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标题:[原创]红黑树.
只看楼主 加入收藏
中学者
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[原创]红黑树.
希望对大家有帮助,,,,,一起进步......
PS:  在C区发过的,但是还是应该发在这里...
/*****************************************************************
** HighlightCodeV3.0 software by yzfy(雨中飞燕) [url]http://[/url] **
*****************************************************************/
enum COLOR { RED,BLACK };
template<typename Ty>
struct node
{
   
int key;
    Ty data;
    node<Ty>* leftchild;
    node<Ty>* rightchild;
    node<Ty>* parent;
    COLOR color;   
    node(const Ty& v,int k):data(v)
    {
        
key = k;
        color = RED;
        leftchild = rightchild = parent =0;
    }
   
node(){ color = BLACK; }
}
;  
template<typename _value>
class BBST
{
public:
    virtual ~BBST() = 0;
    virtual void Insert(const _value& value,int key)=0;
    virtual const node<_value>* Delete(int key) =0;
    virtual const node<_value>* Search(int key) const;
   
    bool empty() const ;
    int size() const ;
    int height() const ;
   
    void InOrder() const ;
    void PostOrder() const ;
    void PreOrder() const ;
    void LevelOrder() const ;
protected:
    node<_value>* root;
    node<_value>* null;
    int countNode;
protected:
    virtual void LeftRotate(node<_value>* parent,node<_value>* child) =0;
    virtual void RightRotate(node<_value>* parent,node<_value>* child) =0;
    node<_value>* successor(node<_value>* current) const;
    node<_value>* predecessor(node<_value>* current) const;
    node<_value>* search(int skey) const;
private:     
    int height(const node<_value>* root) const;
    void inorder(const node<_value>* root) const ;
    void inorder(node<_value>& root) const ;
    void postorder(const node<_value>* root) const ;
    void postorder(node<_value>& root) const ;
    void preorder(const node<_value>* root) const ;
    void preorder(node<_value>& root) const ;
    node<_value>* Minimum(node<_value>* current) const;
    node<_value>* Maximum(node<_value>* current) const;
};
template<typename _Ty>
inline BBST<_Ty>::~BBST() {}
//    const node<_Ty>* Search(int key) const
template<typename _Ty>
inline const node<_Ty>* BBST<_Ty>::Search(int skey) const
{
        
return search(skey);
}
template<typename _Ty>
node<_Ty>* BBST<_Ty>::search(int skey) const
{
        
for(node<_Ty>* current=root;current!=null; )
        {
        
if(current->key == skey) return current;
        if(current->key < skey) current = current->rightchild;
        else current = current->leftchild;
        }
        
return null;
}
//    Minimum  and  Maximum
template<typename _Ty>
node<_Ty>* BBST<_Ty>::Minimum(node<_Ty>* _node) const
{
        
for(node<_Ty>* current=_node;current!=null;)
        {
        
if( current->leftchild!=null) current = current->leftchild;
        else return current;
        }
   
return null;
}
template<typename _Ty>
node<_Ty>* BBST<_Ty>::Maximum(node<_Ty>* _node) const
{
        
for(node<_Ty>* current=_node;current!=null;)
        {
            
if( current->rightchild!=null) current = current->rightchild;
            else return current;
        }
   
return null;
}
//    successor  and  predecessor
template<typename _Ty>
node<_Ty>* BBST<_Ty>::successor(node<_Ty>* current) const
{
        
if( current->rightchild!=null) return Minimum(current->rightchild);
        
        for(node<_Ty>* __node=current->parent;__node!=null;)
        {
            
if(__node->leftchild == current)
            {
               
current = __node;
                __node = null;
            }
            
else
            
{
               
current = __node;
                __node = __node->parent;
            }
        }
   
return current;
}
template<typename _Ty>
node<_Ty>* BBST<_Ty>::predecessor(node<_Ty>* current) const
{
        
if( current->leftchild!=null) return Maximum(current->leftchild);
        
        for(node<_Ty>* __node=current->parent;__node!=null;)
        {
            
if(__node->rightchild == current)
            {
               
current = __node;
                __node = null;
            }
            
else
            
{
               
current = __node;
                __node = __node->parent;
            }
        }
   
