Code Katas
Search / Filter solutions here
Episodes
Episode 064
Episode 063
Episode 062
- Count Odd Numbers below n - 8 kyu
- Find Count of Most Frequent Item in an Array - 7 kyu
- Help the bookseller ! - 6 kyu
- Josephus Survivor - 5 kyu
Episode 061
Episode 060
Episode 059
Episode 058
Episode 057
Episode 056
Episode 055
Episode 054
Episode 053
Episode 052
Episode 051
Episode 050
Episode 049
Episode 048
Episode 047
Episode 046
Episode 045
Episode 044
Episode 043
Episode 042
Episode 041
- Even or Odd - 8 kyu
- Opposite number - 8 kyu
- Sum of positive - 8 kyu
- Find the smallest integer in the array - 8 kyu
- Return Negative - 8 kyu
- Multiply - 8 kyu
- Vowel Count - 7 kyu
- Two Oldest Ages - 7 kyu
Episode 040
Episode 039
Episode 038
Episode 037
Episode 036
Episode 035b
Episode 035a
Episode 034b
Episode 034a
Episode 033
Episode 032b
Episode 032a
- My head is at the wrong end! - 8 kyu
- V A P O R C O D E - 7 kyu
- Tic-Tac-Toe-like table Generator - 6 kyu
Episode 031b
- Sort array by string length - 7 kyu
- Validate Credit Card Number - 6 kyu
- Longest Common Subsequence - 5 kyu
Episode 031a
Episode 030
Episode 029
- Playing with Sets : Sup/Sub - 7 kyu
- Count characters in your string - 6 kyu
- The Supermarket Queue - 6 kyu
- WeIrD StRiNg CaSe - 6 kyu
Episode 028
- The Poet And The Pendulum - 7 kyu
- New Cashier Does Not Know About Space or Shift - 6 kyu
- int32 to IPv4 - 5 kyu
Episode 027
- Basic Mathematical Operations - 8 kyu
- Convert a Number to a String! - 8 kyu
- Money, Money, Money - 7 kyu
- String ends with? - 7 kyu
- Valid Braces - 6 kyu
- WinH's Kata #2 - JavaScript Array-Parser - 5 kyu
Episode 026
Episode 025
Episode 024
- The highest profit wins! - 7 kyu
- IP Validation - 6 kyu
- Bowling score calculator - 5 kyu
- Simple Time Bomb - 5 kyu
Episode 023
Episode 022
- Regex validate PIN code - 7 kyu
- Delete occurrences of an element if it occurs more than n times - 6 kyu
- Tic-Tac-Toe Checker - 5 kyu
- Vector class - 5 kyu
Episode 021
Episode 020
Episode 019
- Sum of a sequence - 7 kyu
- Bouncing Balls - 6 kyu
- Most Consecutive Zeros of a Binary Number - 6 kyu
- Convert PascalCase string into snake_case - 5 kyu
- Find all possible number combos that sum to a number - 4 kyu
Episode 018
Episode 017
- Ones and Zeros - 7 kyu
- Square Every Digit - 7 kyu
- Exponential Comparison - 6 kyu
- Double Cola - 5 kyu
Episode 016
Episode 015
- Find the Capitals - 7 kyu
- Don't rely on luck. - 6 kyu
- The Hashtag Generator - 5 kyu
- Range Extraction - 4 kyu
Episode 014
Episode 013
- Printer Errors - 7 kyu
- Sum of the first nth term of Series - 7 kyu
- Find The Parity Outlier - 6 kyu
- First non-repeating character - 5 kyu
Episode 012
- Sum of odd numbers - 7 kyu
- Format a string of names like 'Bart, Lisa & Maggie'. - 6 kyu
- PaginationHelper - 5 kyu
Episode 011
Episode 010
Episode 009
- Correct the mistakes of the character recognition software - 8 kyu
- Does my number look big in this? - 6 kyu
- Regex Password Validation - 5 kyu
- Nesting Structure Comparison - 4 kyu
Episode 008
- Growth of a Population - 7 kyu
- Are they the "same"? - 6 kyu
- Your order, please - 6 kyu
- Rot13 - 5 kyu
- Twice linear - 4 kyu
Episode 007
- Categorize New Member - 7 kyu
- Isograms - 7 kyu
- Convert string to camel case - 6 kyu
- Multiples of 3 or 5 - 6 kyu
- RGB To Hex Conversion - 5 kyu
- Where my anagrams at? - 5 kyu
- Priori Incantatem - 4 kyu
Episode 006
- Beginner Series #3 Sum of Numbers - 7 kyu
- Dubstep - 6 kyu
- Find the odd int - 6 kyu
- Reverse polish notation calculator - 6 kyu
- Sum of Digits / Digital Root - 6 kyu
- Calculating with Functions - 5 kyu
- Moving Zeros To The End - 5 kyu
Episode 005
- Credit Card Mask - 7 kyu
- Palindrome chain length - 7 kyu
- Sum of two lowest positive integers - 7 kyu
- Create Phone Number - 6 kyu
- Equal Sides Of An Array - 6 kyu
- Roman Numerals Encoder - 6 kyu
Episode 004
- List Filtering - 7 kyu
- Count the smiley faces! - 6 kyu
- Human Readable Time - 5 kyu
- Maximum subarray sum - 5 kyu
- Scramblies - 5 kyu
- Sum Strings as Numbers - 4 kyu
Episode 003
- Complementary DNA - 7 kyu
- Vowel Count - 7 kyu
- IQ Test - 6 kyu
- Take a Ten Minute Walk - 6 kyu
- Simple Pig Latin - 5 kyu