def shellSort(items):      inc = len(items) / 2      while inc:          for i in xrange(len(items)):              j = i              temp = items[i]              while j >= inc and items[j-inc] > temp:                  items[j] = items[j - inc]                  j -= inc              items[j] = temp          inc = inc/2 if inc/2 else (0 if inc==1 else 1)     a = [35, -8, 11, 1, 68, 0, 3];  shellSort(a)  print a # [-8, 0, 1, 3, 11, 35, 68]