Picks an arbitrary subsequence.
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> Similar: [subsequence], [subsequences], [hasSubsequence], [searchSubsequence].

> This is part of package [extra-array].

[extra-array]: https://www.npmjs.com/package/extra-array

<br>

```javascript
array.subsequence(x, [n], [r]);
// x: an array
// n: number of values (-1 => any)
// r: random seed 0->1
```

```javascript
const array = require("extra-array");

var x = [1, 2, 3, 4, 5];
array.subsequence(x);
// [ 1, 2 ]

array.subsequence(x, 3, 0.3);
// [ 1, 3, 5 ]

array.subsequence(x, 2, 0.3);
// [ 3, 5 ]
```

<br>
<br>


## References

- [shuffle: PHP](https://www.php.net/manual/en/function.shuffle.php)
- [shuffle-seed: @webcaetano](https://www.npmjs.com/package/shuffle-seed)
- [shuffle-array: @pazguille](https://www.npmjs.com/package/shuffle-array)
- [Seeding the random number generator in Javascript](https://stackoverflow.com/a/47593316/1413259)

[subsequence]: https://github.com/nodef/extra-array/wiki/subsequence
[subsequences]: https://github.com/nodef/extra-array/wiki/subsequences
[hasSubsequence]: https://github.com/nodef/extra-array/wiki/hasSubsequence
[searchSubsequence]: https://github.com/nodef/extra-array/wiki/searchSubsequence