commit: 519e35d37da4221abe56a4ea21775cc29c5fbf39
parent: d54a4164b3a23faf48d61643c7007164d1b2a9b9
Author: Haelwenn (lanodan) Monnier <contact@hacktivis.me>
Date: Tue, 3 Dec 2019 12:14:44 +0100
day2: Dump current code
Diffstat:
| A | day2.go | 65 | +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| A | go.mod | 3 | +++ |
2 files changed, 68 insertions(+), 0 deletions(-)
diff --git a/day2.go b/day2.go
@@ -0,0 +1,65 @@
+package main
+
+import (
+ "fmt"
+ "strconv"
+ "strings"
+)
+
+func line_positions(line string) [][2]int {
+ line_split := strings.Split(line, ",")
+ fmt.Printf("%9s\n", line_split)
+ position := [2]int{0, 0} // (x,y)
+ positions := make([][2]int, len(line_split))
+
+ for i, move := range line_split {
+ direction := strings.Split(move, "")[0]
+ amount, err := strconv.Atoi(move[1:])
+ if err != nil {
+ fmt.Printf("Error: %s", err)
+ }
+
+ switch direction {
+ case "U":
+ position[0] += amount
+ case "D":
+ position[0] -= amount
+ case "L":
+ position[1] += amount
+ case "R":
+ position[1] -= amount
+ }
+
+ positions[i] = position
+
+ // fmt.Printf("%s%02d(% 4d,% 4d)\n", direction, amount, position[0], position[1])
+ }
+
+ fmt.Printf("%3d\n", positions)
+
+ return positions
+}
+
+func Intersection(a, b [][2]int) (c [][2]int) {
+ m := make(map[[2]int]bool)
+
+ for _, item := range a {
+ m[item] = true
+ }
+
+ for _, item := range b {
+ if _, ok := m[item]; ok {
+ c = append(c, item)
+ }
+ }
+ return
+}
+
+func main() {
+ //line1 := line_positions("R75,D30,R83,U83,L12,D49,R71,U7,L72")
+ //line2 := line_positions("U62,R66,U55,R34,D71,R55,D58,R83")
+ line1 := line_positions("R98,U47,R26,D63,R33,U87,L62,D20,R33,U53,R51")
+ line2 := line_positions("U98,R91,D20,R16,D67,R40,U7,R15,U6,R7")
+
+ fmt.Printf("%3d\n", Intersection(line1, line2))
+}
diff --git a/go.mod b/go.mod
@@ -0,0 +1,3 @@
+module hacktivis.me/git/adventofcode
+
+go 1.12
