使用模板参数传递链表的节点类型和数据类型

template <typename T>
struct Node {
    T data;
    Node<T>* next;
};

template <typename T>
class LinkedList {
public:
    LinkedList() : head(nullptr) {}

    void insert(const T& data) {
        Node<T>* newNode = new Node<T>;
        newNode->data = data;
        newNode->next = nullptr;

        if (head == nullptr) {
            head = newNode;
        } else {
            Node<T>* current = head;
            while (current->next != nullptr) {
                current = current->next;
            }
            current->next = newNode;
        }
    }

    // 其他链表操作方法...

private:
    Node<T>* head;
};

LinkedList<int> intList;
intList.insert(1);
intList.insert(2);
intList.insert(3);

LinkedList<std::string> stringList;
stringList.insert("Hello");
stringList.insert("World");