Doubly Linked Lists
Explore how doubly linked lists extend singly linked lists by storing references to both previous and next nodes, enabling forward and backward traversal. Learn their structure, implementation in Java, and practical applications like browser history and undo-redo systems. Understand the benefits and trade-offs in memory usage and pointer management to effectively use doubly linked lists in your coding projects.
At this stage, singly linked lists and operations such as insertion, deletion, and traversal have been covered. In a singly linked list, each node stores a value and a reference to the next node. This design supports traversal in the forward direction, one node at a time.
However, singly linked lists have an important limitation. As each node only stores a link to the next node, traversal is only possible in one direction. If we are currently at a node and want to return to the previous node, there is no direct way to do that. ...