Solutions for the 99 Haskell Problems serie! I've added a complexity rating for every problem, from ★☆☆☆☆ to ★★★★★. Problems 01-10 Source: https://wiki.haskell.org/99_questions/1_to_10 Solutions: Problem 01 - ★☆☆☆☆ Problem 02 - ★☆☆☆☆ Problem 03 - ★☆☆☆☆ Problem 04 - ★☆☆☆☆ Problem 05 - ★☆☆☆☆ Problem 06 - ★☆☆☆☆ Problem 07 - ★☆☆☆☆ Problem 08 - ★☆☆☆☆ Problem 09 - ★☆☆☆☆ Problem 10 - ★☆☆☆☆ Problems 11-20 Source: https://wiki.haskell.org/99_questions/11_to_20 Solutions: Problem 01 - ★★☆☆☆ License Unlicense (Public Domain)