Add days 3, 4 and 5
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6 changed files with 169 additions and 0 deletions
15
Day3/Day3.py
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15
Day3/Day3.py
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import numpy
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import re
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RE = re.compile(r"#(\d+) @ (\d+),(\d+): (\d+)x(\d+)")
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with open("Day3.in", "r") as f:
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ROWS = [[int(i) for i in RE.match(line).groups()] for line in f]
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FABRIC = numpy.zeros((1000, 1000), dtype=numpy.uint8)
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for _, x, y, w, h in ROWS:
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FABRIC[x:x+w, y:y+h] += 1
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for i, x, y, w, h in ROWS:
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if (FABRIC[x:x+w, y:y+h] == 1).all():
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print(i)
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break
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10
Day3/Day3B.hs
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10
Day3/Day3B.hs
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#!/usr/bin/env stack
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-- stack --resolver lts-12.5 script
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-- WORK IN PROGRESS
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module Day3B where
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import Text.Regex.TDFA
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main :: IO ()
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main = print $ ("#1 @ 662,777: 18x27" =~ "#(\\d+) @ (\\d+),(\\d+): (\\d+)x(\\d+)" :: (String, String, String, String, String))
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51
Day4/Day4.py
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51
Day4/Day4.py
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from pprint import pprint
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from datetime import timedelta
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import numpy
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import dateutil.parser
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import re
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from collections import defaultdict
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guards_asleep = set()
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guard_sleep_duration = defaultdict(int)
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guard_sleep_times = defaultdict(lambda: numpy.zeros(24 * 60, dtype=numpy.int))
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with open("Day4.in", "r") as f:
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lines = sorted(f.readlines())
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RE_TIME = re.compile(r"\[(.*)\]")
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RE_SHIFT = re.compile(r".*#(\d+).*")
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current_guard = None
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last_minute = None
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for line in lines:
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time_match = RE_TIME.match(line)
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time = dateutil.parser.parse(time_match.group(1))
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minute = time.time().minute
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if last_minute is None:
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last_minute = minute
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delta = minute - last_minute
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if current_guard in guards_asleep:
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guard_sleep_duration[current_guard] += delta
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for i in range(last_minute, minute):
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guard_sleep_times[current_guard][i] += 1
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last_minute = minute
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match = RE_SHIFT.match(line)
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if match:
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current_guard = int(match.group(1))
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if "wakes up" in line:
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guards_asleep.discard(current_guard)
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if "falls asleep" in line:
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guards_asleep.add(current_guard)
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a = numpy.array([numpy.insert(value, 0, key) for (key, value) in guard_sleep_times.items()])
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x, y = numpy.unravel_index(a[:, 1:].argmax(), a[:, 1:].shape)
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guard = a[x, 0]
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print(guard, y, guard * y)
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49
Day4/Day4A.hs
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Day4/Day4A.hs
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#!/usr/bin/env stack
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-- stack --resolver lts-12.5 script
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-- WORK IN PROGRESS
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module Day4A where
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import Data.List (sort)
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import Data.Maybe (listToMaybe, mapMaybe, fromJust)
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import Data.Time.Clock
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import Data.Time.Format
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import Debug.Trace
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import Text.Regex.TDFA
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import qualified Data.IntMap as IM
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import qualified Data.Vector as V
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handleGuardSwitch :: String -> Maybe Int
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handleGuardSwitch x = unwrap <$> matches
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where matches = listToMaybe (x =~ "#([0-9]+)")
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unwrap (_:id:_) = read id
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parseGuardWake :: String -> Maybe Int
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parseGuardWake x = unwrap <$> listToMaybe (x =~ "(\\d{2})\\] wakes up")
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where unwrap (_:y:_) = read y
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parseGuardSleep :: String -> Maybe Int
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parseGuardSleep x = unwrap <$> listToMaybe (x =~ "(\\d{2})\\] falls asleep")
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where unwrap (_:y:_) = read y
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handle' :: [String] -> Maybe Int -> IM.IntMap V.Vector -> Int -> Bool -> IM.IntMap V.Vector
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handle' [] _ minutes _ _ = minutes
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handle' (x:xs) guard minutes minute asleep
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| Just id <- handleGuardSwitch x = handle' xs (Just id) minutes minute asleep
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| Just nextMinute <- parseGuardSleep x = handle' xs guard minutes nextMinute True
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| Just nextMinute <- parseGuardWake x =
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case (nextMinute < minute) of
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True -> handle' (x:xs) guard minutes (minute + 1) True
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False -> handle' xs guard minutes minute False
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| otherwise =
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handle' xs guard minutes (minute + 1) asleep
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handle :: [String] -> IM.IntMap V.Vector
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handle lines = handle' lines Nothing IM.empty 0 False
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main :: IO ()
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main = interact $ show . handle . sort . lines
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23
Day5/Day5A.hs
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23
Day5/Day5A.hs
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#!/usr/bin/env stack
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-- stack --resolver lts-12.5 script
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module Day5A where
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import Data.Char
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import qualified Data.Foldable as F
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invertCase :: Char -> Char
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invertCase c
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| isUpper c = toLower c
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| otherwise = toUpper c
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calcLength :: String -> String -> Int
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calcLength ys (x:y:xs)
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| x == invertCase y = case length ys of
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0 -> calcLength ys xs
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_ -> calcLength (tail ys) (head ys:xs)
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| otherwise = calcLength (x:ys) (y:xs)
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calcLength ys [x] = calcLength (x:ys) []
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calcLength ys [] = length ys
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main :: IO ()
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main = interact $ show . calcLength "" . filter (/= '\n')
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21
Day5/Day5B.hs
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21
Day5/Day5B.hs
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#!/usr/bin/env stack
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-- stack --resolver lts-12.5 script
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module Day5B where
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import Day5A (calcLength)
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import Data.Char
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alphabet :: String
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alphabet = "abcdefghijklmnopqrstuvwxyz"
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caseNEq :: Char -> Char -> Bool
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caseNEq x y = toLower x /= toLower y
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mapper :: String -> Char -> Int
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mapper s x = calcLength "" $ filter (caseNEq x) s
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findShortest :: String -> Int
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findShortest s = minimum $ map (mapper s) alphabet
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main :: IO ()
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main = interact $ show . findShortest . filter (/='\n')
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