return current;
}
//    bool empty() const
template<typename _Ty>
inline bool BBST<_Ty>::empty() const
{
   
return root == null;
}
//    int size() const
template<typename _Ty>
inline int BBST<_Ty>::size() const
{
   
return countNode;
}
//    int height() const
template<typename _Ty>
inline int BBST<_Ty>::height() const
{
   
return height(root);
}
//     int height(const node<_Ty>* root) const
template<typename _Ty>
int BBST<_Ty>::height(const node<_Ty>* root) const
{
   
if( root==null ) return 0;
    else return height(root->leftchild)>height(root->rightchild)?
                height(root->leftchild)+1:height(root->rightchild)+1;
}
//     void InOrder() const
template<typename _Ty>
void BBST<_Ty>::InOrder() const
{
   
// srand((unsigned int)time(0));
   
inorder(*root);
}
template<typename _Ty >
void BBST<_Ty>::inorder(const node<_Ty>* root) const
{
   
if( root!=null )
    {
        
inorder(root->leftchild);
        std::cout<<current->data<<','
                    
<<current->color<<" ";
        inorder(root->rightchild);
    }
}
template<typename _Ty>
void BBST<_Ty>::inorder( node<_Ty> & root) const
{
   
using std::deque;
    deque<node<_Ty>*> que;
    for(node<_Ty>* current=&root; current!=null|| !que.empty(); )
    {
        
for(;current!=null ; )
        {
            
que.push_front(current);
            current = current->leftchild;
        }
        
current = que.front();
        que.pop_front();
        std::cout<<current->data<<','
               
<<current->color<<" ";
        current = current->rightchild;
    }
}
//     void PostOrder() const
template<typename _Ty>
void BBST<_Ty>::PostOrder() const
{
   
// srand((unsigned int)time(0));
   
postorder(*root);
}
template<typename _Ty>
void BBST<_Ty>::postorder(const node<_Ty>* root) const
{
   
if( root!=null )
    {
        
postorder(root->leftchild);
        postorder(root->rightchild);
        std::cout<<current->data<<','
                    
<<current->color<<" ";
    }
}
template<typename _Ty>
void BBST<_Ty>::postorder( node<_Ty>& root) const
{
   
using std::deque;
    deque<node<_Ty>* > que;
    for(node<_Ty>* current=&root,*visited=0;
        current!=null || !que.empty(); )
    {
        
for(; current!=null; )
        {
            
que.push_front(current);
            current = current->leftchild;
        }
        
current = que.front();
        que.pop_front();
        if(current->rightchild!=null&&visited!=current->rightchild)
        {
            
que.push_front(current);
            current = current->rightchild;
        }
        
else
        
{
            
visited = current;
            std::cout<<current->data<<','
                        
<<current->color<<" ";
            current = null;
        }
    }
}
//       void PreOrder() const
template<typename _Ty>
void BBST<_Ty>::PreOrder() const
{
   
// srand((unsigned int) time(0));
   
preorder(*root);
}
template<typename _Ty>
void BBST<_Ty>::preorder(const node<_Ty>* root) const
{
   
if( root!=null )
    {
        
std::cout<<current->data<<','
               
<<current->color<<" ";
        preorder(root->leftchild);
        preorder(root->rightchild);
    }
}
template<typename _Ty>
void BBST<_Ty>::preorder( node<_Ty>& root) const
{
   
using std::deque;
    deque<node<_Ty>*> que;
    for(node<_Ty>* current=&root;current!=null || !que.empty();)
    {
            
for( ; current!=null; )
            {
               
std::cout<<current->data<<','
                        
<<current->color<<" ";
                que.push_front(current);
                current = current->leftchild;
            }
            
current = que.front();
            que.pop_front();
            current = current->rightchild;
    }
}
//      void LevelOrder() const
template<typename _Ty>
void BBST<_Ty>::LevelOrder() const
{
   
using std::deque;
    deque<node<_Ty>*> que;
    for(node<_Ty>* current=root;current!=null||!que.empty();)
    {
        
std::cout<<current->data<<','
               
