12 Days of Christmas
26th
99 Bottles of Beer
18th
Arrows
18th
Billiards
5th
Card Number Validation
9th
Christmas Trees
15th
Collatz
30th
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
38th
ISBN
10th
Leap Years
37th
ln 2
7th
Morse Decoder
7th
Morse Encoder
8th
Niven Numbers
38th
Ordinal Numbers
12th
Pangram Grep
15th
Pernicious Numbers
36th
Prime Numbers
36th
Prime Numbers (Long)
22nd
Repeating Decimals
2nd
Rock-paper-scissors-Spock-lizard
5th8th
ROT13
7th
Seven Segment
14th
Sudoku
3rd
Tic-tac-toe
6th
Tongue-twisters
13th
Trinomial Triangle
9th
United States
11th
π
11th
τ
8th
√2
9th