From 8008efa1d19d7a9e6dfe9a87f0d1638597988f65409333dddf313b740dd068be Mon Sep 17 00:00:00 2001
From: nazrin <nazrin7693@proton.me>
Date: Thu, 5 Dec 2024 20:55:54 +0000
Subject: [PATCH] Day 4

---
 4.jl | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 4.jl

diff --git a/4.jl b/4.jl
new file mode 100644
index 0000000..cbabb31
--- /dev/null
+++ b/4.jl
@@ -0,0 +1,18 @@
+
+const matchEitherDir(a) = fn(b) = all(a .== b) || all(reverse(a) .== b)
+
+const d = [ collect(line) for line in readlines("input/4") ]
+const size = length(d)
+
+partOne, partTwo = 0, 0
+
+for y in 1:size
+	for x in 1:size
+		grid(dirs, range) = ( ( try d[y+i*u][x+i*v] catch end for i in range ) for (u,v) in dirs )
+		global partOne += count(matchEitherDir(collect("XMAS")), grid([ (0, 1), (1, 0), (1, 1), (-1, 1) ], 0:3))
+		global partTwo += all(matchEitherDir(collect("MAS")), grid([ (-1, 1), (1, 1) ], -1:1))
+	end
+end
+
+@show partOne, partTwo
+