<<current->color<<" ";
        if(current->leftchild!=null) que.push_front(current->leftchild);
        if(current->rightchild!=null) que.push_front(current->rightchild);
        if(!que.empty())
        {
        
current = que.back();
        que.pop_back();
        }
        
else current = null;
    }
}
//------------------  RBT class ------------------------------------
//------------------------------------------------------------------
template<typename _Ty>
class RBT: public BBST<_Ty>
{
public :
        RBT();
        ~RBT();
        void Insert(const _Ty& value,int skey);
        const node<_Ty>* Delete(int skey);
protected :
        void LeftRotate(node<_Ty>* __parent,node<_Ty>* child);
        void RightRotate(node<_Ty>* __parent,node<_Ty>* child);
private:
        void free(node<_Ty>* current);
        void insert_balance(node<_Ty>* current);
        void delete_balance(node<_Ty>* current);
};
//    intilization and destroy
template<typename _Ty>
inline RBT<_Ty>::RBT()
{
   
null = new node<_Ty>;
    countNode = 0;
    root = null;
}
template<typename _Ty>
void RBT<_Ty>::free(node<_Ty>* current)
{
   
if( current!=null )
    {
        
free(current->leftchild);
        free(current->rightchild);
        delete current;
    }
}
template<typename _Ty>
RBT<_Ty>::~RBT()
{
   
free(root);
    delete null;
}
//     Insert  and  Delete
template<typename _Ty>
void RBT<_Ty>::Insert(const _Ty& value,int skey)
{
   
node<_Ty>* current = root ;
    if( current!=null )
    {
        
for(node<_Ty>* find=current; find!=null;)
        {
            
if(find->key == skey) return;
            current = find;
            if(find->key<skey)  find = find->rightchild;
            else  find = find->leftchild;
        }
        
node<_Ty>* __node = new node<_Ty>(value,skey);
        __node->leftchild=__node->rightchild=__node->parent=null;
        __node->parent = current;
        if(current->key<__node->key) current->rightchild = __node;
        else current->leftchild = __node;
        insert_balance(__node);
    }
   
else
   
{
        
node<_Ty>* __node = new node<_Ty>(value,skey);
        __node->leftchild=__node->rightchild=__node->parent=null;
        __node->parent = root;
        root  = __node;  
        root->color = BLACK;
    }
   
++countNode;
}
template<typename _Ty>
const node<_Ty>* RBT<_Ty>::Delete(int skey)
{
   
node<_Ty>* find = search(skey);
    if(find!=null )
    {
        
node<_Ty>* _node,*_nodeParent;
        if(find->leftchild!=null&&find->rightchild!=null)
            _nodeParent = successor(find);
        else
            
_nodeParent = find;
        if(_nodeParent->leftchild!=null)  _node=_nodeParent->leftchild ;
        else _node=_nodeParent->rightchild;
                                    
        _node->parent = _nodeParent->parent;
        
        if(_nodeParent->parent==null) root = _node;
        else if(_nodeParent == (_nodeParent->parent)->leftchild)
            (_nodeParent->parent)->leftchild = _node;
        else (_nodeParent->parent)->rightchild = _node;
        
        if(find!=_nodeParent)
        {
            
find->data = _nodeParent->data;
            find->key = _nodeParent->key;
        }
        
--countNode;
        if(_node->color==BLACK)
        delete_balance(_node);
        return _nodeParent;
    }
   
else return 0;
}
//     LeftRotate  and  RightRotate
template<typename _Ty>
void RBT<_Ty>::LeftRotate(node<_Ty>* __parent,node<_Ty>* child)
{
   
__parent->rightchild = child->leftchild;
    (child->leftchild)->parent = __parent;
    child->parent = __parent->parent;
    if(__parent->parent==null)  root = child;
    else if((__parent->parent)->leftchild==__parent)
        (__parent->parent)->leftchild = child;
    else
        
