Actualizare: Eu nu pot obține „echilibrare“ la locul de muncă, pentru că nu pot obține „doAVLBalance“ să recunoască funcțiile de membru „isBalanced ()“, „isRightHeavy ()“, „isLeftHeavy“. Și eu nu știu de ce! Am încercat exemplul lui Sash (răspuns 3 -a ) exact , dar am obține „decelerația este incompatibil“ și nu am putut repara asta ... așa că am încercat o fac în felul meu ... și mi -a spus aceste funcții membre nu există, atunci când acestea fac în mod clar.
„Eroare: clasa«IntBinaryTree:.. TreeNode»nu are nici un membru«isRightHeavy»Sunt blocat după ce a încercat pentru ultimele 4 ore :( cod Actualizat mai jos, ajutor ar fi mult mai apreciat !!
Creez un șir binar de căutare pe bază de copac și trebuie să - l un „echilibrat“ copac face. Cum pot face acest lucru? * Ajutor va rog !! Mulțumesc anticipat!
BinarySearchTree.cpp:
bool IntBinaryTree::leftRotation(TreeNode *root)
{
//TreeNode *nodePtr = root; // Can use nodePtr instead of root, better?
// root, nodePtr, this->?
if(NULL == root)
{return NULL;}
TreeNode *rightOfTheRoot = root->right;
root->right = rightOfTheRoot->left;
rightOfTheRoot->left = root;
return rightOfTheRoot;
}
bool IntBinaryTree::rightRotation(TreeNode *root)
{
if(NULL == root)
{return NULL;}
TreeNode *leftOfTheRoot = root->left;
root->left = leftOfTheRoot->right;
leftOfTheRoot->right = root;
return leftOfTheRoot;
}
bool IntBinaryTree::doAVLBalance(TreeNode *root)
{
if(NULL==root)
{return NULL;}
else if(root->isBalanced()) // Don't have isBalanced
{return root;}
root->left = doAVLBalance(root->left);
root->right = doAVLBalance(root->right);
getDepth(root); //Don't have this function yet
if(root->isRightHeavy()) // Don't have isRightHeavey
{
if(root->right->isLeftheavey())
{
root->right = rightRotation(root->right);
}
root = leftRotation(root);
}
else if(root->isLeftheavey()) // Don't have isLeftHeavey
{
if(root->left->isRightHeavey())
{
root->left = leftRotation(root->left);
}
root = rightRotation(root);
}
return root;
}
void IntBinaryTree::insert(TreeNode *&nodePtr, TreeNode *&newNode)
{
if(nodePtr == NULL)
nodePtr = newNode; //Insert node
else if(newNode->value < nodePtr->value)
insert(nodePtr->left, newNode); //Search left branch
else
insert(nodePtr->right, newNode); //search right branch
}
//
// Displays the number of nodes in the Tree
int IntBinaryTree::numberNodes(TreeNode *root)
{
TreeNode *nodePtr = root;
if(root == NULL)
return 0;
int count = 1; // our actual node
if(nodePtr->left !=NULL)
{ count += numberNodes(nodePtr->left);
}
if(nodePtr->right != NULL)
{
count += numberNodes(nodePtr->right);
}
return count;
}
// Insert member function
void IntBinaryTree::insertNode(string num)
{
TreeNode *newNode; // Poitner to a new node.
// Create a new node and store num in it.
newNode = new TreeNode;
newNode->value = num;
newNode->left = newNode->right = NULL;
//Insert the node.
insert(root, newNode);
}
// More member functions, etc.
BinarySearchTree.h:
class IntBinaryTree
{
private:
struct TreeNode
{
string value; // Value in the node
TreeNode *left; // Pointer to left child node
TreeNode *right; // Pointer to right child node
};
//Private Members Functions
// Removed for shortness
void displayInOrder(TreeNode *) const;
public:
TreeNode *root;
//Constructor
IntBinaryTree()
{ root = NULL; }
//Destructor
~IntBinaryTree()
{ destroySubTree(root); }
// Binary tree Operations
void insertNode(string);
// Removed for shortness
int numberNodes(TreeNode *root);
//int balancedTree(string, int, int); // TreeBalanced
bool leftRotation(TreeNode *root);
bool rightRotation(TreeNode *root);
bool doAVLBalance(TreeNode *root); // void doAVLBalance();
bool isAVLBalanced();
int calculateAndGetAVLBalanceFactor(TreeNode *root);
int getAVLBalanceFactor()
{
TreeNode *nodePtr = root; // Okay to do this? instead of just
// left->mDepth
// right->mDepth
int leftTreeDepth = (left !=NULL) ? nodePtr->left->Depth : -1;
int rightTreeDepth = (right != NULL) ? nodePtr->right->Depth : -1;
return(leftTreeDepth - rightTreeDepth);
}
bool isRightheavey() { return (getAVLBalanceFactor() <= -2); }
bool isLeftheavey() { return (getAVLBalanceFactor() >= 2); }
bool isBalanced()
{
int balanceFactor = getAVLBalanceFactor();
return (balanceFactor >= -1 && balanceFactor <= 1);
}
int getDepth(TreeNode *root); // getDepth
void displayInOrder() const
{ displayInOrder(root); }
// Removed for shortness
};













