153 lines
3.3 KiB
C++
153 lines
3.3 KiB
C++
// This may look like C code, but it is really -*- C++ -*-
|
|
/*
|
|
Copyright (C) 1988 Free Software Foundation
|
|
written by Doug Lea (dl@rocky.oswego.edu)
|
|
|
|
This file is part of the GNU C++ Library. This library is free
|
|
software; you can redistribute it and/or modify it under the terms of
|
|
the GNU Library General Public License as published by the Free
|
|
Software Foundation; either version 2 of the License, or (at your
|
|
option) any later version. This library is distributed in the hope
|
|
that it will be useful, but WITHOUT ANY WARRANTY; without even the
|
|
implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
|
PURPOSE. See the GNU Library General Public License for more details.
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with this library; if not, write to the Free Software
|
|
Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
|
|
#ifndef _<T>BSTSet_h
|
|
#ifdef __GNUG__
|
|
#pragma interface
|
|
#endif
|
|
#define _<T>BSTSet_h 1
|
|
|
|
#include "<T>.Set.h"
|
|
|
|
#ifndef _<T>BSTNode
|
|
#define _<T>BSTNode 1
|
|
|
|
struct <T>BSTNode
|
|
{
|
|
<T>BSTNode* lt;
|
|
<T>BSTNode* rt;
|
|
<T>BSTNode* par;
|
|
<T> item;
|
|
<T>BSTNode(<T&> h, <T>BSTNode* l=0, <T>BSTNode* r=0,
|
|
<T>BSTNode* p = 0);
|
|
~<T>BSTNode();
|
|
};
|
|
|
|
inline <T>BSTNode::<T>BSTNode(<T&> h, <T>BSTNode* l, <T>BSTNode* r,
|
|
<T>BSTNode* p)
|
|
:lt(l), rt(r), par(p), item(h) {}
|
|
|
|
inline <T>BSTNode::~<T>BSTNode() {}
|
|
|
|
typedef <T>BSTNode* <T>BSTNodePtr;
|
|
|
|
#endif
|
|
|
|
class <T>BSTSet : public <T>Set
|
|
{
|
|
protected:
|
|
<T>BSTNode* root;
|
|
|
|
<T>BSTNode* leftmost();
|
|
<T>BSTNode* rightmost();
|
|
<T>BSTNode* pred(<T>BSTNode* t);
|
|
<T>BSTNode* succ(<T>BSTNode* t);
|
|
void _kill(<T>BSTNode* t);
|
|
<T>BSTNode* _copy(<T>BSTNode* t);
|
|
|
|
public:
|
|
<T>BSTSet();
|
|
<T>BSTSet(<T>BSTSet& a);
|
|
inline ~<T>BSTSet();
|
|
|
|
Pix add(<T&> item);
|
|
void del(<T&> item);
|
|
inline int contains(<T&> item);
|
|
|
|
inline void clear();
|
|
|
|
inline Pix first();
|
|
inline void next(Pix& i);
|
|
inline <T>& operator () (Pix i);
|
|
Pix seek(<T&> item);
|
|
|
|
Pix last();
|
|
void prev(Pix& i);
|
|
|
|
int operator == (<T>BSTSet& b);
|
|
int operator != (<T>BSTSet& b);
|
|
int operator <= (<T>BSTSet& b);
|
|
|
|
void balance();
|
|
int OK();
|
|
};
|
|
|
|
inline <T>BSTSet::~<T>BSTSet()
|
|
{
|
|
_kill(root);
|
|
}
|
|
|
|
inline <T>BSTSet::<T>BSTSet()
|
|
{
|
|
root = 0;
|
|
count = 0;
|
|
}
|
|
|
|
|
|
inline <T>BSTSet::<T>BSTSet(<T>BSTSet& a)
|
|
{
|
|
count = a.count;
|
|
root = _copy(a.root);
|
|
}
|
|
|
|
inline int <T>BSTSet::operator != (<T>BSTSet& b)
|
|
{
|
|
return ! (*this == b);
|
|
}
|
|
|
|
inline Pix <T>BSTSet::first()
|
|
{
|
|
return Pix(leftmost());
|
|
}
|
|
|
|
inline Pix <T>BSTSet::last()
|
|
{
|
|
return Pix(rightmost());
|
|
}
|
|
|
|
inline void <T>BSTSet::next(Pix& i)
|
|
{
|
|
if (i != 0) i = Pix(succ((<T>BSTNode*)i));
|
|
}
|
|
|
|
inline void <T>BSTSet::prev(Pix& i)
|
|
{
|
|
if (i != 0) i = Pix(pred((<T>BSTNode*)i));
|
|
}
|
|
|
|
inline <T>& <T>BSTSet::operator () (Pix i)
|
|
{
|
|
if (i == 0) error("null Pix");
|
|
return ((<T>BSTNode*)i)->item;
|
|
}
|
|
|
|
inline void <T>BSTSet::clear()
|
|
{
|
|
_kill(root);
|
|
count = 0;
|
|
root = 0;
|
|
}
|
|
|
|
inline int <T>BSTSet::contains(<T&> key)
|
|
{
|
|
return seek(key) != 0;
|
|
}
|
|
|
|
#endif
|