Linked List Visualizer

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Notes

Linked lists consist of nodes where each node points to the next.

They provide dynamic memory usage and efficient insertions/deletions at head/tail.

Index-based access is O(n), unlike arrays (O(1)).

Implementation (TypeScript)

class ListNode {
  value: number;
  next: ListNode | null = null;
  constructor(value: number) {
    this.value = value;
  }
}
class LinkedList {
  head: ListNode | null = null;
  addHead(value: number) { /* ... */ }
  addTail(value: number) { /* ... */ }
  addAtIndex(value: number, index: number) { /* ... */ }
  deleteHead() { /* ... */ }
  deleteTail() { /* ... */ }
  deleteAtIndex(index: number) { /* ... */ }
  search(value: number) { /* ... */ }
}

About Linked Lists

A linked list is a linear data structure where each element (node) contains a value and a pointer to the next node.

Advantages:

Dynamic size (no need for pre-allocation)
Efficient insertions/deletions at head/tail

Disadvantages:

Slow index-based access (O(n))
Extra memory for pointers