Day 10 part 1

main.go

@@ -7,6 +7,8 @@ import (
 )
 
 func main() {
+	fmt.Printf("===Problem===\t==solution==\t   ===time===\n")
+
 	runAndBenchmark("01", "1", false, solutions.Day01Part01)
 	runAndBenchmark("01", "2", false, solutions.Day01Part02)
 
@@ -33,6 +35,9 @@ func main() {
 
 	runAndBenchmark("09", "1", false, solutions.Day09Part01)
 	runAndBenchmark("09", "2", false, solutions.Day09Part02)
+
+	runAndBenchmark("10", "1", false, solutions.Day10Part01)
+	runAndBenchmark("10", "2", false, solutions.Day10Part02)
 }
 
 type execute func(bool) int

solutions/day10.go

@@ -0,0 +1,43 @@
+package solutions
+
+import (
+	"fmt"
+	"os"
+	"slices"
+)
+
+func Day10Part01(isTest bool) int {
+	numbers := ReadAndMapInt("10", isTest)
+	slices.Sort(numbers)
+
+	// The highest jolt value
+	highestValue := numbers[len(numbers)-1]
+	// Add the built-in adapter jolt value
+	numbers = append(numbers, highestValue+3)
+
+	jolt1Difference := 0
+	jolt3Difference := 0
+	currentJoltValue := 0
+
+	for _, value := range numbers {
+		difference := value - currentJoltValue
+		switch difference {
+		case 1:
+			jolt1Difference += 1
+		case 2:
+			continue
+		case 3:
+			jolt3Difference += 1
+		default:
+			fmt.Printf("Found an invalid jolt difference: %d %d %d \n", currentJoltValue, value, difference)
+			os.Exit(-1)
+		}
+		currentJoltValue = value
+	}
+
+	return jolt1Difference * jolt3Difference
+}
+
+func Day10Part02(isTest bool) int {
+	return -1
+}

solutions/utils.go

@@ -1,11 +1,14 @@
 package solutions
 
 import (
+	"bufio"
 	"fmt"
+	"log"
 	"os"
+	"strconv"
 )
 
-const DIR = "/home/fernando/GolandProjects/advent-20/"
+const DIR = "./"
 
 func ReadInput(day string, isTest bool) string {
 	testStr := ""
@@ -21,3 +24,37 @@ func ReadInput(day string, isTest bool) string {
 
 	return string(bytes)
 }
+
+func ReadAndMapInt(day string, isTest bool) []int {
+	testStr := ""
+	if isTest {
+		testStr = "_test"
+	}
+
+	filePath := DIR + "inputs" + testStr + "/" + day + ".txt"
+
+	file, err := os.Open(filePath)
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer file.Close()
+
+	numbers := make([]int, 0)
+
+	scanner := bufio.NewScanner(file)
+
+	for scanner.Scan() {
+		valueStr := scanner.Text()
+		number, err := strconv.Atoi(valueStr)
+		if err != nil {
+			log.Fatal(err)
+		}
+		numbers = append(numbers, number)
+	}
+
+	if err := scanner.Err(); err != nil {
+		log.Fatal(err)
+	}
+
+	return numbers
+}