```ruby
module ActiveRecord::Turntable
  module Algorithm
    extend ActiveSupport::Autoload

    eager_autoload do
      autoload :Base
      autoload :RangeAlgorithm
      autoload :RangeBsearchAlgorithm
      autoload :ModuloAlgorithm
    end
  end
end
```

Add `Algorithm.class_for` method for DSL
user
```ruby
module ActiveRecord::Turntable
  module Algorithm
    extend ActiveSupport::Autoload

    eager_autoload do
      autoload :Base
      autoload :RangeAlgorithm
      autoload :RangeBsearchAlgorithm
      autoload :ModuloAlgorithm
    end

    def class_for(name_or_class)
      case name_or_class
      when Algorithm::Base
        name_or_class
      else
        const_get("#{name_or_class.classify}Algorithm")
      end
    end

    module_function :class_for
  end
end
```
assistant