Added my simpler implementation for the recursive max function (#300)

added selection sort for R (#301)

Add elixir longest common subsequence implementation (#306)

Update .gitignore (#302)

Fix typo in variable name in selection sort example (#304)

D solutions (#305)

Add elixir longest common substring implementation (#307)

Add TypeScript examples for chapters 10 and 11 (#311)

add rust quicksort (#292)

Contributing guidelines update

Increase readability, update code style and optimise for modern JavaScript (#273)

Update 01_binary_search.cpp (#271)

Update 04_recursive_max.js with fix for alternative solution (#262)

Added sum with recursion to 03_recursion, java folder (#254)

Added 01_filesystem_dfs for 07_trees in C# (#299)