12 Days of Christmas
862869
99 Bottles of Beer
684
Arabic to Roman
520497
Arrows
495456
ASCII Table
889
Calendar
636
Card Number Validation
520
Christmas Trees
431
CSS Colors
118
Diamonds
495472
Emojify
307
Evil Numbers
450
Fizz Buzz
771875
Fractions
724643
Hexdump
731
ISBN
781
Morse Encoder
253
Niven Numbers
674712
Odious Numbers
663
Reverse Polish Notation
720
Roman to Arabic
509
ROT13
380
Sudoku
382
Tongue-twisters
621