Ruby Vector extensions, DNS

require 'matrix'

class Vector
 
  def include?(search_term)
    self.to_a.include?(search_term)
  end
   
  def to_float
    new_elements = []
    self.to_a.each do |element|
        element = element.to_f if element.class == Fixnum
        new_elements << element
      end
          
      Vector.elements(new_elements)
  end

  def pretty  
    counter = 0 
    self.map do |element|
      puts "[#{counter}] = #{element}"
      counter += 1
    end
  end

  def empty?
    return true if self.nil?  
    empty = true
    self.map do |element|
      if case(element)
           when Fixnum
             element == 0
           when nil
             true
           when String
             element.empty? or element == ' '
           when Float
             element == 0.0
           end
        next
      else
        empty = false
        break
      end
    end

    empty
  end

  def self.random(size, max_value = 50)
    elements = []
    (1..size).each do |i|
      elements << rand(max_value) + 1
    end

    Vector.elements(elements)
  end

end