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17 lines
412 B
Plaintext
17 lines
412 B
Plaintext
$ 0 3 6 9 12 15
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$ 1 3 6 10 15 21
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$ 10 13 16 21 30 45
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TestInput ←
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Parse ← ⊜(⊜⋕≠@ .)≠@\n.
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Differences ← ⍢(⊂:□≡/-◫2°□⊢⇌.)(¬≍⊚⧻.°□⊢⇌)¤□
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NextElement ← /+≡(⊢⇌)Differences
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PrevElement ← /-⇌≡⊢Differences
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/+≡NextElement Parse TestInput
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/+≡PrevElement Parse TestInput
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/+≡NextElement Parse &fras "day09.in"
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/+≡PrevElement Parse &fras "day09.in"
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