Files
30-seconds-of-code/snippets/minN.md
Mathias Bynens 8ee50178f3 Avoid confusing prototype methods for static methods
Correct: `Array.from()` (it’s a static method)
Incorrect: `Array.join()` (doesn’t exist; it’s a prototype method)

This patch uses the common `#` syntax to denote `.prototype.`.
2018-09-28 15:44:12 -04:00

17 lines
612 B
Markdown

### minN
Returns the `n` minimum elements from the provided array.
If `n` is greater than or equal to the provided array's length, then return the original array (sorted in ascending order).
Use `Array.prototype.sort()` combined with the spread operator (`...`) to create a shallow clone of the array and sort it in ascending order.
Use `Array.prototype.slice()` to get the specified number of elements.
Omit the second argument, `n`, to get a one-element array.
```js
const minN = (arr, n = 1) => [...arr].sort((a, b) => a - b).slice(0, n);
```
```js
minN([1, 2, 3]); // [1]
minN([1, 2, 3], 2); // [1,2]
```