(__parent->parent)->rightchild = child;
    child->leftchild = __parent;
    __parent->parent = child;
}
template<typename _Ty>
void RBT<_Ty>::RightRotate(node<_Ty>* __parent,node<_Ty>* child)
{
   
__parent->leftchild = child->rightchild;
    (child->rightchild)->parent = __parent;
    child->parent = __parent->parent;
    if(__parent->parent==null) root = child;
    else if((__parent->parent)->leftchild==__parent)
        (__parent->parent)->leftchild = child;
    else
        
(__parent->parent)->rightchild = child;
    child->rightchild = __parent;
    __parent->parent = child;
}
//       insert_balance  and  delete_balance
template<typename _Ty>
void RBT<_Ty>::insert_balance(node<_Ty>* current)
{   
   
for(node<_Ty>* cParent=current->parent; cParent->color==RED; )
    {
        
if(cParent==cParent->parent->leftchild)
        {
        
// case 1
            
if(cParent->parent->rightchild->color==RED)
            {
            
cParent->color = BLACK;
            cParent->parent->rightchild->color = BLACK;
            cParent->parent->color = RED;
            current = cParent->parent;
            }
            
else
            
{
        
// case 2
            
if(current== cParent->rightchild)
                LeftRotate(cParent,current);
        // case 3
            
cParent->color = BLACK;
            cParent->parent->color = RED;
            RightRotate(cParent->parent,cParent);
            }
        }
        
else
        
{
            
if(cParent->parent->leftchild->color==RED)
            {
               
cParent->color = BLACK;
                cParent->parent->leftchild->color = BLACK;
                cParent->parent->color = RED;
                current = cParent->parent;
                }
            
else
            
{
               
if(current==cParent->leftchild)
                    RightRotate(cParent,current);
                cParent->color =BLACK;
                cParent->parent->color = RED;
                LeftRotate(cParent->parent,cParent);
                }
        }
    }
   
root->color = BLACK;
}
template<typename _Ty>
void RBT<_Ty>::delete_balance(node<_Ty>* current)
{
   
for(node<_Ty>* cParent=current->parent;
        current!=null&&current->color==BLACK;)
    {
        
if(current==cParent->leftchild)
        {
            
if(cParent->rightchild->color==RED)
            {
               
LeftRotate(cParent,cParent->rightchild);
                cParent->color = RED;
                cParent->rightchild->color = BLACK;
            }
            
else
            
{
               
if(cParent->rightchild->leftchild->color==BLACK&&
                    cParent->rightchild->rightchild->color==BLACK)
                {
                    
current = cParent;
                    cParent->rightchild->color = RED;
                }
               
else if(cParent->rightchild->leftchild->color==RED)
                {
                    
RightRotate(cParent->rightchild,cParent->rightchild->leftchild);
                    cParent->rightchild->color = BLACK;
                    cParent->rightchild->rightchild->color = RED;
                }
               
LeftRotate(cParent,cParent->rightchild);
                current = root;
            }
        }
        
else
        
{
            
if(cParent->leftchild->color==RED)
            {
               
RightRotate(cParent,cParent->leftchild);
                cParent->color = RED;
                cParent->leftchild->color = BLACK;
            }
            
else
            
{
               
if(cParent->leftchild->rightchild->color==BLACK&&
                    cParent->leftchild->leftchild->color==BLACK)
                {
                    
current = cParent;
                    cParent->leftchild->color = RED;
                }
               
else if(cParent->leftchild->rightchild->color==RED)
                {
                    
RightRotate(cParent->leftchild,cParent->leftchild->rightchild);
                    cParent->leftchild->color = BLACK;
                    cParent->leftchild->leftchild->color = RED;
                }
               
LeftRotate(cParent,cParent->leftchild);
                current = root;
                }
            }
    }
   
current->color = BLACK;
}
搜索更多相关主题的帖子: 飞燕 software yzfy 
2008-05-24 19:25
aipb2007
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越来越厉害了,恭喜!

