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INVESTIGATE: How to spell the D2 combinator #33

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codereport opened this issue Mar 11, 2024 · 1 comment
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INVESTIGATE: How to spell the D2 combinator #33

codereport opened this issue Mar 11, 2024 · 1 comment
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While trying to solve Leetcode 3074. Apple Redistribution into Boxes, couldn't figure out how to spell the D2 combinator.

Solutions in BQN:

1‿3‿2 (1+·+´+´⊸>⟜(+`∨)) 4‿3‿1‿5‿2
1‿3‿2 {1++´(+´𝕨)>+`∨𝕩} 4‿3‿1‿5‿2

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@codereport codereport added the investigate This doesn't seem right label Mar 11, 2024
@codereport codereport self-assigned this Mar 11, 2024
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D2 is spelt: l f : g : r h where d2(f, g, h) = x, y -> g(f(x), h(y)).

The solution to the stated problem is below. Note the combinator tree is all wrong.
image

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