fix missing

2024/go/day15/day15.go

@@ -0,0 +1,119 @@
+package day15
+
+import (
+	_ "adventofcode2024/utils"
+	_ "adventofcode2024/utils/grid2d"
+	_ "adventofcode2024/utils/grid2d"
+	"adventofcode2024/utils/inputs"
+	"fmt"
+	_ "regexp"
+	"strings"
+
+	_ "github.com/deckarep/golang-set/v2"
+)
+
+type Loc struct {
+	x int
+	y int
+}
+
+type Queue struct {
+	elements []Loc
+}
+
+// Push adds an element to the end of the queue
+func (q *Queue) Push(value Loc) {
+	q.elements = append(q.elements, value)
+}
+
+// Pop removes an element from the front of the queue
+func (q *Queue) Pop() (Loc, bool) {
+	if len(q.elements) == 0 {
+		return Loc{}, false // Return zero and false if the queue is empty
+	}
+	value := q.elements[0]
+	q.elements = q.elements[1:] // Remove the first element
+	return value, true
+}
+
+// IsEmpty checks if the queue is empty
+func (q *Queue) IsEmpty() bool {
+	return len(q.elements) == 0
+}
+
+func Part1(input string) int {
+	var val int
+	var rloc Loc
+	in := strings.Split(input, "\n\n")
+	dirs := map[rune][2]int{
+		'<': {-1, 0},
+		'>': {1, 0},
+		'^': {0, -1},
+		'v': {0, 1},
+	}
+	grid := inputs.ToGrid2D(in[0], "\n", "", ',', func(c string) rune { return rune(c[0]) })
+	directions := strings.ReplaceAll(in[1], "\n", "")
+	fmt.Printf("%v\n", grid.StringWithFormatter(formatter))
+	fmt.Printf("%v\n", directions)
+	found := false
+	for x := 0; x < grid.SizeX(); x++ {
+		if found {
+			break
+		}
+		for y := 0; y < grid.SizeY(); y++ {
+			if grid.Get(x, y) == '@' {
+				rloc = Loc{x: x, y: y}
+				found = true
+				break
+			}
+		}
+	}
+	fmt.Printf("Robot: %v\n", rloc)
+	for _, dir := range directions {
+		q := &Queue{}
+		x := rloc.x
+		y := rloc.y
+	Loop:
+		for {
+			x += dirs[dir][0]
+			y += dirs[dir][1]
+			switch grid.Get(x, y) {
+			case 'O':
+				q.Push(Loc{x: x, y: y})
+			case '.':
+				for !q.IsEmpty() {
+					grid.Set(x, y, 'O')
+					loc, _ := q.Pop()
+					fmt.Printf("%d,%d\n", loc.x, loc.y)
+					//					grid.Set(loc.x, loc.y, 'O')
+					x -= dirs[dir][0]
+					y -= dirs[dir][1]
+				}
+				grid.Set(rloc.x, rloc.y, '.')
+				rloc.x = x
+				rloc.y = y
+				grid.Set(rloc.x, rloc.y, '@')
+				break Loop
+			case '#':
+				break Loop
+			}
+		}
+		//		fmt.Printf("%v\n", grid.StringWithFormatter(formatter))
+	}
+	for x := 0; x < grid.SizeX(); x++ {
+		for y := 0; y < grid.SizeY(); y++ {
+			if grid.Get(x, y) == 'O' {
+				val += (100 * y) + x
+			}
+		}
+	}
+	return val
+}
+
+func Part2(input string) int {
+	return 0
+}
+
+func formatter(p rune, x int, y int) string {
+	return string(p)
+}