第一、树的构建
定义树结构
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struct BTNode {
char data;
struct BTNode* pLChild;
struct BTNode* pRChild;
};
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静态方式创建一个简单的二叉树
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struct BTNode* create_list() {
struct BTNode* pA = (struct BTNode*)malloc(sizeof(BTNode));
struct BTNode* pB = (struct BTNode*)malloc(sizeof(BTNode));
struct BTNode* pC = (struct BTNode*)malloc(sizeof(BTNode));
struct BTNode* pD = (struct BTNode*)malloc(sizeof(BTNode));
struct BTNode* pE = (struct BTNode*)malloc(sizeof(BTNode));
pA->data = 'A';
pB->data = 'B';
pC->data = 'C';
pD->data = 'D';
pE->data = 'E';
pA->pLChild = pB;
pA->pRChild = pC;
pB->pLChild = pB->pRChild = NULL;
pC->pLChild = pD;
pC->pRChild = NULL;
pD->pLChild = NULL;
pD->pRChild = pE;
pE->pLChild = pE->pRChild = NULL;
return pA;
}
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第二、树的三种遍历
1. 先序遍历
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//先序输出
void PreTravense(struct BTNode* pHead) {
if (NULL!= pHead)
{
printf("%c", pHead->data);
if (NULL!= pHead->pLChild)
{
PreTravense(pHead->pLChild);
}
if (NULL != pHead->pRChild)
{
PreTravense(pHead->pRChild);
}
}
}
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2. 中序遍历
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//中序输出
void InTravense(struct BTNode* pHead) {
if (NULL != pHead)
{
if (NULL != pHead->pLChild)
{
PreTravense(pHead->pLChild);
}
printf("%c", pHead->data);
if (NULL != pHead->pRChild)
{
PreTravense(pHead->pRChild);
}
}
}
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3.后续遍历
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//后序输出
void PostTravense(struct BTNode* pHead) {
if (NULL != pHead)
{
if (NULL != pHead->pLChild)
{
PreTravense(pHead->pLChild);
}
if (NULL != pHead->pRChild)
{
PreTravense(pHead->pRChild);
}
printf("%c", pHead->data);
}
}
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第三、最终运行测试
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int main() {
printf("创建序列\n");
struct BTNode* pHead = create_list();
printf("先序输出\n");
PreTravense(pHead);
printf("中序输出\n");
InTravense(pHead);
printf("后序输出\n");
PostTravense(pHead);
return 0;
}
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以上这篇c语言_构建一个静态二叉树实现方法就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持服务器之家。