Good morning! Here's our prompt for today.

Now that we've implemented a linked list, can you write a method that will delete all nodes of a given value?

You're given the following standard structure as the definition of a linked list node:

1class LinkedListNode {
2	constructor(val) {
3		this.val = val;
4		this.next = null;
5	}
6}

The follow scenario is how we would invoke the method with a linked list 1 -> 2 -> 2 -> 5 -> 6. As you can see, running the method results in removing all 2s in the list.

1// head = 1 -> 2 -> 2 -> 5 -> 6
2// val = 2
3removeNodes(head, val);
4// 1 -> 5 -> 6

Constraints

• The value of the nodes as well as the value to be deleted are within integer limits (between -1000000000 and 1000000000 )
• After deleting the nodes, you need to return the head of the new linked list
• The given linked list can be null
• In case all nodes are deleted, return null
• Expected time complexity : O(n)
• Expected Space complexity : O(1)

Try to solve this here or in Interactive Mode.

How do I practice this challenge?

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  console.log('PASSED: ' + 'removeNodes(list1, 10)');

var assert = require('assert');

​

function removeNodes(head, val) {

  // Fill in this method

  return head;

}

​

function Node(val) {

  this.val = val;

  this.next = null;

}

​

function LinkedListNode(val) {

  this.val = val;

  this.next = null;

}

​

var list1 = new LinkedListNode(3);

var nodes1 = [4, 5, 6, 7, 8, 9, 10];

createNodes(list1, nodes1);

​

var list2 = new LinkedListNode(1);

var nodes2 = [2, 3, 4, 5, 6, 7, 8];

createNodes(list2, nodes2);

​

function createNodes(head, nodes) {

  for (let i = 0; i < nodes.length; i++) {

    var newNode = new LinkedListNode(nodes[i]);

    head.next = newNode;

Here's our guided, illustrated walk-through.

How do I use this guide?