26 lines
721 B
Markdown
26 lines
721 B
Markdown
---
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title: Random integer array in range
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tags: math,random
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expertise: intermediate
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cover: blog_images/digital-nomad-11.jpg
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firstSeen: 2018-01-15T13:25:18+02:00
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lastUpdated: 2020-10-22T20:24:04+03:00
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---
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Generates an array of `n` random integers in the specified range.
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- Use `Array.from()` to create an empty array of the specific length.
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- Use `Math.random()` to generate random numbers and map them to the desired range, using `Math.floor()` to make them integers.
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```js
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const randomIntArrayInRange = (min, max, n = 1) =>
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Array.from(
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{ length: n },
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() => Math.floor(Math.random() * (max - min + 1)) + min
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);
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```
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```js
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randomIntArrayInRange(12, 35, 10); // [ 34, 14, 27, 17, 30, 27, 20, 26, 21, 14 ]
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```
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