KataVault

These are the 398 code challenges I have completed sorted by category and kyu:

Fundamentals

6 kyu

Kata	Languages	Tags
+1 Array		Fundamentals, Arrays, Algorithms
Are they the "same"?		Fundamentals
Array.diff		Arrays, Fundamentals, Algorithms
Bouncing Balls		Puzzles, Algorithms, Mathematics
Break camelCase		Strings, Fundamentals
Build a pile of Cubes		Mathematics, Algorithms
Build Tower		Strings, ASCII Art, Fundamentals
Consecutive strings		Fundamentals
Consonant value		Strings, Fundamentals
Count characters in your string		Strings, Fundamentals
Count the smiley faces!		Regular Expressions, Fundamentals
Counting Duplicates		Strings, Fundamentals
Dashatize it		Strings, Arrays, Regular Expressions, Fundamentals
Data Reverse		Arrays, Fundamentals
Decipher this!		Strings, Arrays, Ciphers, Fundamentals
Delete occurrences of an element if it occurs more than n times		Lists, Fundamentals
Detect Pangram		Strings, Data Structures, Fundamentals
Duplicate Encoder		Strings, Arrays, Fundamentals
Encrypt this!		Fundamentals, Strings, Regular Expressions, Arrays, Ciphers, Algorithms, Cryptography, Security
Equal Sides Of An Array		Algorithms, Arrays, Fundamentals
Fibonacci, Tribonacci and friends		Arrays, Lists, Number Theory, Fundamentals
Find the odd int		Fundamentals
Find the unique number		Fundamentals, Algorithms, Arrays, Performance
Give me a Diamond		Strings, ASCII Art, Fundamentals
Help the bookseller !		Fundamentals, Algorithms
Highest Rank Number in an Array		Arrays, Fundamentals
Highest Scoring Word		Fundamentals, Strings, Arrays
If you can read this...		Fundamentals
IPv4 to int32		Networks, Algorithms, Bits, Binary, Fundamentals
Kebabize		Fundamentals, Strings, Regular Expressions
Linked Lists - Length & Count		Linked Lists, Data Structures, Fundamentals
longest_palindrome		Fundamentals
Lottery Ticket		Fundamentals, Strings, Arrays
Maze Runner		Arrays, Fundamentals
Meeting		Fundamentals
Mexican Wave		Arrays, Strings, Fundamentals
Multiplication table		Arrays, Fundamentals
New Cashier Does Not Know About Space or Shift		Strings, Fundamentals
Persistent Bugger.		Fundamentals, Mathematics
Playing with digits		Fundamentals, Mathematics
Primorial Of a Number		Fundamentals, Arrays, Number Theory
Replace With Alphabet Position		Strings, Fundamentals
Reverse every other word in the string		Arrays, Fundamentals
Reverse or rotate?		Algorithms, Strings
Simple Encryption #1 - Alternating Split		Cryptography, Algorithms, Strings, Arrays, Fundamentals
Sort the odd		Fundamentals, Arrays, Sorting
Street Fighter 2 - Character Selection		Arrays, Lists, Fundamentals, Graph Theory
String transformer		Fundamentals
Take a Number And Sum Its Digits Raised To The Consecutive Powers And ....¡Eureka!!		Fundamentals, Mathematics
Take a Ten Minutes Walk		Arrays, Fundamentals
The Supermarket Queue		Arrays, Fundamentals
The Vowel Code		Arrays, Strings, Regular Expressions, Fundamentals
Title Case		Strings, Fundamentals
Tortoise racing		Fundamentals, Mathematics, Algorithms
Transform To Prime		Fundamentals, Arrays
Tribonacci Sequence		Number Theory, Arrays, Lists, Fundamentals
Two Sum		Arrays, Fundamentals, Algorithms
Unique In Order		Algorithms, Fundamentals
Who likes it?		Strings, Fundamentals
Word a10n (abbreviation)		Strings, Fundamentals
Write Number in Expanded Form		Strings, Mathematics, Algorithms, Fundamentals
Your order, please		Strings, Fundamentals

