### Initialize array with values

Use `Array(n)` to create an array of the desired length, `fill(v)` to fill it with the desired values.
You can omit `value` to use a default value of `0`.

```js
const initializeArray = (n, value = 0) => Array(n).fill(value);
// initializeArray(5, 2) -> [2,2,2,2,2]
```