Comments on Make my number a set
Parent
Make my number a set
Natural to set
(set meaning an unordered collection with no duplicates, though answers may use and output lists instead)
Recently I was brainstorming what a language with only (arbitrarily nested) sets would be like. A number is represented with a set of that many elements. The elements need to be different, which leads to this definition:
Definition
- The set representation of $0$ is the empty set.
- The set representation of any other integer $n$ is the set of the set representations of all positive integers less than $n$, including zero.
- Negative, complex, or rational numbers do not need to be handled.
- Your full program or function is to convert from a positive integer to a set or list.
Examples
0 {}
1 {{}}
2 {{}, {{}}}
3 {{}, {{}}, {{}, {{}}}}
[JavaScript (V8)], 32 bytes …
3y ago
BQN, 7 6 bytesSBCS ``` ≢↑∘ …
3y ago
[APL (ngn/apl)], 6 bytes …
3y ago
[Python 3], 34 bytes …
2y ago
Japt, 3 bytes ``` ÆßX ``` …
3y ago
[Jelly], 3 bytes Ḷ߀ …
3y ago
[Haskell], 51 31 bytes Save …
3y ago
[Ruby], 27 bytes ```ruby - …
2y ago
Jq, 19 bytes ```python def …
3y ago
Ruby, 23 bytes ```ruby ->n …
2y ago
Post
Japt, 3 bytes
ÆßX
Try it online! (don't mind the -Q
This is Shaggy's solution.
ÆßX
Æ Make a range [0, input) and map each number X:
ß Run this program again on
X
Japt, 11 8 bytes
Saved 3 bytes thanks to Shaggy! (Shaggy also has a 3-byter ready)
gA=_o mA
This is practically a port of Razetime's answer, which you should upvote!
gA=_o mA
g Apply the following function to the input
A= It's a recursive function, so assign it to the variable A
_o Make a range [0, Z), where Z is the input
mA And map every number in that range to A again
0 comment threads