概述
#include
<
stdio.h
>
#include
<
malloc.h
>
typedef
struct
bnode
...
{
char data; struct bnode *left, *right;
}
btree;btree
*
creat()
...
{ btree *t; char p; p = getchar(); if (p == '#') return NULL; else
...{ t = (btree *)malloc(sizeof(btree)); t->data = p; t->left = creat(); t->right = creat(); return t;
}}
void
preorder(btree
*
t)
...
{ if (t != NULL) ...{ printf("%3c", t->data); preorder(t->left); preorder(t->right); }}
void
inorder(btree
*
t)
...
{ if (t != NULL) ...{ inorder(t->left); printf("%3c", t->data); inorder(t->right); }}
void
postorder(btree
*
t)
...
{ if (t != NULL) ...{ postorder(t->left); postorder(t->right); printf("%3c", t->data); }}
int
m
=
0
;
int
leaves(btree
*
t)
...
{ if (t != NULL) ...{ if (t->left == NULL && t->right == NULL) m++; else ...{ leaves(t->left); leaves(t->right); } } return m;}
int
depth(btree
*
t)
...
{ int dep1, dep2; if (t == NULL) return 0; else ...{ dep1 = depth(t->left); dep2 = depth(t->right); return (dep1 > dep2 ? dep1 + 1 : dep2 + 1); }}
int
main()
...
{ printf("输入创建二叉树的字符 "); btree *tree_1 = creat(); printf("先序遍历 "); preorder(tree_1); printf(" "); printf("中序遍历 "); inorder(tree_1); printf(" "); printf("后序遍历 "); postorder(tree_1); printf(" "); int num = leaves(tree_1); printf("叶节点的个数:%d ", num); printf("二叉树的深度:%d ", depth(tree_1));}
最后
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