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snippets/random-int-array-in-range.md

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