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panadestein‭

Physicist working on quantum computing. Here for golfing in array languages, mainly BQN.

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BQN, 32 bytes (']'∾˜'['∾@+45+50↑79⥊˜·⌊×⟜50÷⊢)´ A tacit function. A pity, I had to add the parenthesis so I can fold the list of values that represent the fraction. Otherwise, assuming left and ...

posted 12mo ago by panadestein‭

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Challenges Borromean coprimes

BQN, 27 bytes •math.GCD{∧´∘⥊(1=𝔽´)∧1<𝔽⌜˜} Booleans in BQN are the integers 0‿1. Try all test cases on the: BQN online REPL

posted 12mo ago by panadestein‭ · edited 12mo ago by panadestein‭

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Challenges Partial Sums of Harmonic Series

BQN, 23 bytes {𝕩{𝕊⍟(𝕗>·+´∘÷1+↕)𝕩+1}1} This recursion is more complicated than it should, but I managed to keep it purely functional. I use a modifier to mimic passing a left argument, that's...

posted 12mo ago by panadestein‭

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Challenges Find all unique quintuplets in an array that sum to a given target

BQN, 31 bytes {⍷(+´⊸=⟜𝕩∧5=≠)¨⊸/⥊(↕2¨𝕨)/¨<∧𝕨}´ This block function returns the empty array ⟨⟩ if the conditions cannot be satisfied. It works by sorting the input list to prevent having to fi...

posted 12mo ago by panadestein‭

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Challenges Expand a polynomial

BQN, 15 bytes ⊢(«∘⊢-×)´˜1∾˜≠˜ A 3-train (fold with initial): we zero list of the same length as the input with a one appended (the base case), then for each root we do the multiplication by the...

posted 11mo ago by panadestein‭

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