brainfuck
28th
Card Number Validation
39th
Collatz
59th
Cubes
19th
Day of Week
1st
Fibonacci
1st
Fizz Buzz
1st
Fractions
59th
Leap Years
1st
Odious Numbers
79th
Ordinal Numbers
1st
Pascal’s Triangle
48th
Quine
29th1st1st
Reverse Polish Notation
21st
Roman to Arabic
15th
ROT13
13th
12th
Scrambled Sort
9th
Tic-tac-toe
40th
United States
3rd
Van Eck Sequence
68th
π
22nd