In function 'void insert_non_full(BTreeNode*, int)': D:\VScode-c\.vscode\studyCode\BTree.cpp:45:51: error: 'split_child' was not declared in this scope split_child(node, i, node->children[i]);
时间: 2024-04-17 17:24:52 浏览: 12
我很抱歉,我在之前的回答中遗漏了`split_child`函数的声明。请在代码中添加以下函数声明:
```c
void splitChild(BTreeNode** parent, int index, BTreeNode* child);
```
将其放置在`insert`函数之前或者在需要调用`splitChild`函数的地方之前。
这样,编译器就能正确识别`split_child`函数了。对应的代码行应该修改为:
```c
splitChild(&node, i, node->children[i]);
```
这样就能正确调用`splitChild`函数了。再次抱歉给您带来的困扰。
相关问题
按照教材中关于二叉树的抽象数据类型定义,采用二叉链表存储结构,编程实现二叉树的各种基本操作,并通过主函数调用,简单测试各基本函数的正确性。 比如:二叉树的基本操作可包括: (1) void InitBT( BTreeNode *&BT ) //初始化二叉树BT (2) void CreateBT( BTreeNode *&BT, char *a ) //根据字符串a所给出二叉树的描述,建立二叉链表存储结构 (3) int EmptyBT( BTreeNode *BT) //检查二叉树BT是否为空,空返回1,否则返回0 (4) int DepthBT( BTreeNode *BT) //求二叉树BT的深度并返回该值 (5) int NodeCount(BTreeNode *BT) //求二叉树BT的总结点个数 (6) void PreOrder( BTreeNode *BT) //先序遍历递归算法 (7) void InOrder( BTreeNode *BT) //中序遍历递归算法 (8) void PostOrder( BTreeNode *BT) //后序遍历递归算法 (9) int FindBT( BTreeNode *BT, ElemType x) //查找二叉树BT中值为x的结点,若查找成功返回1,否则返回0 (10)void DestroyBT( BTreeNode *&BT ) //销毁二叉树BT
以下是二叉树的基本操作实现:
```
#include <stdio.h>
#include <stdlib.h>
typedef int ElemType;
typedef struct BTreeNode{
ElemType data;
struct BTreeNode *left;
struct BTreeNode *right;
}BTreeNode, *BTree;
void InitBT(BTree &BT)
{
BT = NULL;
}
void CreateBT(BTree &BT, char *a)
{
if(*a == '\0')
return;
if(*a == '#')
{
BT = NULL;
}
else
{
BT = (BTreeNode *)malloc(sizeof(BTreeNode));
BT->data = *a;
CreateBT(BT->left, a + 1);
CreateBT(BT->right, a + 2);
}
}
int EmptyBT(BTree BT)
{
if(BT == NULL)
return 1;
else
return 0;
}
int DepthBT(BTree BT)
{
if(BT == NULL)
return 0;
else
{
int left_depth = DepthBT(BT->left);
int right_depth = DepthBT(BT->right);
return (left_depth > right_depth) ? (left_depth + 1) : (right_depth + 1);
}
}
int NodeCount(BTree BT)
{
if(BT == NULL)
return 0;
else
return (NodeCount(BT->left) + NodeCount(BT->right) + 1);
}
void PreOrder(BTree BT)
{
if(BT)
{
printf("%c ", BT->data);
PreOrder(BT->left);
PreOrder(BT->right);
}
}
void InOrder(BTree BT)
{
if(BT)
{
InOrder(BT->left);
printf("%c ", BT->data);
InOrder(BT->right);
}
}
void PostOrder(BTree BT)
{
if(BT)
{
PostOrder(BT->left);
PostOrder(BT->right);
printf("%c ", BT->data);
}
}
int FindBT(BTree BT, ElemType x)
{
if(BT == NULL)
return 0;
else if(BT->data == x)
return 1;
else
return (FindBT(BT->left, x) || FindBT(BT->right, x));
}
void DestroyBT(BTree &BT)
{
if(BT)
{
DestroyBT(BT->left);
DestroyBT(BT->right);
free(BT);
BT = NULL;
}
}
```
以下是一个简单的测试:
```
int main()
{
BTree BT;
char a[] = "AB##C##D#E##";
CreateBT(BT, a);
printf("PreOrder: ");
PreOrder(BT);
printf("\n");
printf("InOrder: ");
InOrder(BT);
printf("\n");
printf("PostOrder: ");
PostOrder(BT);
printf("\n");
printf("NodeCount: %d\n", NodeCount(BT));
printf("Depth: %d\n", DepthBT(BT));
printf("Find 'B': %d\n", FindBT(BT, 'B'));
printf("Find 'F': %d\n", FindBT(BT, 'F'));
DestroyBT(BT);
return 0;
}
```
请帮我分析这段代码有何错误:double b_tree_search_time(int* arr, int n, int t) { BTreeNode* root = b_tree_node_init(t); clock_t start = clock(); for (int i = 0; i < n; i++) { root = b_tree_insert(root, arr[i], t); } for (int i = 0; i < n; i++) { b_tree_search(root, arr[i]); } clock_t end = clock(); double elapsed_time = (double) (end - start) / CLOCKS_PER_SEC; b_tree_free(root, t); return elapsed_time; }
这段代码看起来是用来测试 B 树搜索时间的,但是存在一个问题。
在 for 循环中,每次插入数据后都会更新根节点,这会导致树的结构不稳定,可能会导致搜索时间的不准确性。应该修改为:
```c++
BTreeNode* root = b_tree_node_init(t);
for (int i = 0; i < n; i++) {
b_tree_insert(root, arr[i], t);
}
for (int i = 0; i < n; i++) {
b_tree_search(root, arr[i]);
}
b_tree_free(root, t);
```
另外,代码中没有判断根节点是否为空,如果 arr 数组为空,会导致程序异常。应该添加以下判断:
```c++
if (arr == NULL || n == 0) {
return 0;
}
```
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