8 kyu

Kata	Languages	Tags
5 without numbers !!		Restricted, Fundamentals, Puzzles
A Needle in the Haystack		Arrays, Fundamentals
A wolf in sheep's clothing		Fundamentals, Arrays
Abbreviate a Two Word Name		Strings, Fundamentals
Add Length		Arrays, Lists, Fundamentals
Age Range Compatibility Equation		Fundamentals
Alan Partridge II - Apple Turnover		Fundamentals, Strings, Mathematics
All Star Code Challenge #18		Fundamentals, Strings
altERnaTIng cAsE <=> ALTerNAtiNG CaSe		Fundamentals
Are arrow functions odd?		Fundamentals
Are You Playing Banjo?		Strings, Fundamentals
Area of a Square		Fundamentals, Mathematics, Geometry
Area or Perimeter		Fundamentals, Mathematics, Geometry
ASCII Total		Fundamentals
Basic Mathematical Operations		Mathematics, Fundamentals
Basic subclasses - Adam and Eve		Fundamentals, Object-oriented Programming
Basic Training: Add item to an Array		Arrays, Fundamentals
Beginner - Lost Without a Map		Fundamentals, Arrays
Beginner - Reduce but Grow		Fundamentals, Arrays
Beginner Series #1 School Paperwork		Fundamentals
Beginner Series #2 Clock		Fundamentals
Beginner Series #4 Cockroach		Fundamentals
Bin to Decimal		Binary, Fundamentals
Calculate average		Fundamentals, Arrays
Cat years, Dog years		Fundamentals
Century From Year		Fundamentals, Mathematics
Check same case		Fundamentals
Classy Classes		Fundamentals, Object-oriented Programming
Color Ghost		Object-oriented Programming, Fundamentals
Convert a Boolean to a String		Strings, Fundamentals
Convert a Number to a String!		Strings, Fundamentals
Convert a String to a Number!		Parsing, Strings, Fundamentals
Convert a string to an array		Arrays, Strings, Fundamentals
Convert boolean values to strings 'Yes' or 'No'.		Fundamentals
Convert number to reversed array of digits		Arrays, Fundamentals
Convert to Binary		Mathematics, Algorithms, Fundamentals
Correct the mistakes of the character recognition software		Fundamentals, Strings
Count by X		Arrays, Fundamentals
Count of positives / sum of negatives		Fundamentals, Arrays, Lists
Counting sheep...		Arrays, Fundamentals
CSV representation of array		Fundamentals, Arrays, Strings
Determine offspring sex based on genes XX and XY chromosomes		Fundamentals
Difference of Volumes of Cuboids		Fundamentals
DNA to RNA Conversion		Fundamentals, Strings
Do you speak "English"?		Fundamentals
Double Char		Fundamentals, Strings
Duck Duck Goose		Arrays, Lists, Fundamentals
Enumerable Magic #25 - Take the First N Elements		Fundamentals
Enumerable Magic - Does My List Include This?		Fundamentals
ES6 string addition		Strings, Fundamentals
Even or Odd		Mathematics, Fundamentals
Exclamation marks series #11: Replace all vowel to exclamation mark in the sentence		Fundamentals
Exclamation marks series #1: Remove an exclamation mark from the end of string		Fundamentals, Strings
Exclamation marks series #2: Remove all exclamation marks from the end of sentence		Fundamentals
Exclamation marks series #4: Remove all exclamation marks from sentence but ensure a exclamation mark at the end of string		Fundamentals
Exclamation marks series #6: Remove n exclamation marks in the sentence from left to right		Fundamentals
Exclusive "or" (xor) Logical Operator		Fundamentals
Fake Binary		Fundamentals, Strings, Arrays
Filter out the geese		Arrays, Fundamentals
Find Maximum and Minimum Values of a List		Fundamentals
Find Multiples of a Number		Fundamentals, Arrays
Find Nearest square number		Fundamentals, Mathematics
Find out whether the shape is a cube		Fundamentals
Find the first non-consecutive number		Arrays, Fundamentals
Find the position!		Fundamentals
Find the Remainder		Mathematics, Fundamentals
Find the Slope		Mathematics, Fundamentals, Algebra
Find the smallest integer in the array		Fundamentals
Fix your code before the garden dies!		Fundamentals, Debugging
Function 2 - squaring an argument		Fundamentals
Geometry Basics: Distance between points in 2D		Geometry, Fundamentals
get ascii value of character		Fundamentals
get character from ASCII Value		Fundamentals
Get number from string		Strings, Regular Expressions, Fundamentals
Grasshopper - Array Mean		Arrays, Lists, Fundamentals
Grasshopper - Basic Function Fixer		Fundamentals
Grasshopper - Check for factor		Mathematics, Fundamentals
Grasshopper - Combine strings		Fundamentals
Grasshopper - Function syntax debugging		Fundamentals
Grasshopper - Messi goals function		Fundamentals
Grasshopper - Personalized Message		Fundamentals, Strings
