2023 day 10
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2023/10/go.mod
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2023/10/go.mod
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module git.tristans.cloud/tristan/aoc/2023/10
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go 1.21.4
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2023/10/input.txt
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2023/10/input.txt
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|
||||
.L|-L-F|7.||J|L7|LJFJL7LJL7F7FJ|||F7||F-7F-7F7|.||FJFJ|L-7||LJ|L7FJ|FJ|FJF-7L77||LJ|L-7-LJL7L7L||F-JL7F7.F|7.LJ.|L7JLFF----|.L77.7.F|J-L-J77
|
||||
FF--J.|F777F.FJLJF|L7FJF--J||L7LJ||LJLJLLJ-|||L7||L7|L|F-J|L7FJFJ|FJL7||FJ7L-J7LJ|-L-L7-LLJL7|-LJL7F7LJL--7-F-JFL-J||LL.|77L-L|J.F7-7..L7L77
|
||||
L|F7JFLJLJ|7-J-7L77-||LL-7FJL7L7-|L7JJ.F---J||FJ||J||F|L-7|FJL-JFJ|F7LJ|L---------77L777.|.LLJ|L|-LJL7F7F-J-J7-L7LJFF-LJ-J-JJ.FF.|77LF7FL-|.
|
||||
FF7F7F7L7LL77J7|7.L-LJ.F-J|.L|FJ-L-JJ7FL-7F7|||FJ|FJ|FJF-J|L7J.LL7||L--JF7F7F7F---JJ-LLJJ7F-J.|.77|F7||||||7|---JF7-J7-|L|J.|LJ.7|.L.FF...|7
|
||||
L-JJFL-.L-7LJ7L-77J.|.FL-7|-FLJ.L..|777.L||||LJ|FJ|FJ|FJ-LL-J|7LLLJL-7F7|||||LJJLJ.|FF7|7F|JL||.|FFJLJ|LJFF||-FFL7LJJJL|J.|.7.-J-77|.|LL.7-7
|
||||
LJJF|-LL7LJ-JJ7||J.FF|7F|LJ-J|LJJF--7||-LLJ||.FJL7LJLLJ.|L|FLJ77|7||.LJ||||||||.L.7.LJL7FL.|.J77LFJF-7|JFFJL77-|7.F7L7.LJ.|-7-7.F.LF-J7J.||.
|
||||
L7.L|7|LFJ..LF-|7J77FJL-7|J7L|F|.|JJL||FL|.LJFL7FJJ||7-|7.L-7|FF.J-F|-FJ|||LJ-J7..J7L|.J777F.FF-.L-J|LJLLL|.|---7FJ--J.L|.J7|--7L7J|7F||F-L-
|
||||
7.L|L--.|LFJF|F|JJ|FJLJ.LL7F.-LJ--J.LL7JFLF7|J-||J.7L-7||F-JF-7.F7.JJLL7|||JJ-|J.FLF7J.L7-LF--J|FL..F|77.|.FJL7FF|JF-|7F|-|7|.L7J.F|-|LF|...