Fight  to win  or  die...
2008-05-25 02:42
justtest
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红黑树实现
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>

typedef struct node
{
    int data;
    int color;
    struct node * parent;
    struct node * left;
    struct node * right;
}node_t, *node_tp;


static node_tp rb_tab_p = NULL;


void free_tab_s(node_tp node)
{
    if(!node)
        return;
    free_tab_s(node->left);
    free_tab_s(node->right);
    printf("\nfree data=%d", node->data);
    free(node);    
}

void free_tab(void)
{
    free_tab_s(rb_tab_p);
}



int node_depth(node_tp node, int * blance)
{
    int l,r;
    if(!node || !node->left || !node->right)
        return 0;
    l = node_depth(node->left, blance);
    r = node_depth(node->right,blance);

    if(l - r > 1 || l - r < -1)
    {
        printf("\n data=%d depth=%d", node->data, r - l);
        if(blance && *blance*(*blance) < (r - l)*(r-l))
            *blance = r - l;
    }
    return (l > r? l: r) + 1;
}

int travesal_mid_s(node_tp node)
{
    int l,r,depth = node_depth(node,NULL);
    if(!node || !node->left || !node->right)
        return 0;
    l = travesal_mid_s(node->left );
    printf(" %d(%d, %d) ", node->data, node->color, depth);
    r = travesal_mid_s(node->right);    
    return l + r + 1;
}

void travesal_mid(void)
{
    int count, depth, blance = 0;
    depth = node_depth(rb_tab_p, &blance);
    printf("\n---------tree is-------------\n");
    count = travesal_mid_s(rb_tab_p);
    printf("\n-----count=%d--depth=%d--blance=%d----------", count, depth, blance);
}

node_tp find_node(node_tp node, int data)
{
    if(!node || !node->left || !node->right)
        return node;
    else if(node->data > data)
        return find_node(node->left, data);
    else if(node->data < data)
        return find_node(node->right, data);
    else
        return node;
}

node_tp max_node(node_tp node)
{
    if(!node || !node->right || !node->right->right)
        return node;
    return max_node(node->right);
}

void init_node(node_tp node, int data, int color)
{
    if(!node)
        return;
    node->data = data;
    node->color = color;
    node->parent = node->left = node->right = NULL;
}

void left_rotate(node_tp node)
{
    node_tp p;
    int itmp;
    if(node && node->right)
    {
        if(node->right->color == -1 )
            node->right->right->color = -1;
        itmp = node->color;
        node->color = node->right->color;
        node->right->color = itmp;

        p = node->right;
        node->right = p->left;
        p->left = node;
    
        p->parent = node->parent;
        if(!p->parent)
            rb_tab_p = p;
        else
        {
            if(p->parent->left == node)
                p->parent->left = p;
            else
                p->parent->right = p;
        }
        node->parent = p;
        if(node->right)
            node->right->parent = node;
    }
}


void right_rotate(node_tp node)
{
    node_tp p;
    int itmp;
    if(node && node->left)
    {
        if(node->left->color == -1)
            node->left->left->color = -1;
                itmp = node->color;
                node->color = node->left->color;
                node->left->color = itmp;

        p = node->left;
        node->left = p->right;
        p->right = node;

        p->parent = node->parent;
        if(!p->parent)
            rb_tab_p = p;
        else
        {
            if(p->parent->left == node)
                p->parent->left = p;
            else
                p->parent->right = p;
        }
        node->parent = p;
        if(node->left)
            node->left->parent = node;
    }

}


void left_right_rotate(node_tp node)
{
    node_tp p;
    int itmp;
    if(node && node->left && node->left->right)
    {
                itmp = node->color;
                node->color = node->left->right->color;
                node->left->right->color = itmp;
        node->color = node->left->color;

        p = node->left->right;
        node->left->right = p->left;
        p->left = node->left;
        
        node->left = p->right;
        p->right = node;    

        p->parent = node->parent;
        if(!p->parent)
            rb_tab_p = p;
        else
        {
            if(p->parent->left == node)
                p->parent->left = p;
            else
                p->parent->right = p;
        }
        p->left->parent = p;
        p->right->parent = p;
        if(p->left->right)
            p->left->right->parent = p->left;
        if(p->right->left)
            p->right->left->parent = p->right;

