<pre class="shiki github-dark shaku"><code>/** * @param {number[]} arr * @returns number */function findSingle(arr) { // your code here return arr.reduce((acc, num) =&gt; acc ^ num, 0);}</code></pre>

find-the-single-integer

Given an array of integers, all integers appear twice except one integer, could you quickly target it ? const arr = [10, 2, 2 , 1, 0, 0, 10]findSingle…