Initial commit

2.jl

@@ -0,0 +1,51 @@
+using Pkg
+Pkg.add("Match")
+using Match
+
+include("utils.jl")
+
+function solution2_1()
+    input_lines = non_empty_lines("2.data")
+
+    function parse_line(line)
+        (command, amount) = split(line, " ")
+        parsed_amount = parse(Int, amount)
+    end
+
+    map(fline->split(line, " "), input_lines)
+
+    x = 0
+    y = 0
+
+    for line in input_lines
+        (command, amount) = split(line, " ")
+        parsed_amount = parse(Int, amount)
+        @match command begin
+            "forward" => begin x += parsed_amount end
+            "up" => begin y -= parsed_amount end
+            "down" => begin y += parsed_amount end
+        end
+    end
+    (x, y, x*y)
+end
+
+function solution2_2()
+    input_lines = non_empty_lines("2.data")
+
+    aim = 0
+    x = 0
+    y = 0
+
+    for line in input_lines
+        (command, amount) = split(line, " ")
+        parsed_amount = parse(Int, amount)
+        @match command begin
+            "forward" => begin x += parsed_amount; y += parsed_amount * aim end
+            "up" => begin aim -= parsed_amount end
+            "down" => begin aim += parsed_amount end
+        end
+    end
+    (x, y, x*y)
+end
+
+(solution2_1(), solution2_2())