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JavaScript (Node.js), 73 66 bytes This returns a Generator, which calculates the sequence on the fly when you use it! function*f(a){while(a>1){yield a a=~~(a%2?a**1.5:a**0.5)} yield a} Or...

posted 3y ago by forestbeasts‭ · edited 3y ago by forestbeasts‭

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#3: Post edited by

forestbeasts‭ · 2021-05-29T18:10:32Z (almost 3 years ago)
Slightly shorter solution!

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~~## JavaScript (Node.js), 73 bytes~~
This returns a [Generator](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Iterators_and_Generators), which calculates the sequence on the fly when you use it!
```js
function*f(a){while(1){yield a
if(a==1){return}
a=~~(a%2?a**1.5:a**0.5)}}
```
To use it, do something like this, which calculates the whole thing and makes it into an array.
```js
[...f(5)] // returns [ 5, 11, 36, 6, 2, 1 ]
```
---
Explanation:
```js
function* f(a) { // makes a generator function
~~while (1) {~~
yield a // return this bit of the sequence
~~if (a == 1) {~~
~~return // are we done? stop~~
}
a = ~~( // truncates the decimals? apparently? and it's shorter than Math.floor()/Math.trunc()
a%2 ? a**1.5 : a**0.5
)
}
}
```

## JavaScript (Node.js), <del>73</del> 66 bytes
This returns a [Generator](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Iterators_and_Generators), which calculates the sequence on the fly when you use it!
```js
function*f(a){while(a>1){yield a
a=~~(a%2?a**1.5:a**0.5)}
yield a}
```
Original, more aesthetically pleasing but slightly longer version:
```js
function*f(a){while(1){yield a
if(a==1){return}
a=~~(a%2?a**1.5:a**0.5)}}
```
To use it, do something like this, which calculates the whole thing and makes it into an array.
```js
[...f(5)] // returns [ 5, 11, 36, 6, 2, 1 ]
```
---
Explanation:
```js
function* f(a) { // makes a generator function
while (a > 1) {
yield a // return this bit of the sequence
a = ~~( // truncates the decimals? apparently? and it's shorter than Math.floor()/Math.trunc()
a%2 ? a**1.5 : a**0.5
)
}
yield a // return the final 1
}
```

#2: Post edited by

forestbeasts‭ · 2021-05-29T01:52:06Z (almost 3 years ago)
Language-tag the code blocks for (hopefully) proper syntax highlighting

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## JavaScript (Node.js), 73 bytes
This returns a [Generator](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Iterators_and_Generators), which calculates the sequence on the fly when you use it!
~~```~~
function*f(a){while(1){yield a
if(a==1){return}
a=~~(a%2?a**1.5:a**0.5)}}
```
To use it, do something like this, which calculates the whole thing and makes it into an array.
~~```~~
[...f(5)] // returns [ 5, 11, 36, 6, 2, 1 ]
```
---
Explanation:
~~```~~
function* f(a) { // makes a generator function
while (1) {
yield a // return this bit of the sequence
if (a == 1) {
return // are we done? stop
}
a = ~~( // truncates the decimals? apparently? and it's shorter than Math.floor()/Math.trunc()
a%2 ? a**1.5 : a**0.5
)
}
}
```

## JavaScript (Node.js), 73 bytes
This returns a [Generator](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Iterators_and_Generators), which calculates the sequence on the fly when you use it!
```js
function*f(a){while(1){yield a
if(a==1){return}
a=~~(a%2?a**1.5:a**0.5)}}
```
To use it, do something like this, which calculates the whole thing and makes it into an array.
```js
[...f(5)] // returns [ 5, 11, 36, 6, 2, 1 ]
```
---
Explanation:
```js
function* f(a) { // makes a generator function
while (1) {
yield a // return this bit of the sequence
if (a == 1) {
return // are we done? stop
}
a = ~~( // truncates the decimals? apparently? and it's shorter than Math.floor()/Math.trunc()
a%2 ? a**1.5 : a**0.5
)
}
}
```

#1: Initial revision by

forestbeasts‭ · 2021-05-29T01:51:05Z (almost 3 years ago)

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## JavaScript (Node.js), 73 bytes

This returns a [Generator](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Iterators_and_Generators), which calculates the sequence on the fly when you use it!

```
function*f(a){while(1){yield a
if(a==1){return}
a=~~(a%2?a**1.5:a**0.5)}}
```

To use it, do something like this, which calculates the whole thing and makes it into an array.
```
[...f(5)] // returns [ 5, 11, 36, 6, 2, 1 ]
```

---

Explanation:

```
function* f(a) { // makes a generator function
	while (1) {
		yield a // return this bit of the sequence
		if (a == 1) {
			return // are we done? stop
		}
		a = ~~( // truncates the decimals? apparently? and it's shorter than Math.floor()/Math.trunc()
			a%2 ? a**1.5 : a**0.5
		)
	}
}
```

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