Linked List Structure - Circular DLL

Circular Doubly Linked List

A circular doubly linked list gives every node both next and prev links, while the tail and head also point back to each other.

Two Directions

Each node has next and prev, so traversal can move forward or backward.

The tail links to head and head.prev links to tail, removing null ends.

Given a node, insertion and deletion repair four neighboring links.

Single-node and empty-list cases need special handling because links point back to self.

List valuesSelected value

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Linked List Structure - Circular DLL

A circular doubly linked list gives every node both next and prev links, while the tail and head also point back to each other.

Each node has next and prev, so traversal can move forward or backward.

The tail links to head and head.prev links to tail, removing null ends.

Given a node, insertion and deletion repair four neighboring links.

Single-node and empty-list cases need special handling because links point back to self.

List valuesSelected value