JavaScript loop linked list implementation method

Introduction

A circular linked list is a special linked list data structure, where the last node points to the head node of the linked list, forming a circular circular structure. Unlike ordinary linked lists, there is no clear end point for circular linked lists, and you can start traversing the entire linked list through any node.

The concept of circular linked list

A circular linked list is a variant of a linked list, where the last node in the linked list points to the head node of the linked list, forming a circular or circular structure.

Unlike ordinary linked lists, circular linked lists do not have a clear end point. It provides a convenient way to traverse the entire linked list, because you can traverse the entire circular linked list from any node and traverse along the next pointer to the original starting node.

In the circular linked list, each node still contains a data element and a pointer to the next node. However, when linking nodes, special attention should be paid to pointing the pointer of the last node to the first node to form a closure of the loop.

The application scenarios of circular link lists include circular lists in game development, carousel diagram display, Joseph's ring problem, etc.

In JavaScript, we can use objects or classes to represent a circular linked list. Create a linked list node object, build a circular linked list through assignment and pointer operations, and ensure that the pointer of the last node points to the head node, forming a loop.

The circular linked list has the following characteristics:

Cyclicity: A circular linked list is a closed structure that forms a loop by pointing the last node to the head node. This means there is no clear end point in the linked list, and you can start from any node and go through the entire linked list until you return to the original starting node.

Flexibility: Since the circular linked list is cyclic, nodes can be inserted or deleted anywhere without modifying the pointers of other nodes. This makes the circular linked list more flexible and efficient in some scenarios, such as implementing circular lists, carousel charts, etc.

Scenario application: Circular linked lists are often used in scenarios that require circular traversal. For example, in game development, a circular linked list can be used to implement a circular list and traverse the player character queue; in a carousel chart or a circular playback scenario, a circular linked list can be used to manage the order of display content.

Requires additional pointers: Compared to ordinary linked lists, a circular linked list requires additional pointers to record the tail node of the linked list (i.e. the last node) or a starting point node that provides convenient access. This makes it easier to insert, delete, traverse and other operations.

Pay attention to the processing of circular linked lists: When operating circular linked lists, pay special attention to handling circular situations to avoid infinite loops or dead loops. In a programming implementation, it is necessary to ensure that the pointer of the last node is correctly set to point to the head node.

These features make circular linked lists a flexible and powerful data structure that can provide convenient and efficient operation methods in some scenarios. Of course, when using circular linked lists, you also need to pay attention to handling circularity and termination conditions to avoid unexpected behavior.

Implement a loop list

In JavaScript, a circular linked list is a special linked list structure, where the last node points to the head node, forming a loop. This data structure can be used to process scenarios that require continuous loop traversal.

The following is an example code to implement a circular linked list using JavaScript:

javascript
class Node {
  constructor(data) {
     = data;
     = null;
  }
}
class CircularLinkedList {
  constructor() {
     = null;
     = null;
  }
  // Add node at the end of the linked list  append(data) {
    const newNode = new Node(data);
    if (!) {
       = newNode;
       = newNode;
    } else {
       = newNode;
       = newNode;
    }
    // Circular link     = ;
  }
  // traverse the linked list  traverse() {
    if (!) {
      ("The linked list is empty.");
      return;
    }
    let current = ;
    do {
      ();
      current = ;
    } while (current !== );
  }
}
// Use exampleconst list = new CircularLinkedList();
(1);
(2);
(3);
();  // Output: 1 2 3

In the example above, we first define the Node class as a template for the linked list node, including a data property and a next pointer to the next node. Then the CircularLinkedList class is defined as a template for the circular linked list, with the function of adding nodes and traversing the linked list. In the append method, we add the new node to the end of the linked list and make sure that the last node points to the head node to form a circular link. In the traverse method, we start traversing the linked list from the first node until we return to the first node.

Summarize

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