scrabble_scorer.rb

class Scrabble

  def score(word)
    letters = word.upcase.split('')

    total = 0
    letters.each do |letter|
      total += letter_scores[letter]
    end

    total
  end

  def letter_scores
    {  "A"=>1, "B"=>3, "C"=>3, "D"=>2,
      "E"=>1, "F"=>4, "G"=>2, "H"=>4,
      "I"=>1, "J"=>8, "K"=>5, "L"=>1,
      "M"=>3, "N"=>1, "O"=>1, "P"=>3,
      "Q"=>10, "R"=>1, "S"=>1, "T"=>1,
      "U"=>1, "V"=>4, "W"=>4, "X"=>8,
      "Y"=>4, "Z"=>10
    }
  end
end

puts Scrabble.new.score("ruBy")

word_counter.rb

class WordCounter
  attr_reader :words

  def initialize(content)
    @words = content.downcase.gsub(/[.,]/, '').split(' ')
  end

  def count
    word_frequency = Hash.new(0)

    words.each do |word|
      word_frequency[word] += 1
    end

    word_frequency.sort_by {|key, value| value }.reverse.to_h
  end
end

text = "Initially, Matz looked at other languages to find an ideal syntax. Recalling his search, he said, “I wanted a scripting language that was more powerful than Perl, and more object-oriented than Python.”

In Ruby, everything is an object. Every bit of information and code can be given their own properties and actions. Object-oriented programming calls properties by the name instance variables and actions are known as methods. Ruby’s pure object-oriented approach is most commonly demonstrated by a bit of code which applies an action to a number.
Ruby is a language of careful balance. Its creator, Yukihiro “Matz” Matsumoto, blended parts of his favorite languages (Perl, Smalltalk, Eiffel, Ada, and Lisp) to form a new language that balanced functional programming with imperative programming.

He has often said that he is “trying to make Ruby natural, not simple,” in a way that mirrors life.

Building on this, he adds:

Ruby is simple in appearance, but is very complex inside, just like our human body"

puts WordCounter.new(text).count