|
||||
F-|||.J-F-F--.|JL|L|FJJ7|.|.J.L7.FJ-7||JF|J-LLFLJ|.|.LLL77.F7F|7LLFJ--LLJLJ7|FL.7J|.|-7.L7FJFFLL7LF|-7L--.-|.L-L--7-L7--J7L-JF-L--J|L7L-|-|7
|
||||
J-JJ77.FLJ.77|LF7|.|J7.L7.|7L7.F.FL7FFLFJ7LF7.FJL-.|J-J-L-FJ|LLJ||J.7||L|JJ.FJJFJ7L7||.-J|7-FJJL|FL.LJL|-L-|F|J|J.L7FJ.|7F-.|F7L|.JJ.J7J.LL7
|
||||
|.L|L-JJ-F|.|.|LFJ-J-F-JFFL7|.-|F-7F-F-7-JF-|7JLFJ7LJJ..J.|JJ||.LJFJL-JJJFLF7J.FLF.7-J-J.L|F7|.-.F|J7LF|.|||FF-|7||LL-7|LJJ.F|JF-7|-L-J.|.L-
|
||||
FL7F-|7J.|J-|LJ-J.LL7||-7J|F-|JF-|-F7|LJ.|L7L|7J|.FFJF-|-|||---JJ.7.L-L|.L--F-7FFJF|-|||7FFJLJ-|F.||7-|.F|F|J|.J7FL-.-J7L|.|7|F7-77|LJ.LF.L|
|
||||
-.LJ-L|--JL-FJJ.LFJL-J--JJFL-JL|LJ.L--J.F--JLL|.--JJ.7JLLFLJ...|-F.-.FJJFJJJL-L-J-L77LLL--J|..LLF.F-7.L-J.JJJL7LLLJ.JJJF-J7---LJ-L|7LL|-J7-|
|
||||
16
2023/10/part1/cmd/main.go
Normal file
16
2023/10/part1/cmd/main.go
Normal file
|
|
@ -0,0 +1,16 @@
|
|||
|
||||
package main
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"os"
|
||||
"git.tristans.cloud/tristan/aoc/2023/10/part1/lib"
|
||||
)
|
||||
|
||||
func main() {
|
||||
scanner := bufio.NewScanner(os.Stdin);
|
||||
pipeMap := part1.ReadMap(scanner)
|
||||
size := part1.LoopSize(pipeMap)
|
||||
println(size / 2)
|
||||
}
|
||||
|
||||
89
2023/10/part1/lib/lib.go
Normal file
89
2023/10/part1/lib/lib.go
Normal file
|
|
@ -0,0 +1,89 @@
|
|||
|
||||
package part1
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"strings"
|
||||
)
|
||||
|
||||
var Tiles = map[byte][2][2]int{
|
||||
'|': {{0,-1}, {0,1}},
|
||||
'-': {{-1,0}, {1,0}},
|
||||
'L': {{0,-1}, {1,0}},
|
||||
'J': {{0,-1}, {-1,0}},
|
||||
'7': {{0,1}, {-1,0}},
|
||||
'F': {{0,1}, {1,0}},
|
||||
}
|
||||
|
||||
func ReadMap(scanner *bufio.Scanner) (res []string) {
|
||||
for scanner.Scan() {
|
||||
res = append(res, scanner.Text())
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func FindStart(pipeMap []string) (x,y int) {
|
||||
for y = range pipeMap {
|
||||
if x = strings.IndexRune(pipeMap[y], 'S'); x > -1 {
|
||||
return
|
||||
}
|
||||
}
|
||||
return -1, -1
|
||||
}
|
||||
|
||||
func FindFirst(pipeMap []string, sx,sy int) (int, int, int) {
|
||||
for y := sy-1; y <= sy+1;y++ {
|
||||
if y < 0 || y >= len(pipeMap) {
|
||||
continue
|
||||
}
|
||||
for x := sx-1; x <= sx+1 ;x++ {
|
||||
if x < 0 || x >= len(pipeMap[y]) {
|
||||
continue
|
||||
}
|
||||
side, ok := GetSide(pipeMap, sx,sy, x,y)
|
||||
if ok {
|
||||
return side,x,y
|
||||
}
|
||||
}
|
||||
}
|
||||
return -1, -1, -1
|
||||
}
|
||||
|
||||
func GetSide(pipeMap []string, px,py, x,y int) ( int, bool ) {
|
||||
tile := pipeMap[y][x]
|
||||
dirs, ok := Tiles[tile]
|
||||
if !ok {
|
||||
return -1, false
|
||||
}
|
||||
for i,dir := range dirs {
|
||||
if x + dir[0] == px && y + dir[1] == py {
|
||||
return i, true
|
||||
}
|
||||
}
|
||||
return -1, false
|
||||
}
