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Ingy döt Net 2024-03-06 22:25:12 -08:00
parent ed705008a8
commit 0df55f9f24
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Task/Binary-search/Bruijn/binary-search.bruijn Normal file
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:import std/Combinator .
:import std/Math .
:import std/List .
:import std/Option .
binary-search [y [[[[[2 <? 3 none go]]]]] (+0) --(∀0) 0]
go [compare-case eq lt gt (2 !! 0) 1] /²(3 + 2)
eq some 0
lt 5 4 --0 2 1
gt 5 ++0 3 2 1
# example using sorted list of x^3, x=[-50,50]
find [[map-or "not found" [0 : (1 !! 0)] (binary-search 0 1)] lst]
lst take (+100) ((\pow (+3)) <$> (iterate ++‣ (-50)))
:test (find (+100)) ("not found")
:test ((head (find (+125))) =? (+55)) ([[1]])
:test ((head (find (+117649))) =? (+99)) ([[1]])