Grasshopper - Summation		Fundamentals, Mathematics
Grasshopper - Terminal game combat function		Fundamentals
Grasshopper - Terminal game move function		Fundamentals
Hello, Name or World!		Fundamentals
Hex to Decimal		Fundamentals
How good are you really?		Fundamentals
How many lightsabers do you own?		Fundamentals
How old will I be in 2099?		Fundamentals
If you can't sleep, just count sheep!!		Fundamentals, Strings
Invert values		Lists, Fundamentals, Arrays
Is he gonna survive?		Fundamentals
Is it a number?		Fundamentals
Is it even?		Fundamentals
Is the string uppercase?		Fundamentals, Strings
Is there a vowel in there?		Fundamentals, Strings, Arrays
Kata Example Twist		Fundamentals
Keep Hydrated!		Algorithms, Mathematics, Fundamentals
Keep up the hoop		Fundamentals
L1: Set Alarm		Fundamentals, Logic
Lario and Muigi Pipe Problem		Lists, Fundamentals
Leonardo Dicaprio and Oscars		Fundamentals
MakeUpperCase		Fundamentals, Strings
Merge two sorted arrays into one		Fundamentals, Arrays
Multiple of index		Fundamentals, Arrays
Multiplication table for number		Fundamentals, Strings
N-th Power		Fundamentals, Arrays
Name on billboard		Fundamentals, Restricted, Strings
Name Shuffler		Strings, Fundamentals
No zeros for heros		Fundamentals
OOP: Object Oriented Piracy		Object-oriented Programming, Fundamentals
Opposite number		Fundamentals
Opposites Attract		Fundamentals
Parse float		Fundamentals
Parse nice int from char problem		Fundamentals
pick a set of first elements		Arrays, Fundamentals
Plural		Fundamentals
Power		Restricted
Powers of 2		Mathematics, Fundamentals
Price of Mangoes		Fundamentals
Printing Array elements with Comma delimiters		Arrays, Fundamentals
Pythagorean Triple		Algebra, Mathematics, Fundamentals
Quarter of the year		Fundamentals, Mathematics
Regex count lowercase letters		Fundamentals, Regular Expressions, Algorithms
Regexp Basics - is it a digit?		Regular Expressions, Fundamentals
Regular Ball Super Ball		Fundamentals
Remove duplicates from list		Fundamentals, Arrays, Lists
Remove exclamation marks		Fundamentals, Strings
Remove First and Last Character		Strings, Fundamentals
Remove First and Last Character Part Two		Fundamentals, Arrays, Strings
Remove String Spaces		Fundamentals, Strings
Remove the time		Date Time, Parsing, Fundamentals
Removing Elements		Lists, Arrays, Fundamentals
Return Negative		Fundamentals
Return the day		Fundamentals
Returning Strings		Strings, Fundamentals
Reverse List Order		Lists, Fundamentals
Reversed sequence		Fundamentals
Reversed Strings		Strings, Fundamentals
Reversing Words in a String		Fundamentals, Strings
Sentence Smash		Strings, Arrays, Fundamentals
simple calculator		Fundamentals
Simple multiplication		Fundamentals
Simple validation of a username with regex		Regular Expressions, Fundamentals
Sort and Star		Fundamentals, Strings, Arrays, Sorting
Square(n) Sum		Arrays, Lists, Fundamentals
String cleaning		Regular Expressions, Fundamentals, Strings
String repeat		Fundamentals, Strings
Student's Final Grade		Fundamentals
Sum Arrays		Arrays, Fundamentals
Sum Mixed Array		Fundamentals, Strings, Arrays
Sum of differences in array		Arrays, Fundamentals
Sum of Multiples		Fundamentals
Sum of positive		Arrays, Fundamentals
Sum The Strings		Fundamentals
Sum without highest and lowest number		Fundamentals
Super Duper Easy		Fundamentals
Surface Area and Volume of a Box		Geometry, Fundamentals
Switch it Up!		Fundamentals
Take the Derivative		Fundamentals
Template Strings		Strings, Fundamentals
The 'if' function		Functional Programming, Fundamentals
The Feast of Many Beasts		Strings, Fundamentals
The Wide-Mouthed frog!		Strings, Logic, Fundamentals
Thinkful - Logic Drills: Traffic light		Fundamentals
Third Angle of a Triangle		Fundamentals
Total amount of points		Fundamentals, Arrays, Strings
Training JS #5: Basic data types--Object		Fundamentals, Tutorials
Transportation on vacation		Fundamentals
Type of sum		Fundamentals
UEFA EURO 2016		Strings, Arrays, Fundamentals
USD => CNY		Fundamentals
validate code with simple regex		Regular Expressions, Fundamentals
Volume of a Cuboid		Geometry, Fundamentals, Mathematics
Welcome to the City		Strings, Fundamentals
Welcome!		Fundamentals
What is between?		Fundamentals, Algorithms
What's the real floor?		Fundamentals
Will you make it?		Mathematics, Fundamentals
You Can't Code Under Pressure #1		Fundamentals
You only need one - Beginner		Fundamentals, Strings, Arrays

