ameblo2.rb

# encoding: utf-8

class ReportAccess
  def who_can_see(user_names, allowed_data, report_data)
    h = {}
    allowed_data.each_with_index do | data, i |
      data.split(/ /).each do | v |
        h[i] = user_names[i] unless report_data.index(v).nil?
      end
    end
    return h.values
  end
end

ra = ReportAccess.new
p ra.who_can_see(["usrA","usrB","usrC"], ["data1 data3","data2 data4","data3 data5 data6"], ["data1"])
p ra.who_can_see(["kathy", "john", "dan", "steve", "cheryl", "tony"], ["users data", "data orders", "users permissions", "system users controls", "default", "admin users"], ["users"])
p ra.who_can_see(["jim", "scott", "barbara"], ["users order products", "products shipping", "tracking products orders"], ["admin"])