<pre class="shiki github-dark shaku"><code>// This is a JavaScript coding problem from BFE.dev function shuffle(arr: any[]): void { // modify the arr inline to change the order randomly for(let i=arr.length-1; i&gt;=0;i--) { const j = Math.floor(Math.random() * (i+1)); [arr[i], arr[j]] = [arr[j], arr[i]]; }}</code></pre>

利用math.random随机交换数组两个index

How would you implement a shuffle() ? When passed with an array, it should modify the array inline to generate a randomly picked permutation at the sa…