Most Common Words

This challenge requires you to find the most common words. There will be two leyword arguments passed in text and n. Return the most common words in the form of a dictionary.

text would be the variable containing all the words, while n is a number that means return the top n most common words from text. In case n exceeds the total number of unique words, return the full dictionary of most common words.

text will only contain letters, spaces, and basic punctuation like fullstops, commas, exclamation marks, question marks and apostrophes, which means you would have to split the text into words as well.

In the case of an apostrophe: "where's" would be considered as two words, "where" and "s", and "I'm" would be "i" and "m".

All words in the returned dictionary should be lower case.

Examples

words = "How much wood could a woodchuck chuck If a woodchuck could chuck wood? As much wood as a woodchuck could chuck, If a woodchuck could chuck wood"

most_common_words(text=words, n=3) ➞ {
  "wood": 4,
  "could": 4,
  "a": 4
}

most_common_words(text=words, n=7) ➞ {
  "wood": 4,
  "could": 4,
  "a": 4,
  "woodchuck": 4,
  "chuck": 4,
  "much": 2,
  "if": 2
}

most_common_words(text=words, n=999) ➞ {
  "wood": 4,
  "could": 4,
  "a": 4,
  "woodchuck": 4,
  "chuck": 4,
  "much": 2,
  "if": 2,
  "as": 2,
  "how": 1
}

Notes

In the case of duplicate values (eg. { "word1": 1, "word2": 1 }), their order of appearance should follow their position in the text.

For example:

most_common_words("word1, word2", 1) ➞ { "word1": 1 }
most_common_words("word2, word1", 1) ➞ { "word2": 1 }