feat(day01): solve part01

Author: maximiliantech

2022-go/common/utils.go

@@ -6,6 +6,7 @@ import (
 	"os"
 )
 
+// ReadAllLines reads all lines from a file and returns them as a slice of strings.
 func ReadAllLines(filePath string) []string {
 	file, err := os.Open(filePath)
 

2023-go/day01/day01.go

@@ -0,0 +1,83 @@
+package main
+
+import (
+	"github.com/maximiliantech/advent-of-code/2022-go/common"
+	"log"
+	"strconv"
+)
+
+func main() {
+	lines := common.ReadAllLines("../2023-go/day01/input.txt")
+	log.Println("Day 01 Part 01")
+	partOne(lines)
+	log.Println("Day 01 Part 02")
+	partTwo(lines)
+}
+
+func partOne(lines []string) {
+	var sum int
+	for _, line := range lines {
+		value := readCalibrationValue(line)
+		sum += value
+	}
+	log.Println(sum)
+}
+
+// readCalibrationValue reads the calibration value from a line.
+func readCalibrationValue(line string) int {
+	var firstDigit int
+	var lastDigit int
+	for _, char := range line {
+		char := int(char)
+		// if char is a digit
+		if isActualDigit(char) {
+			firstDigit = char
+			break
+		}
+	}
+	for i := len(line) - 1; i >= 0; i-- {
+		char := int(line[i])
+
+		// if char is a digit
+		if isActualDigit(char) {
+			lastDigit = char
+			break
+		}
+	}
+	n, _ := strconv.Atoi(string(rune(firstDigit)) + "" + string(rune(lastDigit)))
+	return n
+}
+
+func partTwo(lines []string) {
+	var sum int
+	for _, line := range lines {
+		value := readCalibrationValue2(line)
+		sum += value
+	}
+	log.Println(sum)
+}
+
+// please create a function that solves the problem
+func readCalibrationValue2(line string) int {
+	digits := map[string]int{
+		"one":   1,
+		"two":   2,
+		"three": 3,
+		"four":  4,
+		"five":  5,
+		"six":   6,
+		"seven": 7,
+		"eight": 8,
+		"nine":  9,
+	}
+
+	// search for first occurrence of spelled out digit or actual digit
+	for i := 0; i < len(line); i++ {
+
+	}
+	return 0
+}
+
+func isActualDigit(char int) bool {
+	return char >= '1' && char <= '9'
+}