12 Days of Christmas
26th
99 Bottles of Beer
18th
Arrows
13th
Billiards
5th
Card Number Validation
9th
Christmas Trees
14th
Collatz
29th
CSS Colors
9th
Day of Week
9th
Divisors
26th
Emojify
8th
Factorial Factorisation
8th
Fibonacci
96th
Fizz Buzz
57th
Foo Fizz Buzz Bar
17th
Forsyth–Edwards Notation
7th
Happy Numbers
36th
ISBN
9th
Leap Years
37th
ln 2
7th
Morse Decoder
7th
Morse Encoder
8th
Niven Numbers
37th
Ordinal Numbers
12th
Pangram Grep
15th
Pernicious Numbers
35th
Prime Numbers
36th
Prime Numbers (Long)
23rd
Repeating Decimals
2nd
Rock-paper-scissors-Spock-lizard
5th9th
ROT13
6th
Seven Segment
13th
Sudoku
4th
Tic-tac-toe
6th
Tongue-twisters
13th
Trinomial Triangle
8th
United States
11th
π
11th
τ
8th
√2
9th