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(); } |
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(); } |
