<pre class="shiki github-dark shaku"><code>/** * @param {any[]} arr1 * @param {any[]} arr2 * @returns {any[]} */function getIntersection(arr1, arr2) { // your code here const a = new Set(arr1) const b = new Set(arr2) return [...a].filter(a =&gt; b.has(a))}// getIntersection([], [1,2,3])</code></pre>

Set.protoype.has()

Given two arrays, find the intersection(items occur in both arrays) 1. arrays are not sorted, and might have duplicates. 2. you can modify the arrays …