--- /dev/null
+
+package day2
+
+import (
+ "fmt"
+ "os"
+ "io"
+ "bufio"
+ "strings"
+ "strconv"
+)
+
+type Position struct {
+ horiz, depth int
+}
+
+type Move struct {
+ horiz, depth int
+}
+
+func f1(moves []Move) Position {
+ p := Position{}
+ for _, d := range moves {
+ p.horiz += d.horiz
+ p.depth += d.depth
+ }
+
+ return p
+}
+
+func parseMoves(r io.Reader) (moves []Move, err error) {
+ s := bufio.NewScanner(r)
+
+ for s.Scan() {
+ m := Move{}
+ ws := strings.Split(s.Text(), " ")
+ if len(ws) != 2 {
+ err = fmt.Errorf("Wrong move %v\n", ws)
+ return
+ }
+ switch ws[0] {
+ case "forward":
+ m.horiz, err = strconv.Atoi(ws[1])
+ if err != nil {
+ err = fmt.Errorf("Wrong move number %v\n", ws)
+ return
+ }
+ case "up":
+ m.depth, err = strconv.Atoi(ws[1])
+ if err != nil {
+ err = fmt.Errorf("Wrong move number %v\n", ws)
+ return
+ }
+ m.depth = 0 - m.depth
+ case "down":
+ m.depth, err = strconv.Atoi(ws[1])
+ if err != nil {
+ err = fmt.Errorf("Wrong move number %v\n", ws)
+ return
+ }
+ default:
+ moves = nil
+ err = fmt.Errorf("Wrong move %v\n", ws)
+ return
+ }
+
+ fmt.Printf("Move: %#v\n", m)
+ moves = append(moves, m)
+ }
+
+ return
+}
+func RunF1(input string) {
+ h0, err := os.Open(input)
+ if err != nil { return }
+ defer h0.Close()
+
+ moves, err := parseMoves(h0)
+ if err != nil {
+ fmt.Printf("Error: %v\n", err)
+ return
+ }
+ p := f1(moves)
+
+ fmt.Printf("Answer1: %d (%d, %d)\n", p.horiz * p.depth, p.horiz, p.depth)
+}
package main
import (
- "sgf-dma/aoc-2021/day1"
+ //"sgf-dma/aoc-2021/day1"
+ "sgf-dma/aoc-2021/day2"
)
func main() {
- day1.RunF1("day1/input.txt")
- day1.RunF2("day1/input.txt")
+ //day1.RunF1("day1/input.txt")
+ //day1.RunF2("day1/input.txt")
+
+ day2.RunF1("day2/input.txt")
}
projects / aoc-2021.git / commitdiff