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
8th
Divisors
25th
Emojify
7th
Factorial Factorisation
7th
Fibonacci
88th
Fizz Buzz
56th
Foo Fizz Buzz Bar
16th
Forsyth–Edwards Notation
6th
Happy Numbers
35th
ISBN
8th
Leap Years
35th
ln 2
6th
Morse Decoder
5th
Morse Encoder
7th
Niven Numbers
35th
Ordinal Numbers
11th
Pangram Grep
14th
Pernicious Numbers
31st
Prime Numbers
35th
Prime Numbers (Long)
21st
Repeating Decimals
💎
Rock-paper-scissors-Spock-lizard
5th8th
ROT13
5th
Seven Segment
11th
Sudoku
3rd
Tic-tac-toe
5th
Tongue-twisters
12th
United States
10th
π
10th
τ
7th
√2
8th