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fractran

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razetime 2022-03-18 11:43:02 +05:30
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# Fractran interpreter
# Helpers
_while_ ← {𝔽⍟𝔾∘𝔽_𝕣_𝔾∘𝔽⍟𝔾𝕩}
ToInt ← 10⊸×⊸+˜´·⌽-⟜'0'
ToFrac ← {
i ← ⊑/'/'=𝕩
ToInt¨i(↑⋈1⊸+⊸↓)𝕩
}
Split ← ((¬-˜⊢×·+`»⊸>)∘≠⊔⊢)
Fractran ← {
𝕊 n‿num‿den:
ind ← ⊑/0=den|num×n
⟨(n×ind⊑num)÷ind⊑den ⋄ num ⋄ den⟩
}
RunFractran ← {
steps 𝕊 inp‿prg:
num‿den ← <˘⍉>ToFrac¨' 'Split prg
step ← 1
list ← ⟨inp⟩
{
step +↩ 1
out ← Fractran 𝕩
list ∾↩ ⊑out
out
} _while_ {𝕊 n‿num‿den: (step<steps)∧ ∨´0=den|num} inp‿num‿den
list
}
seq ← 200 RunFractran 2‿"17/91 78/85 19/51 23/38 29/33 77/29 95/23 77/19 1/17 11/13 13/11 15/14 15/2 55/1"
•Out "Generated numbers: "∾•Repr seq
•Out "Primes: "∾•Repr (⌈=⌊)∘(2⊸(⋆⁼))⊸/ seq