code: def findLowest(self, symorders):
          
          _range = range(len(symorders))
          stableSymorders = map(None, symorders, _range)
  
          # XXX FIX ME
          # Do I need to sort?
          stableSymorders.sort()
          lowest = None
          for index in _range:
              if stableSymorders[index][0] == lowest:
                  return stableSymorders[index-1][1]
              lowest = stableSymorders[index][0]
          return -1
docs: Find the position of the first lowest tie in a
          symorder or -1 if there are no ties