其实这个比较简单,对于求深度的时候:用一个开关flag来标记是否要深度+1;文章来源:https://www.toymoban.com/news/detail-736274.html
对于求叶子结点的个数的时候:用num1和num2来标记,如果有左子结点,那么在每个循环中num1置1;同理,若有右子结点,在每个循环中num2置1;综上,每个循环中只要num1和num2 都是0的时候,说明没有子结点,则可以判断是叶子结点,最终答案ans++即可文章来源地址https://www.toymoban.com/news/detail-736274.html
/**
*
* Althor: Hacker Hao
* Create: 2023.11.1
*
*/
#include <bits/stdc++.h>
using namespace std;
#define ElemType int
#define MAXSIZE 200
typedef struct BiTNode
{
ElemType data;
struct BiTNode* lchild, * rchild;
}BTNode;
BTNode* Create(int val)
{
BTNode* node = (BTNode*)malloc(sizeof(BTNode));
node->data = val;
node->rchild = NULL;
node->lchild = NULL;
return node;
}
void PreOrder(BTNode* root)
{
int cnt = 0, ans = 0;
int flag = 0;
BTNode* stack[MAXSIZE], * p;
int top = 0;
if (!root)
{
cout << "ERROR" << endl;
exit(0);
}
stack[top] = root;
while (top != -1)
{
int num1 = 0, num2 = 0;
p = stack[top];
top--;
cout << p->data << " ";
if (p->rchild)
{
stack[++top] = p->rchild;
cnt++;
flag = 1;
num1 = 1;
}
if (p->lchild)
{
stack[++top] = p->lchild;
num2 = 1;
if (flag == 0)
{
cnt++;
}
}
if (num1 == 0 && num2 == 0)
ans++;
}
cout << endl;
cout << "深度为:" << cnt << endl;
cout << "叶子节点为:" << ans << endl;
}
int main()
{
cin.tie(0), cout.tie(0);
BTNode* A = Create(1);
BTNode* B = Create(2);
BTNode* C = Create(3);
BTNode* D = Create(4);
BTNode* E = Create(5);
BTNode* F = Create(6);
BTNode* G = Create(7);
BTNode* H = Create(8);
A->lchild = B;
A->rchild = C;
B->lchild = D;
B->rchild = E;
E->lchild = G;
E->rchild = H;
C->rchild = F;
cout << "前序遍历结果是:";
PreOrder(A);
cout << endl;
return 0;
}
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