int BaseNode::insertNode( int n, BaseNode * pChild )
{
if (! pChild )
return -1;
if ( this == NULL || pChild == NULL )
return -1;
if ( pChild->isChild( this ) ) // assert that this isn't a circular attachment
return -1;
// grab a reference to the child, otherwise when we detach from the old parent the child
// may get deleted.
Ref rChild( pChild );
if ( pChild->m_pParent != NULL )
pChild->m_pParent->detachNode( pChild );
updateVersion();
pChild->m_pParent = this;
m_Children.insert( m_Children.begin() + n, pChild );
// notify ourselves
onAttach( pChild );
// notify the child object
pChild->onAttached();
return n;
}
void max_heapify(int array[], int length, int root)
{
int max, l, r;
while(root <= length)
{
l = lChild(root);
r = rChild(root);
if(l <= length && array[root-1] < array[l-1])
max = l;
else
max = root;
if(r <= length && array[max-1] < array[r-1])
max = r;
if(root != max)
{
exchange(&array[root-1], &array[max-1]);
root = max;
}
else
break;
}
}
/*父子（至多）三者中的大者*/
Rank ProperParent(Rank n, Rank i)
{
if (rChildValid(n, i))
{
return bigger(bigger(i, lChild(i)), rChild(i));
}
else if (lChildValid(n, i))
{
return bigger(i, lChild(i));
}
else
{
return i;
}
}
int BaseNode::attachNode( BaseNode * pChild )
{
if ( this == NULL || pChild == NULL )
return -1;
if ( pChild->isChild( this ) ) // assert that this isn't a circular attachment
return -1;
// this checks if this node is already attached to this node, if so just pretend we are attaching..
if ( this == pChild->m_pParent )
{
for(size_t i=0;i<m_Children.size();++i)
if ( m_Children[i] == pChild )
{
// notify ourselves
onAttach( pChild );
// notify the child object
pChild->onAttached();
return (int)i;
}
return -1;
}
// grab a reference to the child, otherwise when we detach from the old parent the child
// may get deleted.
Ref rChild( pChild );
if ( pChild->m_pParent != NULL )
pChild->m_pParent->detachNode( pChild );
// update the internal version number of the parent object, this is important for
// serialization reasons.
updateVersion();
pChild->m_pParent = this;
m_Children.push_back( pChild );
// notify ourselves
onAttach( pChild );
// notify the child object
pChild->onAttached();
return( m_Children.size() - 1 );
}
bool rChildValid(Rank n, Rank i)
{
return inHeap(n, rChild(i));
}