37 lines
626 B
Go
37 lines
626 B
Go
package solutions
|
|
|
|
import "strings"
|
|
|
|
func countTrees(input string, left, down int) int {
|
|
verticalPos := down
|
|
horizontalPos := left
|
|
lines := strings.Split(input, "\n")
|
|
width := len(lines[0])
|
|
treesCount := 0
|
|
|
|
for verticalPos < len(lines) {
|
|
line := lines[verticalPos]
|
|
charAt := string(line[horizontalPos])
|
|
|
|
if charAt == "#" {
|
|
treesCount += 1
|
|
}
|
|
|
|
horizontalPos += left
|
|
horizontalPos = horizontalPos % width
|
|
verticalPos += down
|
|
}
|
|
|
|
return treesCount
|
|
}
|
|
|
|
func Day03Part01(isTest bool) int {
|
|
input := ReadInput("03", isTest)
|
|
|
|
return countTrees(input, 3, 1)
|
|
}
|
|
|
|
func Day03Part02(isTest bool) int {
|
|
return -1
|
|
}
|