AoC 2023HEADmain

6 files changed, 208 insertions, 0 deletions

diff --git a/2023/day03/Main.hi b/2023/day03/Main.hi
new file mode 100644
index 0000000..4e74a96
--- /dev/null
+++ b/2023/day03/Main.hi
diff --git a/2023/day03/Main.hs b/2023/day03/Main.hs
new file mode 100644
index 0000000..d9d8f4b
--- /dev/null
+++ b/2023/day03/Main.hs
@@ -0,0 +1,28 @@
+import Data.Char
+import Data.List
+
+-- findBegin :: ((Int, Int), Char) -> [((Int, Int), Char)] -> ((Int, Int), Char)
+findBegin s@((x,y), c) dict = case filter (\(p,_) -> p == (x,y-1)) dict of
+  [] -> s
+  n:xs -> findBegin n dict
+
+main :: IO ()
+main = do
+  inputLines <- lines <$> getContents
+
+  let distances = concat (map (\x -> (map (\y -> (x,y)) [-1..1])) [-1..1])
+
+  let numInputLines = zip [0..] (map (zip [0..]) inputLines)
+  let charCoords = concat (map (\(x, l) -> (map (\(y, c) -> ((x,y),c)) l)) numInputLines)
+  let symbols = map (\(p, c) -> p) (filter (\(_,c) -> not (c == '.' || isDigit c)) charCoords)
+  let digits = filter (\(_,c) -> isDigit c) charCoords
+  let serialChars = filter (\((x,y),_) -> any (\x -> elem x symbols) (map (\(x1,y2) -> (x + x1, y + y2)) distances)) digits
+  let serialBegins = nub $ map (\x -> findBegin x digits) serialChars
+  let serialNumbers = map (\((x,y), c) -> read (takeWhile isDigit (drop y (inputLines!!x))) :: Integer) serialBegins
+  -- print charCoords 
+  -- print symbols
+  print (sum serialNumbers)
+  -- convert input to [((x,y), Char)]
+
+  -- mapM_ putStrLn inputLines
+
diff --git a/2023/day03/Main2.hi b/2023/day03/Main2.hi
new file mode 100644
index 0000000..4e74a96
--- /dev/null
+++ b/2023/day03/Main2.hi
diff --git a/2023/day03/Main2.hs b/2023/day03/Main2.hs
new file mode 100644
index 0000000..d7329f6
--- /dev/null
+++ b/2023/day03/Main2.hs
@@ -0,0 +1,30 @@
+import Data.Char
+import Data.List (nub, sort)
+
+findBegin s@((x,y), c) dict = case filter (\(p,_) -> p == (x,y-1)) dict of
+  [] -> s
+  n:xs -> findBegin n dict
+
+uniqueLists :: [[((Int, Int), Char)]] -> [[((Int, Int), Char)]]
+uniqueLists = nub . map sort
+
+getNumber :: ((Int, Int), Char) -> [String] -> Int
+getNumber ((x,y),c) dict = read (takeWhile isDigit (drop y (dict!!x))) :: Int
+
+main :: IO ()
+main = do
+  inputLines <- lines <$> getContents
+
+  let distances = concat (map (\x -> (map (\y -> (x,y)) [-1..1])) [-1..1])
+
+  let numInputLines = zip [0..] (map (zip [0..]) inputLines)
+  let charCoords = concat (map (\(x, l) -> (map (\(y, c) -> ((x,y),c)) l)) numInputLines)
+  let gears = map (\(p, c) -> p) (filter (\(_,c) -> c == '*') charCoords)
+  let digits = filter (\(_,c) -> isDigit c) charCoords
+  let gearsChars = map (\(x,y) -> (filter (\(p,xd) -> (elem p (map (\(x1,y1) -> (x+x1,y+y1)) distances))) digits)) gears
+
+  let gearsBegins = uniqueLists $ map (\gearChars -> (nub (map (\x -> (findBegin x digits)) gearChars))) gearsChars
+  let twoGears = filter (\x -> length x == 2) gearsBegins
+  let serialNumbers = map (\gs -> product $ map (\g -> getNumber g inputLines) gs) twoGears
+  print (sum serialNumbers)
+
diff --git a/2023/day03/example.txt b/2023/day03/example.txt
new file mode 100644
index 0000000..b20187f
--- /dev/null
+++ b/2023/day03/example.txt
@@ -0,0 +1,10 @@
+467..114..
+...*......
+..35..633.
+......#...
+617*......
+.....+.58.
+..592.....
+......755.
+...$.*....
+.664.598..
diff --git a/2023/day03/input.txt b/2023/day03/input.txt
new file mode 100644
index 0000000..0d465e9
--- /dev/null
+++ b/2023/day03/input.txt
@@ -0,0 +1,140 @@
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