12 Days of Christmas
847860
99 Bottles of Beer
674
Arabic to Roman
487480
Arrows
464439
Card Number Validation
472
Christmas Trees
411
CSS Colors
110
Diamonds
467455
Evil Numbers
426
Fizz Buzz
756868
Hexdump
705
ISBN
735
Morse Encoder
248
Niven Numbers
641695
Odious Numbers
624
Reverse Polish Notation
636
Roman to Arabic
476
Tongue-twisters
609