12 Days of Christmas
830
99 Bottles of Beer
685
Arabic to Roman
577
Arithmetic Numbers
823
Arrows
478
ASCII Table
486
Card Number Validation
542
Collatz
635
670
CSS Colors
246
Day of Week
772
Emojify
284
Evil Numbers
816
Fibonacci
7871,000878
Fizz Buzz
875
770707
Gray Code Encoder
544
Happy Numbers
579
Intersection
818
ISBN
695
Leap Years
600809758778771725851
772754
Morse Encoder
283
Ordinal Numbers
721
PalindromemordnilaP
784
Quine
484
Roman to Arabic
554
ROT13
496
Tic-tac-toe
581