27 lines
675 B
Markdown
27 lines
675 B
Markdown
---
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title: Initialize n-dimensional array
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tags: array,recursion
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expertise: intermediate
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firstSeen: 2018-04-14T10:52:39+03:00
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lastUpdated: 2020-10-22T20:23:47+03:00
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---
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Create a n-dimensional array with given value.
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- Use recursion.
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- Use `Array.from()`, `Array.prototype.map()` to generate rows where each is a new array initialized using `initializeNDArray()`.
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```js
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const initializeNDArray = (val, ...args) =>
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args.length === 0
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? val
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: Array.from({ length: args[0] }).map(() =>
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initializeNDArray(val, ...args.slice(1))
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);
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```
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```js
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initializeNDArray(1, 3); // [1, 1, 1]
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initializeNDArray(5, 2, 2, 2); // [[[5, 5], [5, 5]], [[5, 5], [5, 5]]]
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```
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