<pre class="shiki github-dark shaku"><code>/** * @param {any[]} arr1 * @param {any[]} arr2 * @returns {any[]} */function getIntersection(arr1, arr2) { const set = new Set(arr1); return arr2.filter(item =&gt; { const hasElement = set.has(item); if(hasElement) { set.delete(item); } return hasElement; });}</code></pre>

solution with set

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 …