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2017-12-26 13:27:18 +00:00
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@ -586,9 +586,16 @@ This method also works with strings.</p>
// sample([3, 7, 9, 11]) -&gt; 9
</code></pre>
</div></div><br/><div class="card fluid"><div class="section double-padded"><h3 id="shuffle">shuffle</h3></div><div class="section double-padded">
<p>Randomizes the order of the values of an array.</p>
<p>Use <code>Array.sort()</code> to reorder elements, using <code>Math.random()</code> in the comparator.</p>
<pre><code class="language-js">const shuffle = arr =&gt; arr.sort(() =&gt; Math.random() - 0.5);
<p>Randomizes the order of the values of an array, in place.</p>
<p>Uses the Fisher-Yates algoritm to reorder the elements of the array, based on the <a href="https://github.com/lodash/lodash/blob/b2ea6b1cd251796dcb5f9700c4911a7b6223920b/shuffle.js">Lodash implimentation</a></p>
<pre><code class="language-js">const shuffle = ([...arr]) =&gt; {
let m = arr.length;
while (m) {
const i = Math.floor(Math.random() * m--);
[arr[m], arr[i]] = [arr[i], arr[m]];
}
return arr;
};
// shuffle([1,2,3]) -&gt; [2,3,1]
</code></pre>
</div></div><br/><div class="card fluid"><div class="section double-padded"><h3 id="similarity">similarity</h3></div><div class="section double-padded">