反向列印一個連結清單
連結清單不同于數組,記憶體并不連續,通過節點之間的指針進行連接配接,逆向列印的時候可以利用棧的特點,比較簡單
#include "static.h"
#include <iostream>
#include <stack>
using namespace std;
struct ListNode
{
ListNode * pNext;
int Value;
};
int main()
{
stack<ListNode> NodeStory;
int i = 0;
const int length = 10;
ListNode * pHead = new ListNode[length];
ListNode * pNode = pHead;
for (;i < (length-1); i++)
{
pNode->Value = i;
ListNode * pNextNode = pNode+1;
pNode->pNext = pNextNode;
NodeStory.push(*pNode);
pNode++;
}
pNode->Value = i;
pNode->pNext = NULL;
NodeStory.push(*pNode);
while (!NodeStory.empty())
{
ListNode tempNode = NodeStory.top();
cout << tempNode.Value<<" ";
NodeStory.pop();
}<pre name="code" class="cpp"> delete pHead;
return 0;}
既然用到棧,那麼也就可以利用遞歸進行完成:
#include "static.h"
#include <iostream>
#include <stack>
using namespace std;
struct ListNode
{
ListNode * pNext;
int Value;
};
void PrintNode(ListNode * pHead)
{
if (pHead != NULL)
{
if (pHead->pNext != NULL)
{
PrintNode(pHead->pNext);
}
cout << pHead->Value<<" ";
}
}
int main()
{
stack<ListNode> NodeStory;
int i = 0;
const int length = 10;
ListNode * pHead = new ListNode[length];
ListNode * pNode = pHead;
for (;i < (length-1); i++)
{
pNode->Value = i;
ListNode * pNextNode = pNode+1;
pNode->pNext = pNextNode;
NodeStory.push(*pNode);
pNode++;
}
pNode->Value = i;
pNode->pNext = NULL;
PrintNode(pHead);
delete pHead;
return 0;
}