
  597. Quadratic Enumerator
  598. Quest: Kill ten rats!
  599. Queue Battle
  600. Radical Simplifier
  601. Radix Tree
  602. Ragbaby cipher
  603. Random Integers
  604. Range Extractor
  605. Range of Integers in an Unsorted String
  606. Range Parser
  607. Ranking Poker Hands
  608. Rational Zeros
  609. RDS (Radio Data System) Splash Text Concatenation
  610. Read a UPC/Barcode
  611. Read a UPC/Barcode Part 2
  612. Read the time
  613. Readability is King
  614. Recaman Sequence
  615. Recover a secret string from random triplets
  616. Recovering from a Disk Crash - Reverse Engineering Some Lost Code!
  617. Rectangle Cipher Puzzle
  618. Rectangular Subsets of Tiles in Square Grids (Fixed)
  619. Recursion puzzle
  620. Regex for a decimal number divisible by 4
  621. Regex for Gregorian date validation
  622. Regex to Match Significant Figures
  623. Regexp basics - parsing mana cost
  624. RegExp Fun #1 - When I miss few days of gym
  625. Regular expression for binary numbers divisible by 5
  626. Regular Expressions (groups): Splitting phone numbers into their separate parts.
  627. Relatively Prime Numbers
  628. Remember members decorator
  629. Retirement Planning as a Service
  630. Reverse a singly-linked list
  631. Reverse Inside Parentheses (Inside Parentheses)
  632. Reverse polish notation calculator
  633. Reverse Polish Notation solver (Easy)
  634. Reversi row rudiments
  635. riemann sums II (trapezoidal rule)
