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FizzBuzz as infinite sequence in Clojure/Haskell
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> fizzBuzz = map (\(f, b, n) -> maybe "" id f ++ maybe "" id b ++ (if null f && null b then show n else "")) $ zip3 (cycle [Nothing, Nothing, Just "Fizz"]) (cycle [Nothing, Nothing, Nothing, Nothing, Just "Buzz"]) [1..] | |
fizzBuzz :: [[Char]] | |
[Prelude] | |
> take 30 fizzBuzz | |
["1","2","Fizz","4","Buzz","Fizz","7","8","Fizz","Buzz","11","Fizz","13","14","FizzBuzz","16","17","Fizz","19","Buzz","Fizz","22","23","Fizz","Buzz","26","Fizz","28","29","FizzBuzz"] | |
it :: [[Char]] | |
[Prelude] | |
> import Data.Maybe | |
[Prelude Data.Maybe] | |
> fizzBuzz' = map (\(f, b, n) -> fromMaybe "" f ++ fromMaybe "" b ++ (if null f && null b then show n else "")) $ zip3 (cycle [Nothing, Nothing, Just "Fizz"]) (cycle [Nothing, Nothing, Nothing, Nothing, Just "Buzz"]) [1..] | |
fizzBuzz' :: [[Char]] | |
[Prelude Data.Maybe] | |
> take 30 fizzBuzz' | |
["1","2","Fizz","4","Buzz","Fizz","7","8","Fizz","Buzz","11","Fizz","13","14","FizzBuzz","16","17","Fizz","19","Buzz","Fizz","22","23","Fizz","Buzz","26","Fizz","28","29","FizzBuzz"] | |
it :: [[Char]] | |
[Prelude Data.Maybe] | |
> fizzBuzz'' = map (\(f, b, n) -> f ++ b ++ (if null f && null b then show n else "")) $ zip3 (cycle ["", "", "Fizz"]) (cycle ["", "", "", "", "Buzz"]) [1..] | |
fizzBuzz'' :: [[Char]] | |
[Prelude Data.Maybe] | |
> take 30 fizzBuzz'' | |
["1","2","Fizz","4","Buzz","Fizz","7","8","Fizz","Buzz","11","Fizz","13","14","FizzBuzz","16","17","Fizz","19","Buzz","Fizz","22","23","Fizz","Buzz","26","Fizz","28","29","FizzBuzz"] | |
it :: [[Char]] | |
[Prelude Data.Maybe] |
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dev> (defn fizzbuzz-seq [] | |
(map #(str %1 %2 (when-not (or %1 %2) %3)) | |
(cycle [nil nil "Fizz"]) | |
(cycle [nil nil nil nil "Buzz"]) | |
(rest (range)))) | |
#'dev/fizzbuzz-seq | |
dev> (take 30 (fizzbuzz-seq)) | |
("1" | |
"2" | |
"Fizz" | |
"4" | |
"Buzz" | |
"Fizz" | |
"7" | |
"8" | |
"Fizz" | |
"Buzz" | |
"11" | |
"Fizz" | |
"13" | |
"14" | |
"FizzBuzz" | |
"16" | |
"17" | |
"Fizz" | |
"19" | |
"Buzz" | |
"Fizz" | |
"22" | |
"23" | |
"Fizz" | |
"Buzz" | |
"26" | |
"Fizz" | |
"28" | |
"29" | |
"FizzBuzz") |
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cf. https://rosettacode.org/wiki/FizzBuzz#Clojure