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BQN, 13 bytesSBCS ∧´0≠⊢|˜·×˜2+↕ Run online! A train submission. It's 2 bytes shorter than the lambda version {∧´0≠𝕩|˜×˜2+↕𝕩}, due to omitting curly braces. The idea is similar to ruby: ran...
Answer
#1: Initial revision
by
Razetime
·
2022-01-08T04:15:26Z (almost 3 years ago)
# [BQN](https://mlochbaum.github.io/BQN/), 13 bytes<sup>[SBCS](https://github.com/mlochbaum/BQN/blob/master/commentary/sbcs.bqn)</sup>
```none
∧´0≠⊢|˜·×˜2+↕
```
[Run online!](https://mlochbaum.github.io/BQN/try.html#code=RiDihpAg4oinwrQw4omg4oqifMucwrfDl8ucMivihpUKCj7ii4jin5xGwqggMSvihpUxMA==)
A train submission. It's 2 bytes shorter than the lambda version `{∧´0≠𝕩|˜×˜2+↕𝕩}`, due to omitting curly braces.
The idea is similar to ruby:
- range 2..n+1
- square it, then modulo n
- are all remainders ≠ 0?