<pre class="shiki github-dark shaku"><code>/** * @param { Array } arr * @param { number } depth * @returns { Array } */function flat(arr, depth = 1) { const result = []; arr.forEach(val =&gt; Array.isArray(val) &amp;&amp; depth &gt;= 1 ? result.push(...flat(val, depth - 1 )) : result.push(val)) return result;}</code></pre>
Github link: <a href="https://github.com/DeRaowl/bfe-codejam/blob/master/3.md">https://github.com/DeRaowl/bfe-codejam/blob/master/3.md</a>

My Accepted Solution

TikTok

Google

Apple

Yandex

Roblox

There is already Array.prototype.flat() in JavaScript (ES2019), which reduces the nesting of Array. Please implement your own. const arr = [1, [2], [3…

implement it by yourself

4. implement basic throttle()

2. implement curry() with placeholder support

3. implement Array.prototype.flat()