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Able to read input

Piotr Czajkowski 1 week ago
parent
commit
60ccc89ee7
1 changed files with 74 additions and 0 deletions
  1. 74 0
      15/code.go

+ 74 - 0
15/code.go

@@ -0,0 +1,74 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"log"
+	"os"
+)
+
+type Point struct {
+	y, x int
+}
+
+func findRobot(line string) *Point {
+	for i, char := range line {
+		if char == '@' {
+			return &Point{x: i}
+		}
+	}
+
+	return nil
+}
+
+func readInput(file *os.File) (*Point, [][]byte, []byte) {
+	scanner := bufio.NewScanner(file)
+	var matrix [][]byte
+	var moves []byte
+	var robot *Point
+
+	var y int
+	readingMatrix := true
+	for scanner.Scan() {
+		line := scanner.Text()
+		if line == "" {
+			if readingMatrix {
+				readingMatrix = false
+				continue
+			}
+
+			break
+		}
+
+		if readingMatrix {
+			matrix = append(matrix, []byte(line))
+			if robot == nil {
+				robot = findRobot(line)
+				if robot != nil {
+					robot.y = y
+				}
+
+				y++
+			}
+		} else {
+			moves = append(moves, []byte(line)...)
+		}
+	}
+
+	return robot, matrix, moves
+}
+
+func main() {
+	if len(os.Args) < 2 {
+		log.Fatal("You need to specify a file!")
+	}
+
+	filePath := os.Args[1]
+	file, err := os.Open(filePath)
+	if err != nil {
+		log.Fatalf("Failed to open %s!\n", filePath)
+	}
+
+	robot, matrix, moves := readInput(file)
+	fmt.Println(robot, matrix, moves)
+}