Yes. This is very similar if you consider the path on the b-tree with the alphabet L, R. It doesn't follow traditional lexical sorting though since RRL (5/2) co

Yes. This is very similar if you consider the path on the b-tree with the alphabet L, R. It doesn't follow traditional lexical sorting though since RRL (5/2) comes before RR (3/1). This is handy though. Consider having something at index 'a'. Now find something that comes right before it. You can't if you use traditional alphabetical ordering.