8ee50178f3
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.`.
19 lines
513 B
Markdown
19 lines
513 B
Markdown
### fibonacci
|
|
|
|
Generates an array, containing the Fibonacci sequence, up until the nth term.
|
|
|
|
Create an empty array of the specific length, initializing the first two values (`0` and `1`).
|
|
Use `Array.prototype.reduce()` to add values into the array, using the sum of the last two values, except for the first two.
|
|
|
|
```js
|
|
const fibonacci = n =>
|
|
Array.from({ length: n }).reduce(
|
|
(acc, val, i) => acc.concat(i > 1 ? acc[i - 1] + acc[i - 2] : i),
|
|
[]
|
|
);
|
|
```
|
|
|
|
```js
|
|
fibonacci(6); // [0, 1, 1, 2, 3, 5]
|
|
```
|