day 13b complete

took a while, output was a bit... broken :(
This commit is contained in:
Luke Else 2021-12-14 22:37:28 +00:00
parent 7a47ce953c
commit 27f270dd4a
2 changed files with 84 additions and 9 deletions

View File

@ -5,19 +5,100 @@ import (
"fmt"
"os"
"strconv"
"strings"
)
func main() {
content := returnContent("../input")
//content := returnContent("testInput")
sheet := make(map[Coordinate]bool)
//var answer string
for y := 0; y < 1000; y++ {
for x := 0; x < 1000; x++ {
sheet[Coordinate{X: x, Y: y}] = false
}
}
for _, line := range *content {
if strings.HasPrefix(line, "fold") {
//Fold instructions
instruction := strings.Split(line, "=")
if strings.Contains(instruction[0], "x") {
foldPoint, _ := strconv.Atoi(instruction[1])
sheet = FoldX(sheet, foldPoint)
}
if strings.Contains(instruction[0], "y") {
foldPoint, _ := strconv.Atoi(instruction[1])
sheet = FoldY(sheet, foldPoint)
}
} else if line != "" {
//mapping instructions
coordinates := strings.Split(line, ",")
x, _ := strconv.Atoi(coordinates[0])
y, _ := strconv.Atoi(coordinates[1])
sheet[Coordinate{X: x, Y: y}] = true
}
}
for y := 0; y < 8; y++ {
for x := 0; x < 200; x++ {
if sheet[Coordinate{X: x, Y: y}] {
fmt.Print("#")
} else {
fmt.Print(" ")
}
}
fmt.Print("\n")
}
}
func returnContent(path string) *[][]int {
func FoldX(sheet map[Coordinate]bool, foldPoint int) (folded map[Coordinate]bool) {
folded = make(map[Coordinate]bool)
for mark := range sheet {
x := mark.X
if x > foldPoint {
//If the value is in the region that gets folded
x = 2*foldPoint - x
}
folded[Coordinate{X: x, Y: mark.Y}] = true
}
return
}
func FoldY(sheet map[Coordinate]bool, foldPoint int) (folded map[Coordinate]bool) {
folded = make(map[Coordinate]bool)
for mark := range sheet {
y := mark.X
if y > foldPoint {
//If the value is in the region that gets folded
y = 2*foldPoint - y
}
folded[Coordinate{X: mark.X, Y: y}] = true
}
return
}
type Coordinate struct {
X int
Y int
}
func returnContent(path string) *[]string {
//read file and return it as an array of integers
file, err := os.Open(path)
var content [][]int
var content []string
if err != nil {
fmt.Println("Unlucky, the file didn't open")
@ -28,12 +109,7 @@ func returnContent(path string) *[][]int {
scanner := bufio.NewScanner(file)
for scanner.Scan() {
nums := []int{}
for _, char := range scanner.Text() {
num, _ := strconv.Atoi(string(char))
nums = append(nums, num)
}
content = append(content, nums)
content = append(content, scanner.Text())
}
return &content

View File

@ -926,7 +926,6 @@
723,325
833,773
211,415
fold along x=655
fold along y=447
fold along x=327