|
||||
|
||||
|
||||
func FindNext(pipeMap []string, side, x,y int) (int,int,int) {
|
||||
tile := pipeMap[y][x]
|
||||
|
||||
dir := Tiles[tile][1-side]
|
||||
|
||||
nx,ny := x+dir[0], y+dir[1]
|
||||
|
||||
nside, _ := GetSide(pipeMap, x,y, nx,ny)
|
||||
return nside,nx,ny
|
||||
}
|
||||
|
||||
func LoopSize(pipeMap []string) int {
|
||||
x,y := FindStart(pipeMap)
|
||||
side,x,y := FindFirst(pipeMap, x,y)
|
||||
count := 1
|
||||
for pipeMap[y][x] != 'S' {
|
||||
count++
|
||||
side,x,y = FindNext(pipeMap, side, x,y)
|
||||
}
|
||||
return count
|
||||
|
||||
}
|
||||
|
||||
131
2023/10/part1/lib/lib_test.go
Normal file
131
2023/10/part1/lib/lib_test.go
Normal file
|
|
@ -0,0 +1,131 @@
|
|||
|
||||
package part1
|
||||
|
||||
import (
|
||||
"testing"
|
||||
"reflect"
|
||||
"bufio"
|
||||
"strings"
|
||||
)
|
||||
|
||||
const basicInput =
|
||||
".....\n" +
|
||||
".S-7.\n" +
|
||||
".|.|.\n" +
|
||||
".L-J.\n" +
|
||||
".....\n"
|
||||
|
||||
var basicMap = []string{
|
||||
".....",
|
||||
".S-7.",
|
||||
".|.|.",
|
||||
".L-J.",
|
||||
".....",
|
||||
}
|
||||
|
||||
const complexInput =
|
||||
"7-F7-\n" +
|
||||
".FJ|7\n" +
|
||||
"SJLL7\n" +
|
||||
"|F--J\n" +
|
||||
"LJ.LJ\n"
|
||||
|
||||
var complexMap = []string{
|
||||
"7-F7-",
|
||||
".FJ|7",
|
||||
"SJLL7",
|
||||
"|F--J",
|
||||
"LJ.LJ",
|
||||
}
|
||||
|
||||
func TestReadMap(t *testing.T) {
|
||||
reader := bufio.NewScanner(strings.NewReader(basicInput));
|
||||
pipes := ReadMap(reader)
|
||||
equal(t, pipes, basicMap)
|
||||
}
|
||||
|
||||
func TestReadMapComplex(t *testing.T) {
|
||||
reader := bufio.NewScanner(strings.NewReader(complexInput));
|
||||
pipes := ReadMap(reader)
|
||||
equal(t, pipes, complexMap)
|
||||
}
|
||||
|
||||
func TestFindStart(t *testing.T) {
|
||||
x,y := FindStart(basicMap)
|
||||
equal(t, x, 1)
|
||||
equal(t, y, 1)
|
||||
}
|
||||
|
||||
func TestFindStartComplex(t *testing.T) {
|
||||
x,y := FindStart(complexMap)
|
||||
equal(t, x, 0)
|
||||
equal(t, y, 2)
|
||||
}
|
||||
|
||||
func TestFindFirstBasic(t *testing.T) {
|
||||
x,y := 1,1
|
||||
side,newX,newY := FindFirst(basicMap, x,y)
|
||||
equal(t, side, 0)
|
||||
equal(t, newX, 2)
|
||||
equal(t, newY, 1)
|
||||
}
|
||||
|
||||
func TestFindFirstComplex(t *testing.T) {
|
||||
x,y := 0, 2
|
||||
side,newX,newY := FindFirst(complexMap, x,y)
|
||||
equal(t, side, 1)
|
||||
equal(t, newX, 1)
|
||||
equal(t, newY, 2)
|
||||
}
|
||||
|
||||
func TestGetSide(t *testing.T) {
|
||||
side,ok := GetSide(basicMap, 1,1, 2,1)
|
||||
equal(t, side, 0)
|
||||
equal(t, ok, true)
|
||||
}
|
||||
|
||||
func TestFindNext(t *testing.T) {
|
||||
cx,cy := 2,1
|
||||
|
||||
s,nx,ny := FindNext(basicMap, 0, cx,cy)
|
||||
equal(t, nx, 3)
|
||||
equal(t, ny, 1)
|
||||
|
||||
s,nx,ny = FindNext(basicMap, s, nx,ny)
