[ADD] main: Added day 11 solution

11/input.txt

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+112 1110 163902 0 7656027 83039 9 74

11/main.go

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+package main
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+	"slices"
+	"strconv"
+	"strings"
+	"time"
+)
+
+const FILE_PATH = "./input.txt"
+
+//const FILE_PATH = "./sample.txt"
+
+func LoadInput(filename string) ([]string, error) {
+	file, err := os.Open(filename)
+	if err != nil {
+		return nil, err
+	}
+	defer file.Close()
+
+	var lines []string
+	scanner := bufio.NewScanner(file)
+	for scanner.Scan() {
+		lines = append(lines, scanner.Text())
+	}
+
+	if err := scanner.Err(); err != nil {
+		return nil, err
+	}
+
+	return lines, nil
+}
+
+type structuredInput = []int
+
+type Stone struct {
+	number int
+	count  int
+}
+
+func TransformInput(lines []string) structuredInput {
+	var result = make([]int, 0)
+	var numbs = strings.Split(lines[0], " ")
+	var temp int
+
+	for _, numb := range numbs {
+		temp, _ = strconv.Atoi(numb)
+		result = append(result, temp)
+	}
+
+	return result
+}
+
+func CreateStones(input []int) []Stone {
+	var result = make([]Stone, 0)
+	var temp Stone
+
+	for _, numb := range input {
+		temp = Stone{numb, 1}
+		result = append(result, temp)
+	}
+
+	return result
+}
+
+func CombineStones(stones []Stone) []Stone {
+	for i := 0; i < len(stones)-1; i++ {
+		for j := len(stones) - 1; j > i; j-- {
+			if stones[i].number == stones[j].number {
+				stones[i].count += stones[j].count
+				stones = slices.Delete(stones, j, j+1)
+			}
+		}
+	}
+	return stones
+}
+
+func GenerateNextStep(stones []Stone) []Stone {
+	var result = make([]Stone, 0)
+	var temp string
+	var numb int
+	for _, stone := range stones {
+		if stone.number == 0 {
+			result = append(result, Stone{1, stone.count})
+			continue
+		}
+		temp = strconv.Itoa(stone.number)
+		if len(temp)%2 == 0 {
+			numb, _ = strconv.Atoi(temp[:len(temp)/2])
+			result = append(result, Stone{numb, stone.count})
+			numb, _ = strconv.Atoi(temp[len(temp)/2:])
+			result = append(result, Stone{numb, stone.count})
+			continue
+		}
+
+		result = append(result, Stone{stone.number * 2024, stone.count})
+	}
+
+	return result
+}
+
+func Part1(input structuredInput) int {
+	var result = 0
+
+	var stones = CreateStones(input)
+
+	for i := 0; i < 25; i++ {
+		stones = GenerateNextStep(stones)
+		stones = CombineStones(stones)
+	}
+	for i := 0; i < len(stones); i++ {
+		result += stones[i].count
+	}
+
+	return result
+}
+
+func Part2(input structuredInput) int {
+	var result = 0
+
+	var stones = CreateStones(input)
+
+	for i := 0; i < 75; i++ {
+		stones = GenerateNextStep(stones)
+		stones = CombineStones(stones)
+	}
+	for i := 0; i < len(stones); i++ {
+		result += stones[i].count
+	}
+
+	return result
+}
+
+func main() {
+	var start time.Time
+	var elapsed time.Duration = 0
+	input, err := LoadInput(FILE_PATH)
+	if err != nil {
+		fmt.Println("Error loading input:", err)
+		return
+	}
+
+	structuredInput := TransformInput(input)
+	fmt.Println("Structured Input:", structuredInput)
+
+	start = time.Now()
+	fmt.Println("Solution Part 1: ", Part1(structuredInput))
+	elapsed = time.Since(start)
+	fmt.Printf("Part 1 took %s\n", elapsed)
+
+	start = time.Now()
+	fmt.Println("Solution Part 2: ", Part2(structuredInput))
+	elapsed = time.Since(start)
+	fmt.Printf("Part 2 took %s\n", elapsed)
+}

11/sample.txt

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+125 17