题目五：从尾到头打印链表

Posted 2022-05-22 yzdai

//////////////////////////////////////////////////////////////////////////////////////////////
// 8.题目五：从尾到头打印链表

// 方法一：时间复杂度O(n),空间复杂度O(n)
template <typename TYPE>
void ReversePrintList1(ListNode<TYPE>* pNode)

    assert(NULL != pNode);

    stack<ListNode<TYPE>*> stStack;
    while (pNode)
    
        stStack.push(pNode);
        pNode = pNode->m_pNextNode;
    
    
    cout << "链表逆序打印: " << endl;
    while (!stStack.empty())
    
        ListNode<TYPE>* pTmpNode = stStack.top();
        printf("%02d -> ", pTmpNode->m_stData);
        stStack.pop();
    

    putchar(10);




// 方法二：递归实现(递归实现也是类似栈实现)
// 时间复杂度O(n), 空间复杂度O(n)
// 注意：如果链表非常长，会导致函数调用层级很深，从而导致函数调用栈溢出！！！
template <typename TYPE>
void ReversePrintLisHEAP_TYPE(ListNode<TYPE>* pNode)

    if (!pNode)
    
        return;
    

    ReversePrintLisHEAP_TYPE(pNode->m_pNextNode);

    printf("%02d -> ", pNode->m_stData);


void ReversePrintListTestFunc()

    cout << "\n\n --------------- ReversePrintListTestFunc Start -------------->" << endl;
    const int MAX_LIST_NODE_COUNT = 10;
    int aiArray[MAX_LIST_NODE_COUNT] = 0;

    INITIALIZE_ARRAY(aiArray, MAX_LIST_NODE_COUNT);
    TRAVERSAL_ARRAY(aiArray, MAX_LIST_NODE_COUNT);

    CSingleList<int>* pList = new CSingleList<int>();
    if (!pList)
    
        return;
    

    for (int i = 0; i < MAX_LIST_NODE_COUNT; i++)
    
        pList->Insert(aiArray[i]);
    

    pList->Traversal();

    ReversePrintList1(pList->GetHeadNode());

    cout << "递归实现链表逆序打印: " << endl;
    ReversePrintLisHEAP_TYPE(pList->GetHeadNode());
    putchar(10);

    delete pList;
    pList = NULL;

    cout << "\n\n --------------- ReversePrintListTestFunc End -------------->" << endl;