确定一个二叉树,用链式存储结构方法存储
#ifndef BiTree_H
#define BiTree_H
struct BiNode
{
char data;
BiNode*lchild,*rchild;
};
class BiTree
{
public:
BiTree(){root=Creat(root);}
~BiTree(){Release(root);}
void PreOrder(){PreOrder(root);}
void InOrder(){InOrder(root);}
void PostOrder(){PostOrder(root);}
private:
BiNode*root;
BiNode*Creat(BiNode*bt);
void Release(BiNode*bt);
void PreOrder(BiNode*bt);
void InOrder(BiNode*bt);
void PostOrder(BiNode*bt);
};
#endif
#include<iostream>
using namespace std;
#include"Bitree.h"
BiNode*BiTree::Creat(BiNode*bt) //chuangjianerchash
{
char ch;
cout<<"请输入创建一棵二叉树的结点数据"<<endl;
cin>>ch;
if(ch=='#')
return NULL;
else
{
bt=new BiNode;
bt->data=ch;
bt->lchild=Creat(bt->lchild);
bt->rchild=Creat(bt->rchild);
}
return bt;
}
void BiTree::Release(BiNode*bt)
{
if(bt!=NULL)
{
Release(bt->lchild);
Release(bt->rchild);
delete bt;
}
}
void BiTree::PreOrder(BiNode*bt)
{
if(bt==NULL)return;
else
{
cout<<bt->data<<" ";
PreOrder(bt->lchild);
PreOrder(bt->rchild);
}
}
void BiTree::InOrder(BiNode*bt)
{
if(bt==NULL)return;
else
{
InOrder(bt->lchild);
cout<<bt->data<<" ";
InOrder(bt->rchild);
}
}
void BiTree::PostOrder(BiNode*bt)
{
if(bt==NULL)return;
else
{
PostOrder(bt->lchild);
PostOrder(bt->rchild);
cout<<bt->data<<" ";
}
}
#include<iostream>
using namespace std;
#include"Bitree.h"
int main()
{
BiTree T;
cout<<"前序遍历"<<endl;
T.PreOrder();
cout<<endl;
cout<<"中序遍历"<<endl;
T.InOrder();
cout<<endl;
cout<<"后序遍历"<<endl;
T.PostOrder();
cout<<endl;
return 0;
}