Day01

Day01/original.go

@@ -0,0 +1,58 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"log"
+	"sort"
+)
+
+func original() {
+	content, err := ioutil.ReadFile("./input.json")
+	if err != nil {
+		log.Fatal("Error when opening input.json: ", err)
+	}
+
+	var payload map[string][]int
+	err = json.Unmarshal(content, &payload)
+	if err != nil {
+		log.Fatal("Error when unmarshalling input.json: ", err)
+	}
+
+	// Part 1
+	listA := payload["list_a"]
+	listB := payload["list_b"]
+
+	sort.Ints(listA)
+	sort.Ints(listB)
+
+	sumPart1 := 0
+	for i := 0; i < len(listA); i++ {
+		if listA[i] > listB[i] {
+			sumPart1 += listA[i] - listB[i]
+		} else {
+			sumPart1 += listB[i] - listA[i]
+		}
+	}
+
+	fmt.Println("Sum of Part 1: ", sumPart1)
+
+	// Part 2
+	listA = payload["list_a"]
+	listB = payload["list_b"]
+
+	sumPart2 := 0
+
+	for _, v1 := range listA {
+		counter := 0
+		for _, v2 := range listB {
+			if v1 == v2 {
+				counter++
+			}
+		}
+		sumPart2 += counter * v1
+	}
+
+	fmt.Println("Sum of Part 2: ", sumPart2)
+}