Singly Linked Lists vs. Doubly Linked Lists

Which is Better? #

DLLs has a few advantages over SLLs

• Doubly linked lists can be traversed in both directions, which makes them more compatible with complex algorithms.
• Operations involving tail become much faster. Deletion at the tail is one such example.

These benefits entail the cost of extra memory:

• Nodes in doubly linked lists require extra memory to store the previousElement pointer.

Lets’s look at the implementation of delete at the tail operation to see the real power of a DLL.