64 lines
1.1 KiB
Go
64 lines
1.1 KiB
Go
|
package main
|
||
|
|
|
||
|
|
import (
|
||
|
|
"bufio"
|
||
|
|
"fmt"
|
||
|
|
"os"
|
||
|
|
"strconv"
|
||
|
|
"strings"
|
||
|
|
)
|
||
|
|
|
||
|
|
func main() {
|
||
|
|
content := returnContent("../input")
|
||
|
|
|
||
|
|
horizontal, depth := followGuidance(content)
|
||
|
|
|
||
|
|
fmt.Println(horizontal * depth)
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
func returnContent(path string) *[]string {
|
||
|
|
//read file and return it as an array of integers
|
||
|
|
|
||
|
|
file, err := os.Open(path)
|
||
|
|
var content []string
|
||
|
|
|
||
|
|
if err != nil {
|
||
|
|
fmt.Println("Unlucky, the file didn't open")
|
||
|
|
return &content
|
||
|
|
}
|
||
|
|
defer file.Close()
|
||
|
|
|
||
|
|
scanner := bufio.NewScanner(file)
|
||
|
|
for scanner.Scan() {
|
||
|
|
content = append(content, scanner.Text())
|
||
|
|
}
|
||
|
|
|
||
|
|
return &content
|
||
|
|
}
|
||
|
|
|
||
|
|
func followGuidance(content *[]string) (horizontal int, depth int) {
|
||
|
|
|
||
|
|
for i := 0; i < len(*content); i++ {
|
||
|
|
currentLine := strings.Split((*content)[i], " ")
|
||
|
|
|
||
|
|
value, err := strconv.Atoi(currentLine[1])
|
||
|
|
|
||
|
|
if err != nil {
|
||
|
|
fmt.Println("Uh oh, couldn't find the key! There was an issue with the sonar")
|
||
|
|
}
|
||
|
|
|
||
|
|
switch currentLine[0] {
|
||
|
|
//instructions say that up and down are reversed as we are in the submarine
|
||
|
|
case "up":
|
||
|
|
depth -= value
|
||
|
|
case "down":
|
||
|
|
depth += value
|
||
|
|
default:
|
||
|
|
horizontal += value
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return
|
||
|
|
|
||
|
|
}
|