要用C++编译出来的啦...各位大虾帮帮忙啊..
建立一个单链表,显示链表中每个结点的数据
- 提问者网友:星空下的寂寞
- 2021-05-11 19:26
- 二级知识专家网友:无字情书
- 2021-05-11 20:33
//单链表的动态创建,查找,遍历,删除,插入,添加,排序
#include<iostream.h>
typedef struct node //定义一个结构体,在c++中也是一个类
{
int val;
struct node* pNext;
}NODE,*PNODE;
class MyList //创建一个类
{
private:
PNODE pHead;//struct node* pHead
public:
MyList() //构造函数,构造一个空链表头指针
{
this->pHead = NULL;
}
~MyList()
{
while(this->pHead!=NULL)
{
PNODE pTemp = pHead->pNext;
delete pHead;
pHead = pTemp;
}
}
void Init() //初始化链表
{
int a;
char ans;
PNODE pTail,pNew;
do
{
cout<<"请输入一个节点值:";
cin>>a;
if(pHead == NULL)
{
pHead = new NODE;
pHead->val = a;
pHead->pNext = NULL;
pTail = pHead;
}
else
{
pTail = pHead;
while(pTail->pNext!=NULL)//把pTail移动到尾部
{
pTail = pTail->pNext;
}
pNew = new NODE;//new一个新的接点来接受新输入的值
pNew->val = a;
pNew->pNext = NULL;
pTail->pNext = pNew;
pTail = pTail->pNext;
}
cout<<"继续吗?(Y/N): ";
cin>>ans;
}while(ans=='Y'||ans=='y');
}
void Add(int val) //向链表中追加值方法
{
if(pHead == NULL)
{
pHead = new NODE;
pHead->val = val;
pHead->pNext = NULL;
}
else
{
PNODE pTemp = pHead;
while(pTemp->pNext!=NULL)
{
pTemp = pTemp->pNext;
}
PNODE pNew = new NODE;
pNew->val = val;
pNew->pNext = NULL;
pTemp->pNext = pNew;
}
}
int InsertAt(int val,int k)//向链表中插入元素,约定在k之前插入
{
PNODE p1,p2,pNew,pTemp;
if(pHead == NULL)//链表为空
{
return -1;
}
if(k<0 || k>this->GetNodeCnt()-1)//k越界
{
return -1;
}
if(k==0)//在头节点之前插入
{
pTemp = pHead;
pNew = new NODE;
pNew->val = val;
pNew->pNext = NULL;
pHead = pNew;
pNew->pNext = pTemp;
return 0;
}
p1 = pHead;
int i =0;
while(i<k-1)
{
p1 = p1->pNext;
i++;
}
p2 = p1->pNext;
pNew = new NODE;
pNew->val = val;
pNew->pNext = NULL;
p1->pNext = pNew;
pNew->pNext = p2;
return 0;
}
int Find(int val) //按输入的值查找方法
{
int i=0;
PNODE pTemp = pHead;
while(pTemp != NULL)
{
if(pTemp->val == val)
{
return i;
}
pTemp = pTemp->pNext;
i++;
}
return -1;
}
void Travel() //遍历单链表中的元素
{
PNODE pTemp = this->pHead;
while(pTemp!=NULL)
{
cout<<pTemp->val<<" ";
pTemp = pTemp->pNext;
}
cout<<endl;
}
int GetNodeCnt() //获取单链表中元素的个数
{
int cnt=0;
PNODE pTemp = pHead;
while(pTemp!=NULL)
{
cnt++;
pTemp = pTemp->pNext;
}
return cnt;
}
void sort() //排序
{
int n = this->GetNodeCnt();
PNODE p1,p2;
for(int i=0;i<n-1;i++)
{
p1 = pHead;
for(int j=0;j<n-1-i;j++)
{
p2 = p1->pNext;
if(p1->val < p2->val)
{
int k = p1->val;
p1->val = p2->val;
p2->val = k;
}
p1 = p1->pNext;
}
}
}
};
void main()
{
MyList list;
for(int i=0;i<10;i++)
{
list.Add(i);
}
list.Travel(); //遍历单链表中的元素 并输出
list.sort();
list.Travel(); //排序后遍历链表中的元素 再次输出
}
- 1楼网友:一个很哇塞的汉子
- 2021-05-11 20:55