diff --git a/day23/day23.go b/day23/day23.go new file mode 100644 index 0000000..cb663cc --- /dev/null +++ b/day23/day23.go @@ -0,0 +1,160 @@ +package main + +import ( + "AOC2022/helper" + "fmt" +) + +func main() { + //args := os.Args[1:] + lines := helper.ReadTextFile("day23/input") + elves := make(map[[2]int][3]int) + for i := 0; i < len(lines); i++ { + line := lines[i] + for j := 0; j < len(line); j++ { + if lines[i][j] == '#' { + elves[[2]int{i, j}] = [3]int{0, 0, 0} + } + } + } + + noElvesMoves := false + i := 0 + for !noElvesMoves { + //Get planned move for all elves + for key, _ := range elves { + elves[key] = getPlannedMove(key, elves, i) + } + //Move elves + noElvesMoves = moveElves(&elves) + i++ + if i == 10 { + print(elves) + } + } + fmt.Println(i) + +} + +func moveElves(elves *map[[2]int][3]int) bool { + elvesWithPossiblePlanedMoves := [][2]int{} + plannedMoves := make(map[[2]int][][2]int) + for key, val := range *elves { + if val != [3]int{0, 0, 0} { + plannedMove := [2]int{key[0] + val[0], key[1] + val[1]} + plannedMoves[plannedMove] = append(plannedMoves[plannedMove], key) + } + } + for _, val := range plannedMoves { + if len(val) == 1 { + elvesWithPossiblePlanedMoves = append(elvesWithPossiblePlanedMoves, val[0]) + } + } + if len(elvesWithPossiblePlanedMoves) == 0 { + return true + } + for _, elv := range elvesWithPossiblePlanedMoves { + moveElv(elv, elves) + } + return false +} + +func moveElv(elv [2]int, elves *map[[2]int][3]int) { + plannedMove := (*elves)[elv] + newElv := [2]int{elv[0] + plannedMove[0], elv[1] + plannedMove[1]} + delete(*elves, elv) + (*elves)[newElv] = [3]int{0, 0, plannedMove[2] + 1} +} + +func getPlannedMove(point [2]int, elves map[[2]int][3]int, pastMoves int) [3]int { + plannedMove := [3]int{0, 0, 0} + neighbors := getNeighbors(point) + neigborexist := false + checkedNorth := 0 + checkedWest := 0 + checkedSouth := 0 + checkedEast := 0 + for i, neighbor := range neighbors { + _, exist := elves[neighbor] + if exist { + neigborexist = true + } else { + if i >= 0 && i <= 2 { + checkedNorth++ + } + if i >= 2 && i <= 4 { + checkedEast++ + } + if i >= 4 && i <= 6 { + checkedSouth++ + } + if i >= 6 || i == 0 { + checkedWest++ + } + } + } + + if neigborexist { + priorityList := []int{checkedNorth, checkedSouth, checkedWest, checkedEast} + directions := [][2]int{{-1, 0}, {1, 0}, {0, -1}, {0, 1}} + for i := 0; i < pastMoves; i++ { + priorityList = append(priorityList[1:], priorityList[0]) + directions = append(directions[1:], directions[0]) + } + for i, priority := range priorityList { + if priority == 3 { + direction := directions[i] + plannedMove = [3]int{direction[0], direction[1], 0} + break + } + } + } + + return plannedMove +} + +func getNeighbors(point [2]int) (neighbors [8][2]int) { + directions := [8][2]int{{-1, -1}, {-1, 0}, {-1, 1}, {0, 1}, {1, 1}, {1, 0}, {1, -1}, {0, -1}} + for i, direction := range directions { + neighbors[i] = [2]int{point[0] + direction[0], point[1] + direction[1]} + } + return +} + +func print(elves map[[2]int][3]int) { + highestY := 0 + highestX := 0 + lowestY := 0 + lowestX := 0 + for key, _ := range elves { + if key[0] > highestY { + highestY = key[0] + } + if key[0] < lowestY { + lowestY = key[0] + } + if key[1] > highestX { + highestX = key[1] + } + if key[1] < lowestX { + lowestX = key[1] + } + } + + for i := lowestY - 1; i < highestY+2; i++ { + fieldLine := []rune{} + for j := lowestX - 1; j < highestX+2; j++ { + val := '.' + _, ok := elves[[2]int{i, j}] + if ok { + val = '#' + } + + fieldLine = append(fieldLine, val) + } + fmt.Println(string(fieldLine)) + } + fmt.Println((highestY-lowestY+1)*(highestX-lowestX+1) - len(elves)) + fmt.Println() + +} diff --git a/day23/input b/day23/input new file mode 100644 index 0000000..d95d7d2 --- /dev/null +++ b/day23/input @@ -0,0 +1,71 @@ +.#.##.#...###.#.#.#.#.#....##....#...##...##..#.##..#..#.#.#.###..#.... +.....#.#..####.......#.###.....##.#..#.###.#.#..##.#.#.#.#..##.#.###### 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