List of Python Kata to Update

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