12 Days of Christmas
24th
99 Bottles of Beer
19th
Arrows
7th
Billiards
4th
Card Number Validation
7th
Christmas Trees
13th
Collatz
29th
CSS Colors
7th
Day of Week
9th
Divisors
25th
Emojify
7th
Factorial Factorisation
8th
Fibonacci
89th
Fizz Buzz
56th
Foo Fizz Buzz Bar
17th
Forsyth–Edwards Notation
7th
Happy Numbers
36th
ISBN
8th
Leap Years
36th
ln 2
6th
Morse Decoder
5th
Morse Encoder
7th
Niven Numbers
36th
Ordinal Numbers
11th
Pangram Grep
14th
Pernicious Numbers
33rd
Prime Numbers
36th
Prime Numbers (Long)
22nd
Repeating Decimals
💎
Rock-paper-scissors-Spock-lizard
5th8th
ROT13
5th
Seven Segment
11th
Sudoku
3rd
Tic-tac-toe
5th
Tongue-twisters
13th
Trinomial Triangle
6th
United States
10th
π
10th
τ
7th
√2
8th