用C++写一个红黑树左旋代码

这里是一个C语言实现红黑树左旋的例子：void LeftRotate(struct node *x)
{
struct node *y = x->right;
x->right = y->left;
if (y->left != NULL)
y->left->parent = x;
y->parent = x->parent;
if (x->parent == NULL)
root = y;
else if (x == x->parent->left)
x->parent->left = y;
else
x->parent->right = y;
y->left = x;
x->parent = y;
}

相关问题

红黑树左旋代码C++

红黑树的左旋操作是平衡红黑树的一种操作，它通过调整节点的指针关系来保持红黑树的平衡性。关于红黑树左旋的代码实现，你可以参考以下示例代码：

void leftRotate(rbtree* tree, rbtree_node* node) {
  // 将node的右子节点设为pivot
  rbtree_node* pivot = node->right;
  
  // 将pivot的左子节点设为node的右子节点
  node->right = pivot->left;
  if (pivot->left != tree->nil) {
    pivot->left->parent = node;
  }
  
  // 将pivot的父节点设为node的父节点
  pivot->parent = node->parent;
  if (node->parent == tree->nil) {
    tree->root = pivot;
  } else if (node == node->parent->left) {
    node->parent->left = pivot;
  } else {
    node->parent->right = pivot;
  }
  
  // 将node设为pivot的左子节点
  pivot->left = node;
  node->parent = pivot;
}

这段代码实现了红黑树的左旋操作，它会将指定节点的右子节点作为旋转后的根节点，同时调整相关节点的指针关系。需要注意的是，这是一个简化的代码示例，实际红黑树的左旋操作可能还需要进行其他额外的处理。

希望这段代码能够帮助你理解红黑树左旋的实现。如果还有其他问题，请随时提问。

运行C++写一个红黑树

抱歉，我是语言模型AI，不支持运行代码，但我可以给你提供一个基本的红黑树的实现。

#include<stdio.h>
#include<stdlib.h>
#include<stdbool.h>

enum Color {RED, BLACK};

typedef struct Node {
    int data;
    enum Color color;
    struct Node* left;
    struct Node* right;
    struct Node* parent;
} Node;

Node* createNode(int data) {
    Node* newNode = (Node*)malloc(sizeof(Node));
    newNode->data = data;
    newNode->color = RED;
    newNode->left = NULL;
    newNode->right = NULL;
    newNode->parent = NULL;
    return newNode;
}

void rotateLeft(Node** root, Node* node) {
    Node* right = node->right;
    node->right = right->left;
    if (node->right != NULL)
        node->right->parent = node;
    right->parent = node->parent;
    if (node->parent == NULL)
        *root = right;
    else if (node == node->parent->left)
        node->parent->left = right;
    else
        node->parent->right = right;
    right->left = node;
    node->parent = right;
}

void rotateRight(Node** root, Node* node) {
    Node* left = node->left;
    node->left = left->right;
    if (node->left != NULL)
        node->left->parent = node;
    left->parent = node->parent;
    if (node->parent == NULL)
        *root = left;
    else if (node == node->parent->left)
        node->parent->left = left;
    else
        node->parent->right = left;
    left->right = node;
    node->parent = left;
}

void fixViolation(Node** root, Node* node) {
    Node* parent = NULL;
    Node* grandparent = NULL;
    while ((node != *root) && (node->color != BLACK) && (node->parent->color == RED)) {
        parent = node->parent;
        grandparent = node->parent->parent;
        if (parent == grandparent->left) {
            Node* uncle = grandparent->right;
            if ((uncle != NULL) && (uncle->color == RED)) {
                grandparent->color = RED;
                parent->color = BLACK;
                uncle->color = BLACK;
                node = grandparent;
            } else {
                if (node == parent->right) {
                    rotateLeft(root, parent);
                    node = parent;
                    parent = node->parent;
                }
                rotateRight(root, grandparent);
                bool temp = parent->color;
                parent->color = grandparent->color;
                grandparent->color = temp;
                node = parent;
            }
        } else {
            Node* uncle = grandparent->left;
            if ((uncle != NULL) && (uncle->color == RED)) {
                grandparent->color = RED;
                parent->color = BLACK;
                uncle->color = BLACK;
                node = grandparent;
            } else {
                if (node == parent->left) {
                    rotateRight(root, parent);
                    node = parent;
                    parent = node->parent;
                }
                rotateLeft(root, grandparent);
                bool temp = parent->color;
                parent->color = grandparent->color;
                grandparent->color = temp;
                node = parent;
            }
        }
    }
    (*root)->color = BLACK;
}

void insert(Node** root, int data) {
    Node* newNode = createNode(data);
    Node* current = *root;
    Node* parent = NULL;
    while (current != NULL) {
        parent = current;
        if (data < current->data)
            current = current->left;
        else
            current = current->right;
    }
    newNode->parent = parent;
    if (parent == NULL)
        *root = newNode;
    else if (data < parent->data)
        parent->left = newNode;
    else
        parent->right = newNode;
    fixViolation(root, newNode);
}

void inorder(Node* root) {
    if (root == NULL)
        return;
    inorder(root->left);
    printf("%d ", root->data);
    inorder(root->right);
}

int main() {
    Node* root = NULL;
    int n, data;
    printf("Enter number of nodes: ");
    scanf("%d", &n);
    for (int i = 0; i < n; i++) {
        printf("Enter node data: ");
        scanf("%d", &data);
        insert(&root, data);
        printf("Inorder traversal: ");
        inorder(root);
        printf("\n");
    }
    return 0;
}

这个实现中包含了红黑树的基本操作，如左旋、右旋和修复违规等。您可以将其保存为一个`.c`文件并使用C编译器进行编译和运行。