SDUTOJ 2136 数据结构实验之二叉树的建立与遍历

#include<iostream>
#include<string.h>
using namespace std;
typedef struct BiTNode
{
	char data;
	struct BiTNode *lchild,*rchild;
}BiTNode, *BiTree;
int Create(BiTree &T)
{
	char data;
	cin>>data;
	if(data==','){ T=NULL;}
	else
	{
		T=new BiTNode;
		T->data=data;
		Create(T->lchild);
		Create(T->rchild);
	}
	return 0;
}
void visit(BiTree T)
{
	if(T->data!=',')
		cout<<T->data;
}
void InOrder(BiTree T)
{
	if(T!=NULL)
	{
		InOrder(T->lchild);
		visit(T);
		InOrder(T->rchild);
	}
}
void PostOrder(BiTree T)
{
	if(T!=NULL)
	{
		PostOrder(T->lchild);
		PostOrder(T->rchild);
		visit(T);
	}
}
int count_tree(BiTree T,int &n)
{
	if(T)
	{
		if(T->lchild==NULL&&T->rchild==NULL)
			n++;
		count_tree(T->lchild,n);
		count_tree(T->rchild,n);
	}
	return n;
}
int high_tree(BiTree T)
{
	int h,left,right;
	if(!T)
	{ return 0;}
	left=high_tree(T->lchild);
	right=high_tree(T->rchild);
	h=(left>right?left:right)+1;
	return h;
}
int main()
{
	int n,a,b=0;
	BiTree T;
	Create(T);
	InOrder(T);
	cout<<"\n";
	PostOrder(T);
	cout<<"\n";
	a=count_tree(T,b);
	cout<<a<<endl;
	n=high_tree(T);
	cout<<n<<endl;
	return 0;
}