Update of /cvsroot/python/python/nondist/sandbox/statistics In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv7892 Modified Files: statistics.py Log Message: Limit randomization to just the selection of the pivot rather than shuffling the whole dataset. Index: statistics.py =================================================================== RCS file: /cvsroot/python/python/nondist/sandbox/statistics/statistics.py,v retrieving revision 1.6 retrieving revision 1.7 diff -C2 -d -r1.6 -r1.7 *** statistics.py 17 Feb 2004 13:00:16 -0000 1.6 --- statistics.py 17 Feb 2004 17:39:26 -0000 1.7 *************** *** 91,95 **** """ try: - shuffled = False while True: it = iter(data) --- 91,94 ---- *************** *** 109,115 **** data = notunder n -= len(under) + 1 ! if not shuffled and len(data)>8 and min(len(under), len(notunder)) == 0: ! random.shuffle(data) ! shuffled = True except StopIteration: raise ValueError('not enough elements for the given rank') --- 108,114 ---- data = notunder n -= len(under) + 1 ! if len(data) > 3: ! swap = random.randrange(len(data)) ! data[0], data[swap] = data[swap], data[0] except StopIteration: raise ValueError('not enough elements for the given rank')