Master Linked Lists& Pointer Operations
Learn singly, doubly, and circular linked lists with interactive node-based visualizations.
Choose OperationStart Visualizing
Click on any operation to see it in action with interactive step-by-step visualization
Insert at Head
EasyAdd new node at the beginning of the linked list.
O(1)Insert at Tail
EasyAdd new node at the end of the linked list.
O(n)Insert at Position
MediumInsert node at specific position in the list.
O(n)Delete Head
EasyRemove first node from the linked list.
O(1)Delete Tail
MediumRemove last node from the linked list.
O(n)Delete by Value
MediumFind and remove node with specific value.
O(n)Search Node
EasyFind node with given value in the list.
O(n)Reverse List
MediumReverse the direction of all node pointers.
O(n)Detect Cycle
MediumCheck if list has a cycle using Floyd's algorithm.
O(n)Merge Sorted Lists
MediumMerge two sorted linked lists into one.
O(m + n)Find Middle
EasyFind middle node using slow-fast pointer technique.
O(n)Palindrome Check
MediumCheck if linked list forms a palindrome.
O(n)Each operation includes interactive visualization, code implementation, and complexity analysis
All Linked List OperationsDetailed Overview
Explore 12 linked list operations with complexity analysis, pros & cons, and use cases
Complete OperationsComparison Table
Compare all 10 operations across linked list types
| Operation | Singly Linked | Doubly Linked | Circular | Notes |
|---|---|---|---|---|
| Access by Index | O(n) | O(n) | O(n) | Sequential traversal required |
| Search | O(n) | O(n) | O(n) | Linear search only |
| Insert at Head | O(1) | O(1) | O(1)* | Constant time insertion |
| Insert at Tail | O(n) | O(1)* | O(1)* | *With tail pointer |
| Insert at Position | O(n) | O(n) | O(n) | Requires traversal |
| Delete Head | O(1) | O(1) | O(1) | Update head pointer |
| Delete Tail | O(n) | O(1)* | O(1)* | *With tail pointer |
| Delete at Position | O(n) | O(n) | O(n) | Find then delete |
| Reverse | O(n) | O(n) | O(n) | Pointer reversal |
| Memory per Node | 1 pointer | 2 pointers | 1-2 pointers | Space overhead |
Linked List Characteristics
Singly Linked: One next pointer per node
Pros: Less memory, simple
Cons: No backward traversal
Doubly Linked: Next and prev pointers
Pros: Bidirectional, faster deletes
Cons: More memory
Circular: Last node points to first
Pros: Continuous traversal
Cons: Cycle handling needed