Practice

/**
 * Problem:
 * We would like to reverse sentences by keeping them readable but changing the meaning
 * For instance, after apply your function on `you can cage a swallow can't you`
 * you must get: `you can't swallow a cage can you`.
 *
 * We want solve every problem separaltely rather than create a tightly coupled function which only can solve one problem.
 *
 * To ease the pain of defining this problems, you take the functions headers and some docs for granted:
 *
 * words :: String -> List String
 * This function should take a string and return a list with each word
 *
 * ---
 *
 * reverse :: List a -> List a
 * This function should take a list of any type and reverse it by creating a new list with the same type of List a
 *
 * ---
 *
 * unwords :: List String -> String
 * This function should take a List of strings and join it into a string with separating spaces
 *
 * ---
 *
 * reverseLine :: String -> String
 * This function should take a string sentence and must return it reversed, changing the meaning
 *
 * In this last one, think how you can take advantage of the others functions.
 * Can you compose them in some way to solve the problem?
 *
 *
 * Tips: Try to use point-free style when you compose your functions.
 *
 */