12 Days of Christmas
847860
99 Bottles of Beer
674
Arabic to Roman
486480
Arrows
463438
Card Number Validation
470
Christmas Trees
410
CSS Colors
110
Diamonds
466454
Evil Numbers
426
Fizz Buzz
816868
Hexdump
705
ISBN
735
Morse Encoder
248
Niven Numbers
641695
Odious Numbers
623
Reverse Polish Notation
635
Roman to Arabic
476
Tongue-twisters
609