
1. Currency

Solved by 73


2. Check if a number is prime

Solved by 629


3. Sum of every prime number below n

Solved by 474


4. Print every prime numbers in a range

Solved by 366


5. Next prime

Solved by 310


6. Reverse Roman Numerals

Solved by 446


7. Friday the 13th

Solved by 352


8. The missing card

Solved by 381


9. Playing with anagrams

Solved by 140


10. Flatten lists

Solved by 329


11. Perfect deck shuffle

Solved by 297


12. The Fibonacci sequence

Solved by 339


13. Hearts emojis

Solved by 246


14. Text framing

Solved by 46


15. Draw N Squares

Solved by 234


16. Pernicious numbers

Solved by 213


17. Side by side

Solved by 122


18. Largest product in a series

Solved by 165


19. Roman Numerals

Solved by 147


20. Caesar Cypher

Solved by 144


21. Longest Collatz sequence

Solved by 153


22. Largest product in a grid

Solved by 119


23. Break a safe

Solved by 149


24. Password Generator

Solved by 138


25. bencode / bdecode

Solved by 64


26. Py Master Mind

Solved by 78


27. Elementary cellular automaton

Solved by 58


28. Sequence Mining

Solved by 48


29. Change for 42€

Solved by 44


30. Pascal's triangle

Solved by 52


31. IRC logs as CSV

Solved by 30
