作者:隐身勇者_641 | 来源:互联网 | 2023-10-10 16:18
用C++实现双链表的增删查改以及双向链表的逆转C++实现顺序表基本函数以及增删查改单链表:链表中的数据是以节点来表示的,每个结点的构成:元素(数据元素的映象)+指针(指示后继
用C++实现双链表的增删查改以及双向链表的逆转
C++实现顺序表基本函数以及增删查改
单链表:
链表中的数据是以节点来表示的,每个结点的构成:元素( 数据元素的映象) + 指针(指示后继元素存储位置),元素就是存储数据的存储单元,指针就是连接每个结点的地址数据。
#include<iostream>
#include<windows.h>
#include<assert.h>
using namespace std;
typedef int DataType;
struct SListNode
{
SListNode* _next;
DataType _data;
SListNode(DataType x)
:_data(x)
, _next(NULL)
{}
};
class SList
{
typedef SListNode Node;
public:
SList()
:_head(NULL)
, _tail(NULL)
{}
SList(const SList& s)
:_head(NULL)
, _tail(NULL)
{
Node*cur = s._head;
while (cur)
{
PushBack(cur->_data);
cur = cur->_next;
}
}
SList&operator=(const SList &l)
{
if (this != &l)
{
this->Destroy();
Node*head = l._head;
while (head)
{
PushBack(head->_data);
head = head->_next;
}
return *this;
}
}
SList&operator=(SList l)
{
swap(_head, l._head);
swap(_tail, l._tail);
return *this;
}
~SList()
{
Destroy();
}
void Destroy()
{
Node*cur = _head;
while (cur)
{
Node*next = cur->_next;
delete cur;
cur = next;
}
_head = _tail = NULL;
}
void PushBack(DataType x)
{
if (_head == NULL)
{
_head = _tail = new Node(x);
}
else
{
_tail->_next = new Node(x);
_tail = _tail->_next;
}
}
void PopBack()
{
if (_head == NULL)
{
return;
}
else if (_head->_next == NULL)
{
delete _head;
_head = _tail = NULL;
}
else
{
Node* tmp = _head;
while (tmp->_next->_next != NULL)
{
tmp = tmp->_next;
}
_tail = tmp;
tmp->_next = NULL;
}
}
void PushFront(DataType x)
{
if (_head == NULL)
{
_head=_tail = new Node(x);
}
else
{
Node *tmp = new Node(x);
tmp->_next = _head;
_head = tmp;
}
}
void PopFront()
{
if (_head == _tail)
{
delete _head;
_head = _tail = NULL;
}
else
{
Node *tmp = _head->_next;
delete _head;
_head = tmp;
}
}
void Insert(Node* pos, DataType x)
{
assert(pos);
Node*cur = _head;
while (cur->_next != pos)
{
cur = cur->_next;
}
Node*tmp = new Node(x);
cur->_next = tmp;
tmp->_next = pos;
}
Node* Find(DataType x)
{
Node*tmp = _head;
while (tmp)
{
if (tmp->_data == x)
{
return tmp;
}
tmp = tmp->_next;
}
return NULL;
}
void Erase(Node* pos)
{
assert(pos);
if(pos->_next==NULL)
{
PopBack();
}
else
{
Node*cur = _head;
while (cur->_next != pos)
{
cur = cur->_next;
}
cur->_next = pos->_next;
delete pos;
}
}
void Print()
{
Node*tmp = _head;
while (tmp != NULL)
{
cout << tmp->_data << " ";
tmp = tmp->_next;
}
cout << endl;
}
private:
Node* _head;
Node* _tail;
};