双链表的定义
代码如下:
struct DNode
{
int data;
struct DNode *next;
struct DNode *pre;
};
单链表的定义
代码如下:
view plaincopy
struct DNode
{
int data;
struct DNode *next;
};
其他的可以看上一篇博客 大致相同
代码如下:
#ifndef HEAD_H
#define HEAD_H
#include
using namespace std;
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#endif
struct DNode
{
int data;
struct DNode *next;
struct DNode *pre;
};
DNode *Creat()
{
DNode *head,*p,*s;
head=(DNode *)malloc(sizeof(DNode));
p=head;
int temp;
while (cin>>temp&&temp)
{
s=(DNode *)malloc(sizeof(DNode));
s->data=temp;
p->next=s;
s->pre=p;
p=s;
}
head=head->next;
p->next=NULL;
head->pre=NULL;
return (head);
}
DNode *Insert(DNode *&head,int num)
{
DNode *p,*s;
s=(DNode *)malloc(sizeof(DNode));
s->data=num;
p=head;
while (NULL!=p->next&&num>p->data)
{
p=p->next;
}
if (numdata)
{
if (NULL==p->pre)
{
s->next=head;
head->pre=s;
head=s;
head->pre=NULL;
}
else
{
s->pre=p->pre;
p->pre->next=s;
s->next=p;
p->pre=s;
}
}
else
{
p->next=s;
s->pre=p;
s->next=NULL;
}
return(head);
}
DNode *Del(DNode *&head,int num)
{
DNode *p;
p=head;
while (NULL!=p->next&&num!=p->data)
{
p=p->next;
}
if (num==p->data)
{
if (NULL==p->pre)
{
head=p->next;
p->next->pre=head;
free(p);
}
else if (NULL==p->next)
{
p->pre->next=NULL;
free(p);
}
else
{
p->pre->next=p->next;
p->next->pre=p->pre;
free(p);
}
}
else
{
cout