2024-01 in haskell
This commit is contained in:
parent
72a9d740bf
commit
e51c318b87
4 changed files with 1099 additions and 0 deletions
6
2024/01-Historian_Hysteria/example
Normal file
6
2024/01-Historian_Hysteria/example
Normal file
|
@ -0,0 +1,6 @@
|
|||
3 4
|
||||
4 3
|
||||
2 5
|
||||
1 3
|
||||
3 9
|
||||
3 3
|
46
2024/01-Historian_Hysteria/first.hs
Normal file
46
2024/01-Historian_Hysteria/first.hs
Normal file
|
@ -0,0 +1,46 @@
|
|||
-- requires cabal install --lib megaparsec parser-combinators heap vector
|
||||
module Main (main) where
|
||||
|
||||
import Control.Monad (void, when)
|
||||
import qualified Data.List as L
|
||||
import Data.Void (Void)
|
||||
import Text.Megaparsec
|
||||
import Text.Megaparsec.Char
|
||||
|
||||
exampleExpectedOutput = 11
|
||||
|
||||
type Pair = (Int, Int)
|
||||
type Input = [Pair]
|
||||
|
||||
type Parser = Parsec Void String
|
||||
|
||||
parseNumber :: Parser Int
|
||||
parseNumber = read <$> some digitChar <* optional hspace
|
||||
|
||||
parsePair :: Parser Pair
|
||||
parsePair = (,) <$> parseNumber
|
||||
<*> parseNumber
|
||||
|
||||
parseInput' :: Parser Input
|
||||
parseInput' = some (parsePair <* eol) <* eof
|
||||
|
||||
parseInput :: String -> IO Input
|
||||
parseInput filename = do
|
||||
input <- readFile filename
|
||||
case runParser parseInput' filename input of
|
||||
Left bundle -> error $ errorBundlePretty bundle
|
||||
Right input' -> return input'
|
||||
|
||||
compute :: Input -> Int
|
||||
compute input = sum compute'
|
||||
where
|
||||
(l, r) = unzip input
|
||||
compute' = fmap abs $ zipWith (-) (L.sort l) (L.sort r)
|
||||
|
||||
main :: IO ()
|
||||
main = do
|
||||
example <- parseInput "example"
|
||||
let exampleOutput = compute example
|
||||
when (exampleOutput /= exampleExpectedOutput) (error $ "example failed: got " ++ show exampleOutput ++ " instead of " ++ show exampleExpectedOutput)
|
||||
input <- parseInput "input"
|
||||
print $ compute input
|
1000
2024/01-Historian_Hysteria/input
Normal file
1000
2024/01-Historian_Hysteria/input
Normal file
File diff suppressed because it is too large
Load diff
47
2024/01-Historian_Hysteria/second.hs
Normal file
47
2024/01-Historian_Hysteria/second.hs
Normal file
|
@ -0,0 +1,47 @@
|
|||
-- requires cabal install --lib megaparsec parser-combinators heap vector
|
||||
module Main (main) where
|
||||
|
||||
import Control.Monad (void, when)
|
||||
import qualified Data.List as L
|
||||
import Data.Void (Void)
|
||||
import Text.Megaparsec
|
||||
import Text.Megaparsec.Char
|
||||
|
||||
exampleExpectedOutput = 31
|
||||
|
||||
type Pair = (Int, Int)
|
||||
type Input = [Pair]
|
||||
|
||||
type Parser = Parsec Void String
|
||||
|
||||
parseNumber :: Parser Int
|
||||
parseNumber = read <$> some digitChar <* optional hspace
|
||||
|
||||
parsePair :: Parser Pair
|
||||
parsePair = (,) <$> parseNumber
|
||||
<*> parseNumber
|
||||
|
||||
parseInput' :: Parser Input
|
||||
parseInput' = some (parsePair <* eol) <* eof
|
||||
|
||||
parseInput :: String -> IO Input
|
||||
parseInput filename = do
|
||||
input <- readFile filename
|
||||
case runParser parseInput' filename input of
|
||||
Left bundle -> error $ errorBundlePretty bundle
|
||||
Right input' -> return input'
|
||||
|
||||
compute :: Input -> Int
|
||||
compute input = L.foldl' similarity 0 l
|
||||
where
|
||||
(l, r) = unzip input
|
||||
similarity :: Int -> Int -> Int
|
||||
similarity acc i = acc + i * (length $ L.elemIndices i r)
|
||||
|
||||
main :: IO ()
|
||||
main = do
|
||||
example <- parseInput "example"
|
||||
let exampleOutput = compute example
|
||||
when (exampleOutput /= exampleExpectedOutput) (error $ "example failed: got " ++ show exampleOutput ++ " instead of " ++ show exampleExpectedOutput)
|
||||
input <- parseInput "input"
|
||||
print $ compute input
|
Loading…
Add table
Reference in a new issue