7 kyu

Kata	Languages	Tags
All Inclusive?		Fundamentals, Strings
Alphabet symmetry		Strings, Fundamentals
Alphabet war		Fundamentals, Strings
Alternate capitalization		Strings, Fundamentals
Alternate case		Fundamentals
Anagram Detection		Strings, Fundamentals
Array Leaders (Array Series #3)		Fundamentals, Arrays
Automorphic Number (Special Numbers Series #6)		Fundamentals, Mathematics
Basic Calculator		Fundamentals
Basic Sequence Practice		Fundamentals
Beginner Series #3 Sum of Numbers		Fundamentals, Algorithms
Binary Addition		Binary, Fundamentals
Build a square		Fundamentals, ASCII Art
Building blocks		Object-oriented Programming, Fundamentals
Bumps in the Road		Fundamentals, Strings
Cat and Mouse - Easy Version		Fundamentals, Strings
Categorize New Member		Fundamentals
Char Code Calculation		Fundamentals, Arrays, Strings, Mathematics
Check the exam		Fundamentals, Arrays
Complementary DNA		Strings, Fundamentals
Convert an array of strings to array of numbers		Arrays, Parsing, Strings, Fundamentals
Count the Digit		Fundamentals
Count the divisors of a number		Number Theory, Mathematics, Fundamentals
Currying functions: multiply all elements in an array		Functional Programming, Fundamentals
Descending Order		Fundamentals
Digits explosion		Strings, Regular Expressions, Fundamentals
Disemvowel Trolls		Strings, Regular Expressions, Fundamentals
Divide and Conquer		Fundamentals, Strings, Arrays
esreveR		Functional Programming, Fundamentals
Even numbers in an array		Fundamentals, Arrays
Exes and Ohs		Fundamentals
Factorial		Fundamentals
Factorial		Algorithms, Fundamentals
Filter the number		Strings, Fundamentals
Find the capitals		Strings, Arrays, Fundamentals
Find the middle element		Arrays, Fundamentals
Find the next perfect square!		Algebra, Fundamentals
Find the nth Digit of a Number		Fundamentals
Find the stray number		Fundamentals, Algorithms
Find the vowels		Fundamentals
Fix string case		Fundamentals
Flatten and sort an array		Arrays, Sorting, Fundamentals
Form The Minimum		Fundamentals
Friend or Foe?		Fundamentals
Functional Addition		Functional Programming, Fundamentals
Get the Middle Character		Fundamentals, Strings
Greet Me		Strings, Fundamentals
Growth of a Population		Fundamentals
Help the Fruit Guy		Arrays, Strings, Fundamentals
Highest and Lowest		Fundamentals, Strings
Holiday III - Fire on the boat		Fundamentals, Arrays, Strings
Incrementer		Fundamentals
Is this a triangle?		Mathematics, Fundamentals
Isograms		Strings, Fundamentals
Jaden Casing Strings		Strings, Fundamentals
JavaScript Array Filter		Arrays, Fundamentals
Largest pair sum in array		Fundamentals
Last Survivor		Fundamentals, Arrays
List Filtering		Lists, Filtering, Data Structures, Fundamentals
Love vs friendship		Fundamentals
Make a function that does arithmetic!		Fundamentals
max diff - easy		Mathematics, Lists, Arrays, Fundamentals
Maximum Length Difference		Fundamentals
Maximum Product		Fundamentals, Arrays
Maximum Triplet Sum (Array Series #7)		Fundamentals, Arrays
Minimize Sum Of Array (Array Series #1)		Fundamentals, Arrays
Money, Money, Money		Fundamentals
Most digits		Strings, Fundamentals
Moves in squared strings (I)		Fundamentals, Algorithms, Strings
Mumbling		Fundamentals, Strings, Puzzles
No oddities here		Arrays, Fundamentals
Number of Decimal Digits		Strings, Fundamentals
Number of People in the Bus		Fundamentals
Odd or Even?		Fundamentals, Arrays
Odd-Even String Sort		Strings, Fundamentals, Sorting
Ones and Zeros		Fundamentals, Arrays
Ordered Count of Characters		Fundamentals
Over The Road		Fundamentals, Mathematics, Performance
Parts of a list		Arrays, Lists, Data Structures, Algorithms
Power of two		Mathematics, Algorithms, Fundamentals
Predict your age!		Fundamentals
Printer Errors		Fundamentals
Product Of Maximums Of Array (Array Series #2)		Fundamentals, Arrays
Regex validate PIN code		Regular Expressions, Fundamentals
Remove anchor from URL		Regular Expressions, Strings, Fundamentals
Remove the minimum		Lists, Arrays, Fundamentals
Return the first M multiples of N		Mathematics, Fundamentals
Reverse words		Strings, Fundamentals
Rotate for a Max		Algorithms
Round up to the next multiple of 5		Fundamentals
Row Weights		Fundamentals, Arrays
SevenAte9		Logic, Strings, Fundamentals
Shortest Word		Fundamentals
Simple beads count		Fundamentals
Simple consecutive pairs		Arrays, Fundamentals
Simple Fun #176: Reverse Letter		Fundamentals
Simple string characters		Fundamentals
Small enough? - Beginner		Fundamentals, Arrays
Smallest value of an array		Arrays, Fundamentals
Sort array by string length		Sorting, Arrays, Fundamentals
Sort arrays - 1		Sorting, Arrays, Fundamentals
Sort by Last Char		Fundamentals, Strings, Arrays, Sorting
Sort Numbers		Fundamentals
Sort Out The Men From Boys		Fundamentals, Algorithms, Sorting
Sort the Gift Code		Sorting, Strings, Fundamentals
Sorted? yes? no? how?		Arrays, Sorting, Fundamentals
Spacify		Fundamentals, Strings, Arrays
Special Number (Special Numbers Series #5)		Fundamentals, Mathematics
Speed Control		Fundamentals, Mathematics
Square Every Digit		Mathematics, Fundamentals
String ends with?		Strings, Fundamentals
Strong Number (Special Numbers Series #2)		Fundamentals, Mathematics
Substituting Variables Into Strings: Padded Numbers		Strings, Fundamentals
Sum of a sequence		Fundamentals, Algorithms, Mathematics
Sum of angles		Geometry, Fundamentals
Sum of Cubes		Fundamentals
Sum of Minimums!		Fundamentals, Arrays
Sum of numbers from 0 to N		Fundamentals
Sum of Odd Cubed Numbers		Fundamentals, Functional Programming, Arrays
Sum of the first nth term of Series		Fundamentals
Sum of Triangular Numbers		Mathematics, Fundamentals
Sum of two lowest positive integers		Arrays, Fundamentals
Summing a number's digits		Fundamentals
Switcheroo		Fundamentals, Strings
Testing 1-2-3		Arrays, Fundamentals
The Coupon Code		Date Time, Strings, Fundamentals
The highest profit wins!		Lists, Arrays, Fundamentals
The Office I - Outed		Fundamentals, Arrays
Tidy Number (Special Numbers Series #9)		Fundamentals, Arrays, Strings
Two fighters, one winner.		Games, Algorithms, Logic, Fundamentals
Two to One		Fundamentals
V A P O R C O D E		Fundamentals
Vowel Count		Strings, Fundamentals
Word values		Fundamentals
You're a square!		Fundamentals, Mathematics

