https://practice.geeksforgeeks.org/problems/k-largest-elements/0

k-largest-elements.js

// https://www.geeksforgeeks.org/k-largestor-smallest-elements-in-an-array/
// https://practice.geeksforgeeks.org/problems/k-largest-elements/0
function kLargest(arr, n, k) {
  return arr.sort((a, b) => b - a).splice(0, k);
}
const arrEx1 = [12,5,787,1,23];
const resEx1 = kLargest(arrEx1, arrEx1.length, 2);
console.log(resEx1.join(',') === '787,23');
const arrEx2 = [1,23,12,9,30,2,50];
const resEx2 = kLargest(arrEx2, arrEx2.length, 3);
console.log(resEx2.join(',') === '50,30,23');