直接上代码了，说明看注释就可以：
利用静态成员构建链表
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#include <IOSTREAM.H>
class Node
{
public:
Node(int val, Node* next):val(val),next(next){}
//~Node(){cout<<"del "<<val<<endl;}
static void showAll();//打印全部节点的值
static void insertHead(int);//头插
static void insertTail(int);//尾插
static void delHead();//删头
static void delTail();//删尾
static void clear();//清空
protected:
int val;
Node *next;
static Node *head;
private:
};
Node* Node::head = 0;
void Node::showAll(){//打印全部节点的值
Node *p = head;
while (p)
{
cout<<p->val<<" ";
p = p->next;
}
cout<<endl;
}
void Node::insertHead(int val){//头插
Node *p = new Node(val, head);
head = p;
}
void Node::insertTail(int val){//尾插
Node *p = new Node(val, 0);
if (!head)
{
head = p;
return;
}
Node *q = head;
while (q->next)
{
q = q->next;
}
q->next = p;
}
void Node::delHead(){//删头
Node *p = head;
if (head)
{
head = head->next;
delete p;
}
}
void Node::delTail(){//删尾
if (!head)
{
return;
}
if (!(head->next))
{
delete(head);
head = NULL;
return;
}
Node *p = head;
while (p->next->next)
{
p = p->next;
}
delete(p->next);
p->next = NULL;
}
void Node::clear(){//清空
Node *p = head;
Node *q = 0;
head = 0;
while (p)
{
q = p;
p = p->next;
delete q;
}
}
void main(){
Node::delHead();
Node::delTail();
Node::insertTail(2);
Node::delTail();
for (int i = 0; i < 10; i++)
{
Node::insertTail(i + 1);
}
Node::delTail();
Node::showAll();
}
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利用类模板构建链表
这有点类似于list<>：
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#include <iostream>
#include <string>
using namespace std;
template<class T> class Node//创建一个类模板，一个可以放入任何类型节点的链表
{
public:
Node(T val, Node* next):val(val),next(next){}
static void showAll();//打印全部节点的值
static void insertHead(T);//头插
static void insertTail(T);//尾插
static void delHead();//删头
static void delTail();//删尾
static void clear();//清空
protected:
T val;
Node *next;
static Node *head;
private:
};
template<class T> Node<T>* Node<T>::head = 0;
template<class T> void Node<T>::showAll(){//打印全部节点的值
Node *p = head;
while (p)
{
cout<<p->val<<" ";
p = p->next;
}
cout<<endl;
}
template<class T> void Node<T>::insertHead(T val){//头插
Node *p = new Node(val, head);
head = p;
}
template<class T> void Node<T>::insertTail(T val){//尾插
Node *p = new Node(val, 0);
if (!head)
{
head = p;
return;
}
Node *q = head;
while (q->next)
{
q = q->next;
}
q->next = p;
}
template<class T> void Node<T>::delHead(){//删头
Node *p = head;
if (head)
{
head = head->next;
delete p;
}
}
template<class T> void Node<T>::delTail(){//删尾
if (!head)
{
return;
}
if (!(head->next))
{
delete(head);
head = NULL;
return;
}
Node *p = head;
while (p->next->next)
{
p = p->next;
}
delete(p->next);
p->next = NULL;
}
template<class T> void Node<T>::clear(){//清空
Node *p = head;
Node *q = 0;
head = 0;
while (p)
{
q = p;
p = p->next;
delete q;
}
}
class Student//创建一个自定义的学生类
{
public:
Student(string name, int age,char sex):name(name), age(age), sex(sex){}
void showInfo(){
cout<<"姓名:"<<name<<" 年龄:"<<age<<" 性别:"<<sex<<endl;
}
protected:
string name;
int age;
char sex;
private:
};
void Node<Student>::showAll(){//学生类节点和其他基本数据类型不同，不能直接用<<输出，所以重载showAll()
Node *p = head;
while (p)
{
p->val.showInfo();
p = p->next;
}
}
void main(){
for (int i = 1; i < 10; i++)
{
Node<int>::insertTail(i);//这时Node<int>称为一个用类模板生成的模板类
Node<float>::insertTail(i / 10.0f);
Node<double>::insertTail(i / 10.00);
Node<Student>::insertTail(Student("stu", i, 'F'));
}
Node<int>::showAll();
Node<float>::showAll();
Node<double>::showAll();
Node<Student>::showAll();
}
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