updated Day01 to use original input provided by adventofcode

Day01/original.go

@@ -1,31 +1,41 @@
 package main
 
 import (
-	"encoding/json"
+	"bufio"
 	"fmt"
-	"io/ioutil"
 	"log"
+	"os"
 	"sort"
+	"strconv"
+	"strings"
 )
 
 func original() {
 	fmt.Println("Original Code")
 
-	content, err := ioutil.ReadFile("./input.json")
+	file, err := os.Open("./input.txt")
 	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)
+	fileScanner := bufio.NewScanner(file)
+	fileScanner.Split(bufio.ScanLines)
+
+	var (
+		listA, listB []int
+	)
+
+	for fileScanner.Scan() {
+		slice := strings.Fields(fileScanner.Text())
+		num1, _ := strconv.Atoi(slice[0])
+		num2, _ := strconv.Atoi(slice[1])
+		listA = append(listA, num1)
+		listB = append(listB, num2)
 	}
 
-	// Part 1
-	listA := payload["list_a"]
-	listB := payload["list_b"]
+	file.Close()
 
+	// Part 1
 	sort.Ints(listA)
 	sort.Ints(listB)
 
@@ -41,9 +51,6 @@ func original() {
 	fmt.Println("Sum of Part 1: ", sumPart1)
 
 	// Part 2
-	listA = payload["list_a"]
-	listB = payload["list_b"]
-
 	sumPart2 := 0
 
 	for _, v1 := range listA {