  636. Right Truncatable Harshad numbers
  637. RoboScript #2 - Implement the RS1 Specification
  638. RoboScript #3 - Implement the RS2 Specification
  639. RoboScript #4 - RS3 Patterns to the Rescue
  640. Roman numerals, Zeroes and Fractions
  641. ROT13 variant cipher
  642. Rotate Array (JS)
  643. Rotate Corners
  644. Rotated string
  645. Rotational energy levels
  646. Rotational state populations (the Boltzmann distribution)
  647. Rotten Oranges
  648. Round by 0.5 steps
  649. RPG dice roller
  650. RPS Knockout Tournament Winner
  651. Rubiks cube CFOP algo : Cross
  652. Rudimentary Pivot Table
  653. Rule 30
  654. Russian Peasant Multiplication
  655. Sales report
  656. Same Birthday Probability
  657. Sat Nav directions
  658. Save for retirement
  659. Schedulability Test
  660. School Class Arrangement
  661. Scraping: Get the Year a CodeWarrior Joined
  662. Searching for Bulls
  663. Seat Allocation Double Dutch
  664. Secret Agent Time Travel Calculations
  665. Secret knock
  666. Selective memory
  667. Self-closing Cookie Jar
  668. Semi-Thue Systems - The Word Problem [Part 1]
  669. Sentence to words
  670. Separate filename from extension
  671. Sequence generator
  672. Set Closure Generator
  673. Seventh JSON of a seventh JSON
  674. Shakespearean Tug of War
  675. Shallowest path across the river
  676. Shelve your trophies
  677. Shifted cycles
  678. Shorten IPv6 Address
  679. Shortest string
  680. Shortest string that contains all possible bigrams from set of characters
  681. Sierpinski triangle
  682. Simple Barcode Scanner
  683. Simple elevator
  684. Simple Encryption #2 - Index-Difference
  685. Simple Encryption #4 - Qwerty
  686. Simple Events
  687. Simple eviternity numbers
  688. Simple Finite State Machine Compiler
  689. Simple Fun #134: Fix Progression
  690. Simple Fun #139: Black And White
  691. Simple Fun #148: Exchange Sort
  692. Simple Fun #149: Next Day Of Week
  693. Simple Fun #150: Robot Transfer
  694. Simple Fun #153: Knight Rescue
  695. Simple Fun #167: Spreadsheet
  696. Simple Fun #170: Sum Groups
  697. Simple Fun #178: Faulty Odometer
  698. Simple Fun #188: Slogans
  699. Simple Fun #190: Folding Paper
  700. Simple Fun #201: Cards And Pero
  701. Simple Fun #26: Weak Numbers
  702. Simple Fun #283: Censor The Forbidden Words
  703. Simple Fun #299: Look And Say And Sum
  704. Simple Fun #335: Two Programmers And Gold
  705. Simple Fun #342: Buy Newspaper
  706. Simple Fun #387: Lonely Frog IV
  707. Simple Fun #55: Cyclic String
  708. Simple Fun #62: Draw Rectangle
  709. Simple Fun #89: Boxes Packing
  710. Simple Interactive Interpreter
  711. Simple max digit sum
  712. Simple maze
  713. Simple non-decreasing array
  714. Simple number divisibility
  715. Simple number triangle
  716. Simple palindrome game
  717. Simple parenthesis removal
  718. Simple Pig Latin
  719. Simple repeated words
  720. Simple Socket Client
  721. Simple string matching
  722. Simple Substitution Cipher Helper
  723. Simple Sum (with restrictions)
  724. Simple Web Framework #1: Create a basic router
  725. Simpler Interactive Interpreter
  726. Simplexer
  727. Simplifying multilinear polynomials
  728. Simulating Collective Behaviour with Linear Threshold Model
  729. Simultaneous Equations - Three Variables
  730. Single Word Pig Latin
  731. Sir , showMe yourID
  732. Slamming Lockers
  733. Sleigh Authentication
  734. So Easy: Charge time calculation
  735. So many kinds of numbers!
  736. Social Golfer Problem Validator
  737. Social Golfer Problem Validator V2
  738. Socialist distribution
  739. socket guessing game client
  740. Solve the Grid! Binary Toggling Puzzle
  741. Some Circles
  742. Some Tips For Quality Control I
  743. Sophie Germain primes
  744. Sort a massive list of strings (hard)
  745. Sort only integers in Nested List
  746. Sort the comments!
  747. Sortable Poker Hands
  748. Sortable Shapes
  749. Sorting Integers into a nested list
  750. Sorting Poker
  751. Sorting Time
  752. Space Invaders Underdog
  753. Spanish class help
  754. Speed Control
  755. Spelling Bee II
  756. SPF Russia
  757. Spidey Swings Across Town
  758. Spinning Rings - Fidget Spinner Edition
  759. Split string by multiple delimiters
  760. Split Without Loss
  761. Splitting the Workload (part II)
  762. Sports league table - help your local team!
  763. Spot the Differences
  764. Spreadsheet Cell Name Conversions
  765. Spy Agent
  766. Spy games - rebuild your decoder
  767. Squad number generator
  768. Square sums (simple)
  769. Stack Arithmetic Machine
  770. Stacked Balls - 3D (square base)
  771. Stop the loop after n seconds
  772. Strange roman numbers
  773. Streaky Patterns in Coin Flips
  774. String character frequency
  775. String counting
  776. String Pyramid
  777. String searching with wildcard
  778. String Shortener (shrink)
  779. String subpattern recognition II
  780. String subpattern recognition III
  781. String to integer conversion
  782. Strip Url Params
  783. Sub-array division
  784. Subsequence Product Sum
  785. Subset Sum Problem
  786. Sudoku Solver
  787. Sum and Multiply
  788. Sum of certain products
  789. Sum of certain products II
  790. Sum of dices
  791. Summing subsets in list
  792. Sums of Perfect Squares
  793. Sungka
  794. Supernatural
  795. Swap items in a dictionary
  796. Swap Row In Certain Columns of a Matrix
  797. Symbolic differentiation of prefix expressions
  798. T.T.T.#2: Equal to 24
  799. Task master
  800. Temperature converter
  801. Terrible Exception Handling
  802. Tetris Series #2 — Primitive Gameplay
  803. Texas Hold'em Hands
  804. The Chakitra's language
  805. The cross-stitch Kata
  806. The Enigma Machine - Part 2: A Rotor
  807. The Enigma Machine - Part 3: The Reflector
  808. The Enigma Machine - Part 4: A Rotor Part II
  809. The most asked question on CodeWars
  810. The Seven Bridges of Königsberg
  811. Tic-Tac-Toe Checker
  812. Time For Validation
  813. Traffic lights
  814. Train of dominoes
  815. Triangulate a konvex polygon
  816. Tug-o'-War
  817. Twice Their Age
  818. Two Sets of Equal Sum
  819. Understanding epidemic.
  820. Unicode Math
  821. Vanilla Neural Network from scratch
  822. Vanity Plates
  823. Watchmaker problems - watch hands issue
  824. Where am I again?

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