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snippets/js/s/median.md

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+---
+title: Median
+type: snippet
+language: javascript
+tags: [math]
+cover: old-consoles
+dateModified: 2020-10-22T20:23:47+03:00
+---
+
+Calculates the median of an array of numbers.
+
+- Find the middle of the array, use `Array.prototype.sort()` to sort the values.
+- Return the number at the midpoint if `Array.prototype.length` is odd, otherwise the average of the two middle numbers.
+
+```js
+const median = arr => {
+  const mid = Math.floor(arr.length / 2),
+    nums = [...arr].sort((a, b) => a - b);
+  return arr.length % 2 !== 0 ? nums[mid] : (nums[mid - 1] + nums[mid]) / 2;
+};
+```
+
+```js
+median([5, 6, 50, 1, -5]); // 5
+```