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C++ 字符串问题

说明一个string类的字符串,如何把每个字符作为一个节点以链表形式存储起来?请大侠指点,最好是有结构说明和一些简单的实现代码,3q3q3q··
答案://////////////////////////////////////////////////////////////////////////
//实现链表,单节点存储的是字符串类型的数据
//////////////////////////////////////////////////////////////////////////
#include <iostream>
#include <string>

using namespace std;

struct NODE
{
string Name;
int Distance;
struct NODE* next;
};

void Init(NODE* L)
{
L->Name = "China";
L->Distance = 0;
L->next = NULL;
}

bool InsListHead(NODE* L, string name, int distance)
{
if (!L)
{
return false;
}

NODE* node = new NODE;
node->Name = name;
node->Distance = distance;
node->next = L->next;
L->next = node;
return true;
}

bool InsListTail(NODE* L, string name, int distance)
{
if (!L)
{
return false;
}

NODE* node = new NODE;
node->Name = name;
node->Distance = distance;

NODE* tmp = L;
while (tmp->next != NULL)
{
tmp = tmp->next;
}

if (!tmp)
{
cout << "Insert Erorr position." << endl;
return false;
}
else
{
node->next = tmp->next;
tmp->next = node;
}

return true;
}

// Insert to the destination position
bool InsList(NODE* L, int i, string name, int diatance)
{
if (!L)
{
cout << "The List is NULL" << endl;
return false;
}

NODE* Pos = L;
int k = 0;
while (Pos->next != NULL && k < i - 1)
{
Pos = Pos->next;
k++;
}

if (!Pos)
{
cout << "Insert Erorr Position." << endl;
return false;
}

NODE* node = new NODE;
node->Name = name;
node->next = Pos->next;
Pos->next = node;

return true;
}

// Delete the node of destination
bool DelList(NODE* L, int i)
{
if (!L)
{
cout << "The list is NULL." << endl;
return false;
}

NODE* Pos = L;
int k = 0;
while (Pos->next != NULL && k < i-1)
{
Pos = Pos->next;
++k;
}

if (!(Pos->next))
{
cout << "Delete the erorr position." << endl;
return false;
}

NODE* tmp = Pos->next;
Pos->next = Pos->next->next;
delete tmp;
return true;
}

int ListLength(NODE* L)
{
if (!L)
{
cout << "The NODE is NULL!" << endl;
return 0;
}

int i = 1;
NODE* tmp = L;
while (tmp->next != NULL)
{
tmp = tmp->next;
++i;
}

return i;
}

NODE* Locate(NODE* L, string name)
{
NODE* node;
node = L->next;
int pos = 0;
while (node != NULL)
{
if (node->Name == name)
{
break;
}
else
{
node = node->next;
}
}
return node;
}

int main()
{
NODE* head = new NODE;
Init(head);
InsListTail(head, "Beijing", 10);
InsListTail(head, "ShangHai", 20);
InsListTail(head, "XiaMen", 30);

// 插入 XX 市到第二个位置上,删除第二个节点
InsList(head, 2, "XX", 10);
DelList(head, 2);

// 查找北京市,并且输出距离
string str = "Beijing";
if (!Locate(head, str))
{
cout << "can't the city of " << str << endl;
}
else
{
cout << "find successfully! the distance is " << Locate(head, str)->Distance << endl;
}

// 输出链表的长度
cout << "The length of head is " <<ListLength(head) << "." << endl;

system("pause");
return 0;
}

// 你可以运行试下,没有错误。

struct Node{

char data;

Node* next;

};

Node* List(string str){

     first->data=str.at(0);

    Node*  stateNode=first;

   for(int i=1;i<str.length;i++){

     temp=new Node;

     temp->data=str.at(i);

     stateNode->next=temp;

     stateNode=stateNode->next;

   }

  stateNode->next=NULL;

return first;

}

Node* first;

Node* temp;

int main(void){

      first=new Node;

      first=List("hello,World1");

      while(first->next!=NULL)

      {

          Node* temp=first;

          cout<<temp->data;

          first=first->next;

          delete temp;               

       }

    delete first;

}

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