|
||||
equal(t, nx, 3)
|
||||
equal(t, ny, 2)
|
||||
|
||||
s,nx,ny = FindNext(basicMap, s, nx,ny)
|
||||
equal(t, nx, 3)
|
||||
equal(t, ny, 3)
|
||||
|
||||
s,nx,ny = FindNext(basicMap, s, nx,ny)
|
||||
equal(t, nx, 2)
|
||||
equal(t, ny, 3)
|
||||
|
||||
s,nx,ny = FindNext(basicMap, s, nx,ny)
|
||||
equal(t, nx, 1)
|
||||
equal(t, ny, 3)
|
||||
|
||||
s,nx,ny = FindNext(basicMap, s, nx,ny)
|
||||
equal(t, nx, 1)
|
||||
equal(t, ny, 2)
|
||||
|
||||
s,nx,ny = FindNext(basicMap, s, nx,ny)
|
||||
equal(t, nx, 1)
|
||||
equal(t, ny, 1)
|
||||
}
|
||||
|
||||
func TestLoopSize(t *testing.T) {
|
||||
size := LoopSize(basicMap)
|
||||
equal(t, size, 8)
|
||||
size = LoopSize(complexMap)
|
||||
equal(t, size, 16)
|
||||
}
|
||||
|
||||
func equal(t *testing.T, actual any, target any) {
|
||||
if !reflect.DeepEqual(actual, target) {
|
||||
t.Errorf("expected %v, got %v", target, actual)
|
||||
}
|
||||
}
|
||||
|
||||
18
2023/10/part2/cmd/main.go
Normal file
18
2023/10/part2/cmd/main.go
Normal file
|
|
@ -0,0 +1,18 @@
|
|||
|
||||
package main
|
||||
|
||||
import (
|
||||
"git.tristans.cloud/tristan/aoc/2023/10/part1/lib"
|
||||
"git.tristans.cloud/tristan/aoc/2023/10/part2/lib"
|
||||
"bufio"
|
||||
"os"
|
||||
)
|
||||
|
||||
func main () {
|
||||
scanner := bufio.NewScanner(os.Stdin);
|
||||
|
||||
pipeMap := part1.ReadMap(scanner)
|
||||
inside := part2.GetVolume(pipeMap)
|
||||
println(inside)
|
||||
}
|
||||
|
||||
84
2023/10/part2/lib/lib.go
Normal file
84
2023/10/part2/lib/lib.go
Normal file
|
|
@ -0,0 +1,84 @@
|
|||
|
||||
package part2
|
||||
|
||||
import (
|
||||
"git.tristans.cloud/tristan/aoc/2023/10/part1/lib"
|
||||
"fmt"
|
||||
)
|
||||
|
||||
type Loop map[[2]int]bool
|
||||
|
||||
func GetLoop(pipeMap []string) ( loop Loop ) {
|
||||
x,y := part1.FindStart(pipeMap)
|
||||
loop = Loop{{x,y}: true}
|
||||
side,x,y := part1.FindFirst(pipeMap, x,y)
|
||||
for pipeMap[y][x] != 'S' {
|
||||
loop[[2]int{x,y}] = true
|
||||
side,x,y = part1.FindNext(pipeMap, side, x,y)
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
func GetShapeOfS(pipeMap []string) () {
|
||||
return
|
||||
}
|
||||
|
||||
const CLEAR = "\u001b[0;0m";
|
||||
const OUT_OF_LOOP = CLEAR;
|
||||
const ON_LOOP = "\u001b[0;31m";
|
||||
const IN_LOOP = "\u001b[0;33m";
|
||||
|
||||
func GetVolume(pipeMap []string) int {
|
||||
loop := GetLoop(pipeMap)
|
||||
count := 0
|
||||
for y,line := range pipeMap {
|
||||
inLoop := false
|
||||
onDownEdge := false
|
||||
onUpEdge := false
|
||||
for x,c := range line {
|
||||
_,onLoop := loop[[2]int{x,y}]
|
||||
|
||||
if onLoop {
|
||||
switch c {
|
||||
case '|':
|
||||
inLoop = !inLoop
|
||||
case 'L':
|
||||
onDownEdge = true
|
||||
case 'F':
|
||||
onUpEdge = true
|
||||
case '7':
|
||||
if onDownEdge {
|
||||
