Actions are amazing

running js code

```js
let fib = [];
fib[0] = 0;
fib[1] = 1;
for (let i = 2; i <= 10; i++) {
fib[i] = fib[i - 2] + fib[i - 1];
}

// method two
function fibonacci(n) {
return n < 1 ? 0
: n <= 2 ? 1
: fibonacci(n - 1) + fibonacci(n - 2);
}

console.log(fibonacci(4), '\n', fib);
```