day 5a complete

day5/day 5a/go.mod

@@ -0,0 +1,3 @@
+module PWD
+
+go 1.17

day5/day 5a/main.go

@@ -0,0 +1,77 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"math"
+	"os"
+	"regexp"
+	"strconv"
+)
+
+func main() {
+	content := returnContent("../input")
+	//content := returnContent("testInput")
+
+	gameMap := [1000][1000]int{}
+
+	fmt.Println(run(content, &gameMap))
+}
+
+func run(content *[][]int, gameMap *[1000][1000]int) int {
+	for i := 0; i < len((*content)); i++ {
+		fillMap(gameMap, (*content)[i][0], (*content)[i][1], (*content)[i][2], (*content)[i][3])
+	}
+
+	count := 0
+
+	for i := 0; i < len(gameMap); i++ {
+		for j := 0; j < len(gameMap[i]); j++ {
+			if gameMap[i][j] > 1 {
+				count++
+			}
+		}
+	}
+	return count
+}
+
+func fillMap(gameMap *[1000][1000]int, x1 int, y1 int, x2 int, y2 int) {
+
+	if x1 == x2 {
+		for i := int(math.Min(float64(y1), float64(y2))); i <= int(math.Max(float64(y1), float64(y2))); i++ {
+			(*gameMap)[i][x1]++
+		}
+	} else if y1 == y2 {
+		//fill horizontal line
+		for i := int(math.Min(float64(x1), float64(x2))); i <= int(math.Max(float64(x1), float64(x2))); i++ {
+			(*gameMap)[y1][i]++
+		}
+	}
+}
+
+func returnContent(path string) *[][]int {
+	//read file and return it as an array of integers
+
+	file, err := os.Open(path)
+	var content [][]int
+
+	if err != nil {
+		fmt.Println("Unlucky, the file didn't open")
+		return &content
+	}
+	defer file.Close()
+
+	scanner := bufio.NewScanner(file)
+	regex := regexp.MustCompile("([0-9]+)")
+	for scanner.Scan() {
+		stringValues := regex.FindAllString(scanner.Text(), 4)
+		intValues := []int{}
+		for _, v := range stringValues {
+			num, _ := strconv.Atoi(v)
+			intValues = append(intValues, num)
+		}
+		content = append(content, intValues)
+	}
+
+	return &content
+}

day5/day 5a/testInput

@@ -0,0 +1,10 @@
+0,9 -> 5,9
+8,0 -> 0,8
+9,4 -> 3,4
+2,2 -> 2,1
+7,0 -> 7,4
+6,4 -> 2,0
+0,9 -> 2,9
+3,4 -> 1,4
+0,0 -> 8,8
+5,5 -> 8,2