onDownEdge = false
|
||||
inLoop = !inLoop
|
||||
} else if onUpEdge {
|
||||
onUpEdge = false
|
||||
}
|
||||
case 'J':
|
||||
if onUpEdge {
|
||||
onUpEdge = false
|
||||
inLoop = !inLoop
|
||||
} else if onDownEdge {
|
||||
onDownEdge = false
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
}
|
||||
color := OUT_OF_LOOP
|
||||
if onLoop {
|
||||
color = ON_LOOP
|
||||
}
|
||||
if inLoop && !onLoop {
|
||||
count++
|
||||
color = IN_LOOP
|
||||
}
|
||||
if c == 'S' {
|
||||
color = "\u001b[41;30m"
|
||||
}
|
||||
fmt.Printf("%v%c", color, c)
|
||||
}
|
||||
println(CLEAR)
|
||||
}
|
||||
return count
|
||||
}
|
||||
|
||||
88
2023/10/part2/lib/lib_test.go
Normal file
88
2023/10/part2/lib/lib_test.go
Normal file
|
|
@ -0,0 +1,88 @@
|
|||
|
||||
package part2
|
||||
|
||||
import (
|
||||
"testing"
|
||||
"reflect"
|
||||
)
|
||||
|
||||
var inputMap = []string{
|
||||
"...........",
|
||||
".S-------7.",
|
||||
".|F-----7|.",
|
||||
".||.....||.",
|
||||
".||.....||.",
|
||||
".|L-7.F-J|.",
|
||||
".|..|.|..|.",
|
||||
".L--J.L--J.",
|
||||
"...........",
|
||||
}
|
||||
|
||||
var complexMap = []string{
|
||||
"FF7FSF7F7F7F7F7F---7",
|
||||
"L|LJ||||||||||||F--J",
|
||||
"FL-7LJLJ||||||LJL-77",
|
||||
"F--JF--7||LJLJ7F7FJ-",
|
||||
"L---JF-JLJ.||-FJLJJ7",
|
||||
"|F|F-JF---7F7-L7L|7|",
|
||||
"|FFJF7L7F-JF7|JL---7",
|
||||
"7-L-JL7||F7|L7F-7F7|",
|
||||
"L.L7LFJ|||||FJL7||LJ",
|
||||
"L7JLJL-JLJLJL--JLJ.L",
|
||||
}
|
||||
|
||||
var anotherMap = []string{
|
||||
".F----7F7F7F7F-7....",
|
||||
".|F--7||||||||FJ....",
|
||||
".||.FJ||||||||L7....",
|
||||
"FJL7L7LJLJ||LJ.L-7..",
|
||||
"L--J.L7...LJS7F-7L7.",
|
||||
"....F-J..F7FJ|L7L7L7",
|
||||
"....L7.F7||L7|.L7L7|",
|
||||
".....|FJLJ|FJ|F7|.LJ",
|
||||
"....FJL-7.||.||||...",
|
||||
"....L---J.LJ.LJLJ...",
|
||||
}
|
||||
|
||||
var basicMap = []string{
|
||||
".....",
|
||||
".S-7.",
|
||||
".|.|.",
|
||||
".L-J.",
|
||||
".....",
|
||||
}
|
||||
|
||||
func TestGetLoop(t *testing.T) {
|
||||
loop := GetLoop(basicMap)
|
||||
equal(t, loop, Loop{
|
||||
{1,1}:true,
|
||||
{2,1}:true,
|
||||
{3,1}:true,
|
||||
{3,2}:true,
|
||||
{3,3}:true,
|
||||
{2,3}:true,
|
||||
{1,3}:true,
|
||||
{1,2}:true,
|
||||
})
|
||||
}
|
||||
|
||||
func TestGetVolume(t *testing.T) {
|
||||
v := GetVolume(inputMap)
|
||||
equal(t, v, 4)
|
||||
}
|
||||
|
||||
func TestGetVolumeComplex(t *testing.T) {
|
||||
v := GetVolume(complexMap)
|
||||
equal(t, v, 10)
|
||||
}
|
||||
|
||||
func TestGetVolumeAgain(t *testing.T) {
|
||||
v := GetVolume(anotherMap)
|
||||
equal(t, v, 8)
|
||||
}
|
||||
|
||||
func equal(t *testing.T, actual any, target any) {
|
||||
if !reflect.DeepEqual(actual, target) {
|
||||
t.Errorf("expected %v, got %v", target, actual)
|
||||
}
|
||||
}
|
||||
Loading…
Reference in a new issue