Day 5

5.jl

@@ -0,0 +1,20 @@
+
+txt = strip(read("input/5", String))
+rules, updates = map(x -> map(x -> map(x -> parse(Int, x), split(x, Regex("[,|]"))), split(x, "\n")), split(txt, "\n\n"))
+
+partOne, partTwo = 0, 0
+
+isOrdered(update) = all(p -> all(after -> [p[2],after] in values(rules), update[p[1]+1:end]), enumerate(update))
+middle(v) = v[length(v)÷2+1]
+
+for update in updates
+	if isOrdered(update)
+		global partOne += middle(update)
+	else
+		sort!(update, lt = (a, b) -> isOrdered([a, b]))
+		global partTwo += middle(update)
+	end
+end
+
+@show partOne, partTwo
+