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Data Structures for Coding Interviews in JavaScript

Challenge: Reverse Linked List

Explore how to reverse a singly linked list by manipulating node pointers and returning the updated head. This lesson guides you through implementing this fundamental linked list operation in JavaScript to strengthen your coding interview skills.

We'll cover the following...

Statement

Given the head of a singly linked list, reverse the linked list and return its updated head.

Constraints:

Let n be the number of nodes in a linked list.

  • 1≤1 \leq n ≤5×102\leq 5\times10^2
  • −5×103≤-5\times10^3 \leq Node.value ≤5×103\leq 5\times10^3

Examples

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Try it yourself

Implement your solution in the following coding playground.

JavaScript
usercode > main.js
import {LinkedListNode} from './ds_v1/LinkedList.js';



// Definition of a linked list node

// class LinkedListNode {

//   constructor(data) {

//     this.data = data;

//     this.next = null;

//   }

// }



function reverse(head) {



    // Replace this placeholder return statement with your code

    return head;

}



export {

    reverse

};
Reverse Linked List