difference between double-ended linked lists and doubly-linked list

Question

I don\'t understand difference between a double-ended and doubly-linked list.

What is the major difference between the two?

Answer 1

In a doubly linked list, each node has two pointers. One towards its next node and another one towards its previous node.

In a double-ended linked list, each node has just one pointer which points to its next node. Its difference from the single-ended linked list is that instead of just one "head" node, it contains two pointers of this kind ("first" and "last"), so someone is able to insert elements to list from both ends of it.

(Last picture isn't that clear, but it catches the point of the two ends.)