14 lines
391 B
Markdown
14 lines
391 B
Markdown
### initialize2DArray
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Initializes a 2D array of given width and height and value.
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Use `Array.map()` to generate h rows where each is a new array of size w initialize with value. If the value is not provided, default to `null`.
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```js
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const initialize2DArray = (w, h, val = null) => Array(h).fill().map(() => Array(w).fill(val));
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```
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```js
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initialize2DArray(2, 2, 0) // [[0,0], [0,0]]
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```
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