链表的逆置(无聊而写)

要求:就是建一个带一个头结点的链表,然后将链表逆置就可以。

。。主要就是讲插入方式变一下就可以。。

代码:

#include<iostream>
#include<cstdio>
#include<cstring>
#include<algorithm>
#include<map>
#include<vector>
#include<cmath>
#include<string>
#include<queue>
#define eps 1e-9
#define ll long long
#define INF 0x3f3f3f3f
using namespace std;

struct node
{
    int data;
    struct node *next;
};

void Readout(struct node * head)
{
    printf("链表为:
");
    struct node *p;
    p=head->next;
    while(p!=NULL)
    {
        printf("%d ",p->data);
        p=p->next;
    }
    printf("
");
}

void Readin(struct node* head)
{
    int val;
    struct node *p,*ly,*q;
    p=head->next;
    head->next=NULL;
    ly=head;
    printf("请输入元素:
");
    for(int i=1;i<=5;i++)
    {
       scanf("%d",&val);
       p=(struct node *)malloc(sizeof(struct node));
       p->data=val;
       p->next=NULL;
       ly->next=p;
       ly=p;
    }
}

void Reverage(struct node *head)
{
    struct node *p,*q;
    p=head->next;
    head->next=NULL;
    while(p!=NULL)
    {
        q=p;
        p=p->next;
        q->next=head->next;
        head->next=q;
    }
}

int main()
{
    struct node *head;
    head=(struct node *)malloc(sizeof(struct node));
    Readin(head);
    Readout(head);
    Reverage(head);
    Readout(head);
    return 0;
}
/*
1 2 3 4 5
*/


原文地址:https://www.cnblogs.com/llguanli/p/6913012.html