
1. Currency

Solved by 49


2. Check if a number is prime

Solved by 567


3. Sum of every prime number below n

Solved by 421


4. Print every prime numbers in a range

Solved by 320


5. Next prime

Solved by 275


6. Reverse Roman Numerals

Solved by 418


7. Friday the 13th

Solved by 325


8. The missing card

Solved by 352


9. Playing with anagrams

Solved by 116


10. Flatten lists

Solved by 306


11. Perfect deck shuffle

Solved by 274


12. The Fibonacci sequence

Solved by 312


13. Hearts emojis

Solved by 229


14. Text framing

Solved by 29


15. Draw N Squares

Solved by 212


16. Pernicious numbers

Solved by 194


17. Side by side

Solved by 113


18. Largest product in a series

Solved by 150


19. Roman Numerals

Solved by 134


20. Caesar Cypher

Solved by 128


21. Longest Collatz sequence

Solved by 140


22. Largest product in a grid

Solved by 103


23. Break a safe

Solved by 134


24. Password Generator

Solved by 123


25. bencode / bdecode

Solved by 58


26. Py Master Mind

Solved by 72


27. Elementary cellular automaton

Solved by 53


28. Sequence Mining

Solved by 41


29. Change for 42€

Solved by 40


30. Pascal's triangle

Solved by 46


31. IRC logs as CSV

Solved by 26
