First day

cmd/O1/main.go

@@ -2,15 +2,30 @@ package main
 
 import (
 	"fmt"
-	"log"
-	"os"
+
+	utils "git.anthonygueguen.fr/g3po/aoc2023/internal"
+	day01 "git.anthonygueguen.fr/g3po/aoc2023/internal/01"
 )
 
 func main() {
-	fmt.Println("Opening file...")
-	file, err := os.OpenFile("./input.txt", os.O_RDONLY, 0644)
-	if err != nil {
-		log.Fatal(err)
+	content := utils.Init()
+
+	fmt.Println("Part 1")
+	digits := day01.GetDigits(content)
+	sum := 0
+	for _, v := range digits {
+		sum += v
 	}
-	defer file.Close()
+
+	fmt.Printf("Result: %d\n", sum)
+	fmt.Println("Part 2")
+
+	content = day01.WordToNum(content)
+	digits = day01.GetDigits(content)
+
+	sum = 0
+	for _, v := range digits {
+		sum += v
+	}
+	fmt.Printf("Result: %d", sum)
 }

go.mod

@@ -1,3 +1,3 @@
-module 01
+module git.anthonygueguen.fr/g3po/aoc2023
 
 go 1.21.4

internal/01/01.go

@@ -0,0 +1,56 @@
+package day01
+
+import (
+	"strconv"
+	"strings"
+	"unicode"
+
+	utils "git.anthonygueguen.fr/g3po/aoc2023/internal"
+)
+
+var wordNum = map[string]string{
+	"one":   "o1e",
+	"two":   "t2o",
+	"three": "t3e",
+	"four":  "f4r",
+	"five":  "f5e",
+	"six":   "s6x",
+	"seven": "s7n",
+	"eight": "e8t",
+	"nine":  "n9e",
+}
+
+func GetDigits(content []string) []int {
+	var digits []int
+	for _, line := range content {
+		d_str := ""
+		for _, c := range line {
+			if unicode.IsDigit(c) {
+				d_str = d_str + string(c)
+				break
+			}
+		}
+		for i := len(line) - 1; i >= 0; i-- {
+			if unicode.IsDigit(rune(line[i])) {
+				d_str = d_str + string(line[i])
+				break
+			}
+		}
+		utils.Must[int](strconv.Atoi(d_str))
+		digits = append(digits, utils.Must[int](strconv.Atoi(d_str)))
+	}
+
+	return digits
+}
+
+func WordToNum(content []string) []string {
+	var rContent []string
+	for _, line := range content {
+		str := line
+		for k, v := range wordNum {
+			str = strings.ReplaceAll(str, k, v)
+		}
+		rContent = append(rContent, str)
+	}
+	return rContent
+}

internal/utils.go

@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"log"
 	"os"
+	"strings"
 )
 
 func Must[T any](obj T, err error) T {
@@ -13,7 +14,9 @@ func Must[T any](obj T, err error) T {
 	return obj
 }
 
-func Init() []byte {
+func Init() []string {
 	fmt.Println("Opening file...")
-	return Must(os.ReadFile("./input.txt"))
+	bytes := Must(os.ReadFile("./input.txt"))
+	content := strings.Split(string(bytes), "\n")
+	return content[:len(content)-1]
 }