Takes &Vec and counts the quantity of each word. Returns Hashmap<String,u32>, with String being the word and u32 the quantity
Get maximum index and garantee that index does not exeed total length of Vec
Get mininum index and guarantee that index is alway >=0
save file to path. Return result.
Sort words in HashMap<Word, Frequency> according to frequency into Vec<String, u32>.
Splits String into single words as Vector.
Splits String at whitespaces and removes chars like , or ?. Change the relevant line to remove or add chars from provided String.