12 Days of Christmas
878
99 Bottles of Beer
725
Abundant Numbers
750
Arabic to Roman
413
Christmas Trees
753
CSS Colors
232
Cubes
469
Day of Week
689
Diamonds
410
Divisors
710
Emirp Numbers
516
Emojify
496
Evil Numbers
514
Fibonacci
733
Fizz Buzz
852
1,000
651
Happy Numbers
559
Intersection
709
Leap Years
774
Look and Say
638
Morse Decoder
325
Morse Encoder
368
Niven Numbers
840
Odious Numbers
617
Ordinal Numbers
868
Pangram Grep
615
Pascal’s Triangle
536
Pernicious Numbers
486
Poker
446
Prime Numbers
507
Quine
893
Rock-paper-scissors-Spock-lizard
717
Roman to Arabic
632
Rule 110
434
Seven Segment
650
Sierpiński Triangle
290
Spelling Numbers
737
Sudoku
335
Ten-pin Bowling
450
Tongue-twisters
646
United States
371