將鏈表中的節點順序倒排序

利用三個額外的節點指針修改鏈表節點的指向

詳細參考Reverse函數

// 倒排鏈表節點.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include <iostream>
using namespace std;
typedef struct node
{
	int data;
	node *next;
}Node;
class SList
{
public:
	SList();
	~SList();
	void Print();
	void CreateList(int *start,int *end);
	void Reverse();
private:
	Node *head;
};
SList::SList()
{
	head=NULL;
}
SList::~SList()
{
	Node *p;
	while(head!=NULL)
	{
		p=head;
		head=head->next;
		delete p;
	}
}
void SList::CreateList(int *start,int *end)
{
	head=new Node;
	head->next=NULL;
	Node *ptmp;
	head->data=*start;
	if(start==end)
		return;
	else
		start++;
	while(start!=end)
	{
		ptmp=new Node;
		ptmp->next=head;
		ptmp->data=*start;
		head=ptmp;
		start++;
	}

}
void SList::Reverse()
{
	Node *first,*mid,*last;
	first=head;
	mid=head->next;
	while(mid!=NULL)
	{
		last=mid->next;
		mid->next=first;
		first=mid;
		mid=last;
	}
	head->next=NULL;
	head=first;
}
void SList::Print()
{
	Node *p=head;
	int i=1;
	while(p!=NULL)
	{
		cout<<"第"<<i<<"個節點："<<p->data<<endl;
		p=p->next;
		i++;
	}
}

int _tmain(int argc, _TCHAR* argv[])
{
	SList list;
	int arr[]={10,9,8,7,6,5,4,3,2,1};
	list.CreateList(arr,arr+10);
	list.Print();
	list.Reverse();
	cout<<"逆序後："<<endl;
	list.Print();
	system("pause");
	return 0;
}