This program represents a robust implementation of a doubly linked list data structure with a range of versatile features. Upon initialization, an empty doubly linked list is created, and it keeps track of both the head and tail pointers while maintaining a count of the lists length. This foundational structure allows for efficient and dynamic data management.
One noteworthy feature is the ability to traverse the list using list iterators created with the begin() and end() functions. This simplifies element access and iteration. The code also ensures proper memory management through the _destroy() function, which deallocates memory associated with each node, guarding against memory leaks.
The code offers powerful operations such as insertion at both the front and back of the list, as well as the option to split the list at a specified point. Furthermore, it includes functions for list reversal and block reversal, providing flexibility in list manipulation tasks. Additionally, the mergeWith function facilitates the merging of two sorted lists while maintaining their sorted order. Finally, the code employs the efficient merge sort algorithm for sorting the list, which is known for its stability and excellent performance. Collectively, these features make the code a valuable tool for managing and manipulating doubly linked lists in various applications, offering a strong foundation for efficient data organization and processing.