doubly linked list

XOR Linked List

XOR Linked List is the memory efficient version of Doubly Linked List because it makes use of only one space for address field with every node. It provides facilitates list traversal in both forward and backward directions. Insertion and deletion operations take constant time

Data Structures

Doubly Linked List has the flexibility of traversing the list in both the ways i.e., forward and backward unlike singly linked list where movement is restricted in forward direction only. Doubly Linked List contains an extra pointer to link the previous node which enables the backward traversing.