Reverse Linked List Using JavaScript

1. Overview

Reversing a linked list with JavaScript is simple and straightforward. All you need to do is iterate through the list, changing the next pointer of each node to the previous node. Make sure to keep the order of operations in mind when doing this.

You can also use a function that takes a pointer to the head node of a linked list and reverses it in place by changing the references. To ensure success, make sure to check whether your list is empty or if it only has one element before reversing it. With these steps, you’ll have no trouble reversing your linked list using JavaScript.

2. Implementation Of Reverse Linked List Using JavaScript

 it('Implementation Of Reverse Linked List Using JavaScript', () => {
    const linkedList = new LinkedList();

    // Add test values to linked list.
    linkedList
      .append(1)
      .append(2)
      .append(3);

    expect(linkedList.toString()).toBe('1,2,3');
    expect(linkedList.head.value).toBe(1);
    expect(linkedList.tail.value).toBe(3);

    // Reverse linked list.
    linkedList.reverse();
    expect(linkedList.toString()).toBe('3,2,1');
    expect(linkedList.head.value).toBe(3);
    expect(linkedList.tail.value).toBe(1);

    // Reverse linked list back to initial state.
    linkedList.reverse();
    expect(linkedList.toString()).toBe('1,2,3');
    expect(linkedList.head.value).toBe(1);
    expect(linkedList.tail.value).toBe(3);
  });

3. Conclusion

In conclusion, reversing a singly linked list using JavaScript can be achieved in two ways: the iterative approach or the recursive approach. Both approaches involve adjusting the node pointers of each node so that they point to the previous node.

The iterative approach involves storing a reference to each node in the list as well as its previous node, while the recursive approach requires passing in a reference to the head node and recursively traversing through each node until it reaches the end of the list. Whichever approach you choose, make sure to check for empty or single-element lists before beginning.

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Dr. Padmaraj works as a code consultant for international students on this platform. Dr. Padmaraj influence young students to achieve their coding dreams. He is a recognized scholar and a leading expert in coding and technology. Today, via devoutput.com he helps students apply their coding skills to create software applications. Doctor.Padmaraj is a renowned author whose books are available worldwide on Amazon.

1. Overview

2. Implementation Of Reverse Linked List Using JavaScript

3. Conclusion

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