|
|
@@ -79,13 +79,56 @@ func makeDiagram(points [][][]int) [][]int {
|
|
|
largestX := largest(points, 0)
|
|
|
largestY := largest(points, 1)
|
|
|
|
|
|
- diagram := make([][]int, largestY-1)
|
|
|
+ diagram := make([][]int, largestY+1)
|
|
|
for i, _ := range diagram {
|
|
|
- diagram[i] = make([]int, largestX-1)
|
|
|
+ diagram[i] = make([]int, largestX+1)
|
|
|
}
|
|
|
return diagram
|
|
|
}
|
|
|
|
|
|
+func fillDiagram(points [][][]int, diagram [][]int) {
|
|
|
+ for _, point := range points {
|
|
|
+ if point[0][0] != point[1][0] && point[0][1] != point[1][1] {
|
|
|
+ continue
|
|
|
+ }
|
|
|
+
|
|
|
+ if point[0][0] == point[1][0] {
|
|
|
+ start := point[0][1]
|
|
|
+ end := point[1][1]
|
|
|
+ if start > end {
|
|
|
+ start, end = end, start
|
|
|
+ }
|
|
|
+
|
|
|
+ for i := start; i <= end; i++ {
|
|
|
+ diagram[i][point[0][0]]++
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ start := point[0][0]
|
|
|
+ end := point[1][0]
|
|
|
+ if start > end {
|
|
|
+ start, end = end, start
|
|
|
+ }
|
|
|
+
|
|
|
+ for i := start; i <= end; i++ {
|
|
|
+ diagram[point[0][1]][i]++
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+func part1(diagram [][]int) int {
|
|
|
+ var count int
|
|
|
+ for _, row := range diagram {
|
|
|
+ for _, value := range row {
|
|
|
+ if value >= 2 {
|
|
|
+ count++
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ return count
|
|
|
+}
|
|
|
+
|
|
|
func main() {
|
|
|
if len(os.Args) < 2 {
|
|
|
log.Fatal("Please provide a file name as argument")
|
|
|
@@ -93,5 +136,6 @@ func main() {
|
|
|
|
|
|
input := readInput(os.Args[1])
|
|
|
diagram := makeDiagram(input)
|
|
|
- fmt.Println(diagram)
|
|
|
+ fillDiagram(input, diagram)
|
|
|
+ fmt.Println("Part1: ", part1(diagram))
|
|
|
}
|
