From 98276d08549b8b9782dc06f6dbf8c2c03330a8fa78ef67522f7b4ab277e86339 Mon Sep 17 00:00:00 2001
From: nazrin <nazrin7693@proton.me>
Date: Sun, 8 Dec 2024 21:13:18 +0000
Subject: [PATCH] Day 7

---
 7.jl | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 7.jl

diff --git a/7.jl b/7.jl
new file mode 100644
index 0000000..ad76aa5
--- /dev/null
+++ b/7.jl
@@ -0,0 +1,24 @@
+const equations::Vector{Vector{Int}} = [ map(x -> parse(Int, x), split(line, Regex("[:\\s]+"))) for line in readlines("input/7") ]
+
+partOne, partTwo = 0, 0
+
+concat(a::Number, b::Number) = a * 10^ndigits(b) + b
+
+for (target,nums) in Iterators.peel.(equations)
+	nums = collect(nums)
+	function testCase(funcs::Tuple, p = 1, sum = 0)::Bool
+		if p > length(nums)
+			return (sum == target) 
+		end
+		return any(testCase(funcs, p+1, fn(sum, nums[p])) for fn in funcs)
+	end
+	if testCase((+, *))
+		global partOne += target
+	end
+	if testCase((+, *, concat))
+		global partTwo += target
+	end
+end
+
+@show partOne, partTwo
+