prelude: |
  array_length = 2
  fixnum_array2 = array_length.times.to_a.map {rand(10000)}
  float_array2 = array_length.times.to_a.map {rand(10000.0).to_f}
  string_array2 = array_length.times.to_a.map {"r" * rand(1..10000)}
  mix_array2 = array_length.times.to_a.map {if rand(1..100) <= 50 then rand(1..10000).to_f else rand(1..10000) end}
  all_zero_array2 =array_length.times.to_a.map {0}

  array_length = 10
  fixnum_array10 = array_length.times.to_a.map {rand(10000)}
  float_array10 = array_length.times.to_a.map {rand(10000.0).to_f}
  string_array10 = array_length.times.to_a.map {"r" * rand(1..10000)}
  mix_array10 = array_length.times.to_a.map {if rand(1..100) <= 50 then rand(1..10000).to_f else rand(1..10000) end}
  all_zero_array10 =array_length.times.to_a.map {0}

  array_length = 1000
  fixnum_array1000 = array_length.times.to_a.map {rand(10000)}
  float_array1000 = array_length.times.to_a.map {rand(10000.0).to_f}
  string_array1000 = array_length.times.to_a.map {"r" * rand(1..10000)}
  mix_array1000 = array_length.times.to_a.map {if rand(1..100) <= 50 then rand(1..10000).to_f else rand(1..10000) end}
  all_zero_array1000 =array_length.times.to_a.map {0}

  array_length = 100000
  fixnum_array100000 = array_length.times.to_a.map {rand(10000)}
  float_array100000 = array_length.times.to_a.map {rand(10000.0).to_f}
  string_array100000 = array_length.times.to_a.map {"r" * rand(1..10000)}
  mix_array100000 = array_length.times.to_a.map {if rand(1..100) <= 50 then rand(1..10000).to_f else rand(1..10000) end}
  all_zero_array100000 =array_length.times.to_a.map {0}

benchmark:
  fixnum_array2.sort_by: fixnum_array2.sort_by {|a| a}
  float_array2.sort_by:  float_array2.sort_by {|a| a}
  string_length2.sort_by: string_array2.sort_by {|a| a.length}
  mix_array2.sort_by:  mix_array2.sort_by {|a| a}
  all_zero2.sort_by: all_zero_array2.sort_by{|a| a}

  fixnum_array10.sort_by: fixnum_array10.sort_by {|a| a}
  float_array10.sort_by:  float_array10.sort_by {|a| a}
  string_length10.sort_by: string_array10.sort_by {|a| a.length}
  mix_array10.sort_by:  mix_array10.sort_by {|a| a}
  all_zero10.sort_by: all_zero_array10.sort_by{|a| a}

  fixnum_array1000.sort_by: fixnum_array1000.sort_by {|a| a}
  float_array1000.sort_by:  float_array1000.sort_by {|a| a}
  string_length1000.sort_by: string_array1000.sort_by {|a| a.length}
  mix_array1000.sort_by:  mix_array1000.sort_by {|a| a}
  all_zero1000.sort_by: all_zero_array1000.sort_by{|a| a}

  fixnum_array100000.sort_by: fixnum_array100000.sort_by {|a| a}
  float_array100000.sort_by:  float_array100000.sort_by {|a| a}
  string_length100000.sort_by: string_array100000.sort_by {|a| a.length}
  mix_array100000.sort_by:  mix_array100000.sort_by {|a| a}
  all_zero100000.sort_by: all_zero_array100000.sort_by{|a| a}