AlgoDaily - Merge K (Multiple) Sorted Lists

Your Submissions

You haven't submitted any code for this challenge yet. Solve the problem by passing all the test cases, and your submissions will appear here.

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var assert = require('assert');
​
function mergeLists(arrOfLists) {
  // fill in this method
  return [];
}
​
// Supporting data structures
​
function Node(val) {
  this.val = val;
  this.next = null;
}
​
class LinkedList {
  constructor() {
    this.head = null;
    this.tail = null;
  }
​
  prepend(newVal) {
    const currentHead = this.head;
    const newNode = new Node(newVal);
    newNode.next = currentHead;
    this.head = newNode;
​
    if (!this.tail) {

OUTPUT

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