用QT写一个链表

以下是一个基本的链表类实现，使用了QT中的QList类：

#include <QtCore>

class Node {
public:
    int data;
    Node* next;

    Node(int d) {
        data = d;
        next = nullptr;
    }
};

class LinkedList {
public:
    Node* head;

    LinkedList() {
        head = nullptr;
    }

    void append(int data) {
        Node* new_node = new Node(data);
        if (head == nullptr) {
            head = new_node;
        } else {
            Node* current = head;
            while (current->next != nullptr) {
                current = current->next;
            }
            current->next = new_node;
        }
    }

    void print() {
        Node* current = head;
        while (current != nullptr) {
            qDebug() << current->data;
            current = current->next;
        }
    }
};

使用示例：

LinkedList list;
list.append(1);
list.append(2);
list.append(3);
list.print();

输出：

1
2
3