    }
}

void right_left_rotate(node_tp node)
{
    node_tp p;
    int itmp;
    if(node && node->right && node->right->left)
    {
                itmp = node->color;
                node->color = node->right->left->color;
                node->right->left->color = itmp;
        node->color = node->right->color;

        p = node->right->left;
        node->right->left = p->right;
        p->right = node->right;

        node->right = p->left;
        p->left = node;

        p->parent = node->parent;
        if(!p->parent)
            rb_tab_p = p;
        else
        {
            if(p->parent->left == node)
                p->parent->left = p;
            else
                p->parent->right = p;
        }
        p->left->parent = p;
        p->right->parent = p;
        if(p->left->right)
            p->left->right->parent = p->left;
        if(p->right->left)
            p->right->left->parent = p->right;

    }
}

int insert_rotate_type(node_tp node)
{
    if(node && node->parent->right == node && node->parent->parent->right ==node->parent)
        return -1;
    else if(node && node->parent->left == node && node->parent->parent->left ==node->parent)
        return 1;
    else if(node && node->parent->right == node && node->parent->parent->left ==node->parent)
        return -2;
    else if(node && node->parent->left == node && node->parent->parent->right ==node->parent)
        return 2;
    else
        return 0;

}


void rb_rotate(node_tp node, int type)
{
    switch(type)
    {
        case -1:
            left_rotate(node);
            break;
        case 1:
            right_rotate(node);
            break;
        case -2:
            left_right_rotate(node);
            break;
        case 2:
            right_left_rotate(node);
            break;
        default:
            break;
    }
}

void insert_rb_rotate(node_tp node)
{
    printf("\n11");
    rb_rotate(node->parent->parent, insert_rotate_type(node));
}

void insert_color_adjust(node_tp node)
{
    node_tp p;
    if(!node)
        return;    
    else if(!node->parent)
    {
        node->color = -1;
        return;
    }

    if(node->color == 1 && node->parent->color == 1)
        {
              p = node->parent->parent;
              if(p->left->color == p->right->color)
               {
                       p->left->color = p->right->color = -1;
                       p->color = 1;
                       node = p;
            insert_color_adjust(node);
               }
        else
                 insert_rb_rotate(node);

    }
}


int insert_node_s(node_tp node, int data)
{
    node_tp cur_p, p;
    cur_p = find_node(node, data);
    if(cur_p && cur_p->left && cur_p->right)
        return -1;

    if(!cur_p)
    {
        cur_p = (node_tp)malloc(sizeof(node_t));
        assert(cur_p != NULL);
        init_node(cur_p, data, -1);
        rb_tab_p = cur_p;
    }    

    p = (node_tp)malloc(sizeof(node_t));
    assert(p != NULL);
    init_node(p, 0,-1);
    cur_p->left = p;
    p->parent = cur_p;

    p = (node_tp)malloc(sizeof(node_t));
    assert(p != NULL);
    init_node(p, 0,-1);
    cur_p->right = p;
    p->parent = cur_p;
    
    cur_p->data = data;
    cur_p->color = 1;
        
    insert_color_adjust(cur_p);
    return 0;    
}

int insert_node(int data)
{
    return insert_node_s(rb_tab_p, data);
}


int del_rotate_type(node_tp black_p)
{
    node_tp parent_p, brother_p;
    if(black_p && black_p->parent)
    {
            parent_p = black_p->parent;
                if(parent_p->left == black_p)
                    brother_p = parent_p->right;
            else
                    brother_p = parent_p->left;
    
    if(brother_p->color == 1 && brother_p == parent_p->right)
                   return -1;
        else if(brother_p->color == 1 && brother_p == parent_p->left)
                return 1;
        else if(brother_p->color == -1 && brother_p == parent_p->right &&  brother_p->right->color == 1)
                return -1;
        else if(brother_p->color == -1 && brother_p == parent_p->left &&  brother_p->left->color == 1)
                return 1;
        else if(brother_p->color == -1 && brother_p == parent_p->right && brother_p->left->color == 1 && brother_p->right->color == -1)
                return 2;
        else if(brother_p->color == -1 && brother_p == parent_p->left && brother_p->left->color == -1 && brother_p->right->color == 1)
                return -2;
    }
    return 0;
}

