低调de小兔

#include #include #include using namespace std; class List { private: struct ListNode { string value; ListNode* next; }*head; public: List() { head = new(ListNode); head->next = NULL

#include #include #include using namespace std; class Stack { private: struct StackNode { string value; StackNode* next; }*top; public: Stack() { top = new(StackNode); top->next = NU

#include #include #include using namespace std; class Queue { private: struct QueueNode { string value; QueueNode* next; }*head; public: Queue() { head = new(QueueNode); head->next =