On 21 Nov., 23:36, Mensanator <[EMAIL PROTECTED]> wrote: > Your rules appear to be incomplete and inconsistent. OK. Let me try to clarify then...
> > 3. Pattern A only consists of the numbers 0, 3, and 9. 3, 3 is always > > followed by 0 > > But does a 3 always follow a 3? Can you have 3, 0, 3, 0? > Can 0's occur without 3's, such as 0, 0, 0? Yes, 3s always comes in pairs. So, 3, 0, 3, 0 is not allowed. And of the numbers 0, 3, and 9; 0 will always be the first after the pair of 3s > > > 4. Pattern B only consists of the numbers 1, 6, and 10. 6, 6, is > > always followed by 1 > > 5. There may be other numbers interspersed within the sequence, but > > they can be ignored > > So, I can have 3, 3, 0, 7, 3, 3, 0? Yes, there is a point I did not mention propery in my first description: The number 7 for instance could appear in that position, but it would not be repetitive; as a matter of fact these other numbers can be filtered away before looking for the pattern, so let us just forgot about those. > > What if the 7 occurs after the pair of 3's? Is the number following > the 7 forced to be 0, i.e., is 3, 3, 7, 3, 3, 0 legal? No, it would have to be 3, 3, 0, 7, 3, 3, 0, it is sequeezed in - but as mentioned they can be prefiltered out of the problem > > > 7. The beginning of a pattern is marked by the transition from oner > > pattern to the other. > > Can there be an ignored number between the patterns? Is > 9,3,3,0,7,10,6,6,1 > legal? If NO, you violate Rule 5. If YES, you violate the second Rule > 7. Yes you are right. This complication is again eliminated by prefiltering "other" numbers out -- Slaunger -- http://mail.python.org/mailman/listinfo/python-list
