1 trial  of     sort [10000 of 1000000] (   3.156s total), 3.156s/trial

  1 trial  of topNbsAB [10000 of 1000000] (  13.641s total), 13.641/trial

  1 trial  of  topNbs@ [10000 of 1000000] (   4.734s total), 4.734s/trial