pgm09_01.cpp

此文件为网络书籍数据结构的面向对象方法的源码

//
//   This file contains the C++ code from Program 9.1 of
//   "Data Structures and Algorithms
//    with Object-Oriented Design Patterns in C++"
//   by Bruno R. Preiss.
//
//   Copyright (c) 1998 by Bruno R. Preiss, P.Eng.  All rights reserved.
//
//   http://www.pads.uwaterloo.ca/Bruno.Preiss/books/opus4/programs/pgm09_01.cpp
//
class Tree : public virtual Container
{
    class Iter;
public:
    virtual Object& Key () const = 0;
    virtual Tree& Subtree (unsigned int) const = 0;
    virtual bool IsEmpty () const = 0;
    virtual bool IsLeaf () const = 0;
    virtual unsigned int Degree () const = 0;
    virtual int Height () const;
    virtual void DepthFirstTraversal (PrePostVisitor&) const;
    virtual void BreadthFirstTraversal (Visitor&) const;
    void Accept (Visitor&) const;
};