void del_rb_rotate(node_tp node)
{
     rb_rotate(node->parent, del_rotate_type(node));
}


void del_color_adjust(node_tp black_p)
{
    node_tp parent_p, brother_p;
    if(!black_p)
        return;
    else if(black_p == rb_tab_p || black_p->color == 1)
    {
        black_p->color = -1;
        return;
    }
    parent_p = black_p->parent;
    if(parent_p->left == black_p)
        brother_p = parent_p->right;
    else
        brother_p = parent_p->left;

    if(brother_p->color == -1 && brother_p->left->color == -1 && brother_p->right->color == -1)
    {
        brother_p->color = 1;
        black_p = black_p->parent;
    }
    else if(brother_p->color == 1)
    {
        del_rb_rotate(black_p);
    }
    else
    {
        del_rb_rotate(black_p);
        black_p = NULL;
    }
    del_color_adjust(black_p);
            
}

int del_node_s(node_tp node, int data)
{
    node_tp pre_p, cur_p, black_p = NULL;
    cur_p = find_node(node, data);
    if(!cur_p || !cur_p->left || !cur_p->right)
        return -1;
    
    if(!cur_p->left->left)
    {
        if(cur_p->color == -1)
            black_p = cur_p->right;

        if(!cur_p->parent)
        {
            rb_tab_p = cur_p->right;
            rb_tab_p->parent = NULL;
        }
        else
        {
            if(cur_p->parent->left == cur_p)
                cur_p->parent->left = cur_p->right;
            else
                cur_p->parent->right = cur_p->right;
            cur_p->right->parent = cur_p->parent;
        }
        printf("\nfree data=%d", cur_p->data);
        free(cur_p->left);
        free(cur_p);
        if(!rb_tab_p->left || !rb_tab_p->right)
        {
            free(rb_tab_p);
            rb_tab_p = NULL;
            black_p = NULL;
        }
    }
    else
    {
        pre_p = max_node(cur_p->left);
        if(pre_p->color == -1)    
            black_p = pre_p->left;
        cur_p->data = pre_p->data;

        if(pre_p->parent->left == pre_p)
            pre_p->parent->left = pre_p->left;
        else
            pre_p->parent->right = pre_p->left;
        pre_p->left->parent = pre_p->parent;
    
        printf("\nfree data=%d", pre_p->data);
        free(pre_p->right);
        free(pre_p);
    }
    
    del_color_adjust(black_p);
    return 0;

}

int del_node(int data)
{
    return del_node_s(rb_tab_p, data);
}

void input_data(void)
{

    char str[20];
    int data;
    int ret;
    int i;
    for(i = 0; i < 255; i++)
        insert_node(i);
    
    
    while(1)
    {

/*        printf("\n\nenter data=");
        scanf("%s", str);
        if(strncmp(str, "ok", 2) == 0)
            break;
        ret = sscanf(str, "%d", &data);
        if(ret == 1)
        {
            travesal_mid();
            ret = insert_node(data);
            if(ret == 0)
                printf("\ninsert %d successful", data);
            travesal_mid();
        }

*/

                travesal_mid();
                printf("\n\ndel data=");
                scanf("%s", str);
                if(strncmp(str, "ok", 2) == 0)
                        break;
                ret = sscanf(str, "%d", &data);
                if(ret == 1)
                {
                        ret = del_node(data);
                        if(ret == 0)
                                printf("\ndel %d successful", data);
                        travesal_mid();
                }


        
    }
    free_tab();

}

int main(int argc, char **argv)
{

    input_data();


    return 0;
}
2008-07-27 10:41
中学者
Rank: 16Rank: 16Rank: 16Rank: 16
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这么老的贴都被翻出来了,佩服 - -

樱花大战,  有爱.
2008-07-28 00:16
bianchengwa
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强 好长的源代码 不过那位能指教一下 什么是红黑树啊
2008-07-30 09:35
快速回复:[原创]红黑树.
数据加载中...
 
   



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