12 Days of Christmas
36th147th
99 Bottles of Beer
49th
Arabic to Roman
30th143rd
Arrows
22nd77th
Card Number Validation
20th
Christmas Trees
98th
CSS Colors
26th
Diamonds
39th106th
Evil Numbers
132nd
Fizz Buzz
291st888th
Hexdump
19th
ISBN
26th
Morse Encoder
34th
Niven Numbers
79th212th
Odious Numbers
57th
Reverse Polish Notation
18th
Roman to Arabic
22nd
Tongue-twisters
8th