day12

day12/day.go

@@ -0,0 +1,62 @@
+package day12
+
+import (
+	"encoding/json"
+	"fmt"
+	"tools"
+)
+
+func getNumberSum(input interface{}, ignoreRed bool) (sum float64) {
+	switch input.(type) {
+	case float64:
+		sum += input.(float64)
+	case string:
+	case []interface{}:
+		for _, v := range input.([]interface{}) {
+			sum += getNumberSum(v, ignoreRed)
+		}
+	case map[string]interface{}:
+		for k, v := range input.(map[string]interface{}) {
+			if k == "red" || v == "red" {
+				return 0
+			}
+			sum += getNumberSum(v, ignoreRed)
+		}
+	default:
+		fmt.Printf("Don't know how to handle type %T\n", input)
+	}
+
+	return sum
+}
+
+func Part1(puzzle tools.AoCPuzzle) interface{} {
+	jsonInput := []byte(puzzle.GetInputArray()[0])
+	var jsonData map[string]interface{}
+	sum := 0.0
+	err := json.Unmarshal(jsonInput, &jsonData)
+	if err != nil {
+		fmt.Println(err)
+	} else {
+		for _, v := range jsonData {
+			sum += getNumberSum(v, false)
+		}
+	}
+
+	return sum
+}
+
+func Part2(puzzle tools.AoCPuzzle) interface{} {
+	jsonInput := []byte(puzzle.GetInputArray()[0])
+	var jsonData map[string]interface{}
+	sum := 0.0
+	err := json.Unmarshal(jsonInput, &jsonData)
+	if err != nil {
+		fmt.Println(err)
+	} else {
+		for _, v := range jsonData {
+			sum += getNumberSum(v, true)
+		}
+	}
+
+	return sum
+}

inputs/12_test

@@ -0,0 +1 @@
+{"dummy": [-1,{"a":-1}]}

main.go

@@ -12,6 +12,7 @@ import (
 	"aoc2015/day09"
 	"aoc2015/day10"
 	"aoc2015/day11"
+	"aoc2015/day12"
 	"flag"
 	"fmt"
 	"os"
@@ -40,6 +41,7 @@ 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},
 	}
 }