snake_camel_case_conversion.rb

  # Convert given strig in CamelCase to snake_case.
  def camel_to_snake_case string
    string.gsub(/([^A-Z])([A-Z])/, '\1_\2').downcase
  end

  # Convert given string in snake_case to CamelCase
  def snake_to_camel_case string
    string.split('_').map(&:downcase).map(&:capitalize).join('')
  end