Linked List Visualizer — Insert, Search, Delete
Interactive singly linked list — insert head/tail, search, delete with animated pointer traversal and step controls. Runs in your browser.
Pseudocode
Run an operation to see its steps.
Avg · Worst
How to use
- 1 Type a number and press Insert head or Insert tail to add a node.
- 2 Press Search to walk the list to a value, or Delete to unlink one.
- 3 Use Random to insert a random value, or Clear to empty the list.
- 4 Step back and forward, following the pointers from head to ∅ (null).
Why use this tool
- See nodes linked by next pointers, ending at ∅ (null).
- Watch traversal walk from the head one node at a time — O(n) access.
- Compare O(1) head insertion with O(n) tail insertion and search.
- Runs entirely in your browser. No signup, no uploads.
Frequently asked questions
What is a linked list?
A linked list is a linear structure where each node holds a value and a pointer (next) to the following node. The last node points to null (∅).
What is the time complexity of linked-list operations?
Inserting or removing at the head is O(1); searching, or inserting/deleting elsewhere, is O(n) because you must walk the list.
How is a linked list different from an array?
Arrays give O(1) random access but costly insert/delete in the middle; linked lists give O(1) splicing once you have the node but O(n) access by position.
What is a doubly linked list?
A linked list whose nodes also store a pointer to the previous node, allowing backward traversal and O(1) deletion when you hold a reference to the node.
What is Linked List Visualizer?
A Linked List Visualizer animates a singly linked list — nodes connected by next pointers ending at null (∅). It shows head/tail insertion, traversal-based search, and node deletion by unlinking.
Linked List Visualizer is a free algorithm utility by Zerethon Tools. Interactive singly linked list — insert head/tail, search, delete with animated pointer traversal and step controls. Runs in your browser. Runs entirely in the browser — no signup, no upload.
- Category
- Algorithm
- Pricing
- Free
- Privacy
- Browser-based
- Signup
- Not required
Privacy
Your data never leaves your browser unless explicitly stated. Linked List Visualizer runs entirely client-side — no server upload, no logging, no tracking of your input.
New to this? Read the step-by-step explanation with Big-O analysis: Learn Data Structures →
Build, share, and grow on Zerethon Social
Free signup. Earn points, collect achievements, and connect with creators worldwide.