22 lines
526 B
Markdown
22 lines
526 B
Markdown
---
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title: median
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tags: math,array,intermediate
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---
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Returns the median of an array of numbers.
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- Find the middle of the array, use `Array.prototype.sort()` to sort the values.
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- Return the number at the midpoint if `length` is odd, otherwise the average of the two middle numbers.
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```js
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const median = arr => {
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const mid = Math.floor(arr.length / 2),
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nums = [...arr].sort((a, b) => a - b);
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return arr.length % 2 !== 0 ? nums[mid] : (nums[mid - 1] + nums[mid]) / 2;
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};
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```
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```js
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median([5, 6, 50, 1, -5]); // 5
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```
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