"城市链表设计与操作：存储城市信息、查找、插入、删除、更新的实现"

The city linked list is a data structure designed to store the information of several cities, including their names and position coordinates, in a singly linked list with a header node. The basic requirements of this design include the ability to perform operations such as searching, inserting, deleting, and updating using the city names and position coordinates. The algorithmic approach for this design involves creating a city linked list that allows the input of city information, including names and position coordinates. Additionally, a query function is created to search for position coordinates using city names, and another query function is created to search for city names based on the distance from the central coordinates. A selection function is also implemented to choose the desired query method. Furthermore, insertion, deletion, and update functions are included to manipulate the city information. These functions are then called within the main function using switch statements to satisfy different requirements. The modular division of the program includes functions such as initialization of the linked list, creating the city linked list, searching for city coordinates based on city names, searching for city names based on coordinates, and other operations like inserting, deleting, and updating city information. Overall, this data structure design of a city linked list effectively manages and manipulates the information of multiple cities, providing a comprehensive solution for performing various operations based on city names and position coordinates. Through a well-structured algorithmic approach and modular division, the design ensures efficient functionality and flexibility in handling diverse requirements related to city information management. This design provides a solid foundation for further development and utilization in practical applications related to city information management and analysis.