程序填空题：LL Rotation

The function `LL_Rotation` is to do right-left rotation to the trouble-finder tree node `T` in an AVL tree.

```c++
typedef struct TNode *Tree;
struct TNode {
int key, h;
Tree left, right;
};

Tree LL_Rotation( Tree T )
{
Tree L;

L = T->left;
@@[T->left](2) = L->right;
L->right = T;
/* Update heights */
T->h = maxh(Height(T->left), Height(T->right)) + 1;
L->h = @@[maxh(Height(L->left), T->h) + 1](2);

return L;
}
```





答案：
第1空：T->left

第2空：maxh(Height(L->left), T->h) + 1