day12

day12/day.go

@@ -0,0 +1,69 @@
+package day12
+
+import (
+	"strconv"
+	"strings"
+	"tools"
+)
+
+func run(code []string, register map[string]int) map[string]int {
+	index := 0
+	for index < len(code) {
+		instr := strings.Split(code[index], " ")
+		switch instr[0] {
+		case "cpy":
+			value, err := strconv.Atoi(instr[1])
+			if err != nil {
+				register[instr[2]] = register[instr[1]]
+			} else {
+				register[instr[2]] = value
+			}
+			index++
+		case "inc":
+			register[instr[1]]++
+			index++
+		case "dec":
+			register[instr[1]]--
+			index++
+		case "jnz":
+			value, err := strconv.Atoi(instr[1])
+			if err != nil {
+				value = register[instr[1]]
+			}
+			if value == 0 {
+				index++
+			} else {
+				jump, _ := strconv.Atoi(instr[2])
+				index += jump
+			}
+		}
+	}
+
+	return register
+}
+
+func Part1(puzzle tools.AoCPuzzle) interface{} {
+	register := map[string]int{
+		"a": 0,
+		"b": 0,
+		"c": 0,
+		"d": 0,
+	}
+
+	register = run(puzzle.GetInputArray(), register)
+
+	return register["a"]
+}
+
+func Part2(puzzle tools.AoCPuzzle) interface{} {
+	register := map[string]int{
+		"a": 0,
+		"b": 0,
+		"c": 1,
+		"d": 0,
+	}
+
+	register = run(puzzle.GetInputArray(), register)
+
+	return register["a"]
+}

inputs/12

@@ -0,0 +1,23 @@
+cpy 1 a
+cpy 1 b
+cpy 26 d
+jnz c 2
+jnz 1 5
+cpy 7 c
+inc d
+dec c
+jnz c -2
+cpy a c
+inc a
+dec b
+jnz b -2
+cpy c b
+dec d
+jnz d -6
+cpy 16 c
+cpy 17 d
+inc a
+dec d
+jnz d -2
+dec c
+jnz c -5

inputs/12_test

@@ -0,0 +1,6 @@
+cpy 41 a
+inc a
+inc a
+dec a
+jnz a 2
+dec a

main.go

@@ -11,6 +11,7 @@ import (
 	"aoc2016/day08"
 	"aoc2016/day09"
 	"aoc2016/day10"
+	"aoc2016/day12"
 	"flag"
 	"fmt"
 	"os"
@@ -39,7 +40,7 @@ func initDayFunctions() {
 		9:  {1: day09.Part1, 2: day09.Part2},
 		10: {1: day10.Part1, 2: day10.Part2},
 		//		11: {1: day11.Part1, 2: day11.Part2},
-		//		12: {1: day12.Part1, 2: day12.Part2},
+		12: {1: day12.Part1, 2: day12.Part2},
 		//		13: {1: day13.Part1, 2: day13.Part2},
 		//		14: {1: day14.Part1, 2: day14.Part2},
 		//		15: {1: day15.Part1, 2: day15.Part2},