//【数据结构】用C++实现单循环链表的各种操作(包括头删,尾删,插入,逆序,摧毁,清空等等) //头文件 #ifndef _CDLIST_H #define _CDLIST_H #include<iostream> using namespace std; template<class Type> class CDList; template<class Type> class ListNode { friend class CDList<Type>; public: ListNode() :data(Type()),next(NULL),prio(NULL) {} ListNode(Type d,ListNode<Type> *n = NULL,ListNode<Type> *m = NULL) :data(d),next(n),prio(m) {} ~ListNode() {} private: Type data; ListNode<Type> *next; ListNode<Type> *prio; }; template<class Type> class CDList { public: CDList() { first = last = Buynode(); last->next = first; first->prio = last; } ~CDList() { destroy(); } public: void push_back(const Type &x) //尾插`` { ListNode<Type> *s = Buynode(x); last->next = s; s->prio = last; s->next = first; first->prio = s; last = s; first->data++; } void push_front(const Type &x) //头插`` { if (first->data == 0) { push_back(x); return; } ListNode<Type> *s = Buynode(x); s->next = first->next; first->next->prio = s; first->next = s; s->prio = first; first->data++; } void pop_back() //尾删`` { if (first->data == 0) return; ListNode<Type> *p = last; last = last->prio; last->next = first; first->prio = last; delete p; first->data--; } void pop_front() //头删`` { if (first->data == 0) { return; } else { ListNode<Type> *s = first->next; if (first->data == 1) { last = first; last->next = first; first->prio = last; } else { first->next = s->next; s->next->prio = first; } delete s; first->data--; } } void insert_val(const Type &x) //按值插入`` { ListNode <Type> *p = Buynode(x); ListNode <Type> *s = first; if (first->data == 0) { push_back(x); return; } while (s->next->data<x&&s->next->next != first) { s = s->next; } if (s->next->next == first) { if (s->next->data>x) { p->next = s->next; s->next->prio = p; s->next = p; p->prio = s; first->data++; } else push_back(x); } else { p->next = s->next; s->next->prio = p; s->next = p; p->prio = s; first->data++; } } void show_list() //显示`` { if (first->data == 0) { cout << "NULL" << endl; return; } ListNode<Type> *q = first->next; while (q != first) { cout << q->data << "->"; q = q->next; } cout << "NULL first->data=" << first->data << " last->next->data=" << last->next->data << " last->data=" << last->data << " first->prio->data=" << first->prio->data << " " << endl; } void sort() //排序`` { if (first->data == 0) { return; } ListNode<Type> *p = first->next; ListNode<Type> *q = p->next; p->next = first; first->prio = p; last = p; first->data = 1; ListNode<Type> *r; while (q != first) { insert_val(q->data); r = q; q = q->next; delete r; } } ListNode<Type>* find(const Type &x) //查找`` { ListNode<Type> *s; for (s = first->next; s != first; s = s->next) { if (s->data == x) { return s; } } return NULL; } int length() //求长度`` { return(first->data); } void delete_val(const Type &x) //按值删除`` { if (first->data == 0) { cout << "未找到该数:" << endl; return; } else { ListNode<Type> *p = find(x); if (p == NULL) { cout << "未找到该数:" << endl; return; } ListNode<Type> *q = first; while (q->next != p) { q = q->next; } if (q->next->next == first) { pop_back(); } else { q->next = p->next; p->next->prio = q; delete p; first->data--; } } } void clear() //清除`` { if (first->data == 0) return; while (first->next != first) { pop_back(); } } void resver() //逆序`` { if (first->data == 0) { return; } ListNode<Type> *p = first->next; ListNode<Type> *q = p->next; p->next = first; first->prio = p; last = p; first->data = 1; ListNode<Type> *r; while (q != first) { push_front(q->data); r = q; q = q->next; delete r; } } void quit_system(int &a) //退出`` { clear(); a = 0; } void destroy() //摧毁`` { clear(); delete first; } protected: ListNode<Type>* Buynode(Type x = Type()) { ListNode<Type> *p = new ListNode<Type>(x); return p; } private: ListNode<Type> *first; ListNode<Type> *last; }; #endif //主函数 #include"CDList.h" void main() { CDList<int> mylist; int select = 1; int Item; while (select) { cout << "**************************************" << endl; cout << "* [1] show_list [2] push_front *" << endl; cout << "* [3] push_back [4] pop_front *" << endl; cout << "* [5] pop_back [6] insert_val *" << endl; cout << "* [7] find [8] delete_val *" << endl; cout << "* [9]length [10] clear *" << endl; cout << "* [11] quit_system [12] destroy *" << endl; cout << "* [13] resver [14] sort *" << endl; cout << "**************************************" << endl; cout << "请选择:>"; cin >> select; switch (select) { case 1: mylist.show_list(); break; case 2: cout << "请输入要插入的值(-1结束):>"; while (cin >> Item,Item != -1) { mylist.push_front(Item); } break; case 3: cout << "请输入要插入的值(-1结束):>"; while (cin >> Item,Item != -1) { mylist.push_back(Item); } break; case 4: mylist.pop_front(); ; break; case 5: mylist.pop_back(); break; case 6: cout << "请输入要插入的值:>"; cin >> Item; mylist.insert_val(Item); break; case 7: cout << "请输入要查找的数:"; cin >> Item; cout << "该数的地址为:"; cout << mylist.find(Item) << endl; break; case 8: cout << "请输入要删除的值:>"; cin >> Item; mylist.delete_val(Item); break; case 9: cout << "该顺序表长度为:" << mylist.length() << endl; break; case 10: mylist.clear(); break; case 11: mylist.quit_system(select); break; case 12: mylist.destroy(); case 13: mylist.resver(); break; case 14: mylist.sort(); break; default: break; } } return; } <img src="http://img.blog.csdn.net/20150531224751379?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvZG91ZG91d2ExMjM0/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt="" /> @H_502_1@