class ProfileMethod

  attr_reader :test_methods, :results
  def initialize
    @test_array = [[1, 2, 3, 4, 5, 6, 7, 8, 9, 10],
                   [1, 2, 3, 4, 5, 6, 7, 8, 9, 10],
                   [1, 2, 3, 4, 5, 6, 7, 8, 9, 10],
                   [1, 2, 3, 4, 5, 6, 7, 8, 9, 10],
                   [1, 2, 3, 4, 5, 6, 7, 8, 9, 10],
                   [1, 2, 3, 4, 5, 6, 7, 8, 9, 10],
                   [1, 2, 3, 4, 5, 6, 7, 8, 9, 10],
                   [1, 2, 3, 4, 5, 6, 7, 8, 9, 10],
                   [1, 2, 3, 4, 5, 6, 7, 8, 9, 10],
                   [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]]
    @test_methods = self.class.instance_methods.grep(/using_/)
    @results = Hash[@test_methods.map { |e| [e, 0] }]
  end

  def profile
    100_000.times {
      @test_methods.shuffle.each do |method|
        @results[method] += self.send(method)
      end
    }
    @results.each do |k,v|
      puts "#{k} took in total #{v} seconds to run 100,000 times"
    end
  end

  def using_each
    t = Time.now
    b = []
    @test_array.each {|e| b << e[2]}
    b
    t1 = Time.now
    t1 - t
  end

  def using_transpose
    t = Time.now
    @test_array.transpose[2]
    t1 = Time.now
    t1 - t
  end

  def using_map
    t = Time.now
    @test_array.map { |e| e[2] }
    t1 = Time.now
    t1 - t
  end

  def using_times
    t = Time.now
    b = []
    @test_array.size.times { |n| b << @test_array[n][2] }
    b
    t1 = Time.now
    t1 - t
  end

end

profile_instance = ProfileMethod.new

profile_instance.profile
puts "-" * 70
profile_instance.profile
puts "-" * 70
profile_instance.profile
puts "-" * 70
profile_instance.profile
puts "-" * 70
profile_instance.profile
puts "-" * 70

=begin

using_each took in total 0.15058900000010217 seconds to run 100,000 times
using_transpose took in total 0.41107199999939986 seconds to run 100,000 times
using_map took in total 0.13535200000009373 seconds to run 100,000 times
using_times took in total 0.17524400000011414 seconds to run 100,000 times
----------------------------------------------------------------------
using_each took in total 0.3011159999995495 seconds to run 100,000 times
using_transpose took in total 0.8274969999973887 seconds to run 100,000 times
using_map took in total 0.2726849999998221 seconds to run 100,000 times
using_times took in total 0.33535299999938445 seconds to run 100,000 times
----------------------------------------------------------------------
using_each took in total 0.46122299999780403 seconds to run 100,000 times
using_transpose took in total 1.2426729999946375 seconds to run 100,000 times
using_map took in total 0.40910999999767317 seconds to run 100,000 times
using_times took in total 0.5007279999979476 seconds to run 100,000 times
----------------------------------------------------------------------
using_each took in total 0.6118289999977313 seconds to run 100,000 times
using_transpose took in total 1.6469549999914233 seconds to run 100,000 times
using_map took in total 0.5441779999968219 seconds to run 100,000 times
using_times took in total 0.6630769999975049 seconds to run 100,000 times
----------------------------------------------------------------------
using_each took in total 0.7590519999982025 seconds to run 100,000 times
using_transpose took in total 2.047383999988493 seconds to run 100,000 times
using_map took in total 0.6817219999984199 seconds to run 100,000 times
using_times took in total 0.8306449999970401 seconds to run 100,000 times
----------------------------------------------------------------------

=end