virtual uint rankLessThan(uint &symbol, uint pos);
virtual uint select(uint symbol, uint pos, uint l, wt_coder * c);
virtual uint access(uint pos);
+ virtual uint access(uint pos, uint &rank);
virtual void access(std::vector<int> &result, uint i, uint j, uint min, uint max, uint l, uint pivot);
virtual void access(std::vector<int> &result, uint i, uint j);
virtual uint access(uint i, uint j, uint min, uint max, uint l, uint pivot);