5 kyu

Kata	Languages	Tags
Calculating with Functions		Functional Programming
Common Denominators		Fundamentals, Algorithms, Mathematics
Directions Reduction		Fundamentals
Extract the domain name from a URL		Parsing, Regular Expressions
Integers: Recreation One		Fundamentals, Algorithms
Maximum subarray sum		Algorithms, Lists, Dynamic Programming, Fundamentals, Performance
Primes in numbers		Fundamentals, Mathematics
Product of consecutive Fib numbers		Algorithms, Mathematics
Regex Password Validation		Regular Expressions, Fundamentals
Rot13		Ciphers, Fundamentals
String incrementer		Regular Expressions, Strings
Sum of Pairs		Memoization, Fundamentals, Performance
What's a Perfect Power anyway?		Mathematics, Fundamentals

4 kyu

Kata	Languages	Tags
Strings Mix		Fundamentals, Strings

Algorithms

3 kyu

Kata	Languages	Tags
Make a spiral		Algorithms, Arrays, Logic

5 kyu

Kata	Languages	Tags
Valid Parentheses		Algorithms

6 kyu

Kata	Languages	Tags
Bit Counting		Bits, Algorithms
Create Phone Number		Arrays, Strings, Regular Expressions, Algorithms
Is a number prime?		Mathematics, Algorithms

Bug fixes

8 kyu

Kata	Languages	Tags
Multiply		Debugging, Fundamentals