# JavaScript Exercises: Print a singly linked list in reverse order

## JavaScript Singly Linked List: Exercise-2 with Solution

Write a JavaScript program to create a singly linked list of n nodes and display it in reverse order.

Sample Solution:

JavaScript Code:

``````class Node {
constructor(data) {
this.data = data
this.next = null
}
}
}
if(node==null){
return;
}
while (node.next) {
node = node.next;
}
node.next = newNode;
}

reverse_list(){
let prevNode = null;
if(currentNode===null) return;

let nextNode;
while(currentNode){
nextNode = currentNode.next;
currentNode.next = prevNode;
prevNode = currentNode;
currentNode = nextNode;
}
}

displayList(){
var str = ""
while (node) {
str += node.data + "->";
node = node.next;
}
str += "NULL"
console.log(str);
}
}
numList.displayList();
numList.reverse_list();
numList.displayList();

```
```

Sample Output:

```Original Linked list:
2->3->4->5->6->7->NULL
7->6->5->4->3->2->NULL
```

Flowchart: Live Demo:

See the Pen javascript-singly-linked-list-exercise-2 by w3resource (@w3resource) on CodePen.

Improve this sample solution and post your code through Disqus

Singly Linked List Next: Count number of nodes in a Singly Linked List.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.

﻿

## JavaScript: Tips of the Day

Shorten an array using its length property

A great way of shortening an array is by redefining its length property.

```let array = [0, 1, 2, 3, 4, 5, 6, 6, 8, 9]
array.length = 4
// Result: [0, 1, 2, 3]
```

Important to know though is that this is a destructive way of changing the array. This means you lose all the other values that used to be in the array.

Ref: https://bit.ly/2LBj213