aoc2024/day-06/internal/one/util.go

36 lines
573 B
Go

package one
import (
"bufio"
"io"
"strings"
)
func parseLines(r io.Reader) (*graph, error) {
graph := newGraph()
count := 0
scanner := bufio.NewScanner(r)
for scanner.Scan() {
line := scanner.Text()
indx := strings.Index(line, "^")
if indx != -1 {
graph.startPoint = point{coords{indx, count}, N}
}
graph.data = append(graph.data, scanner.Text())
count++
}
if err := scanner.Err(); err != nil {
return nil, err
}
return graph, nil
}
func replaceAtIndex(s string, r rune, i int) string {
out := []rune(s)
out[i] = r
return string(out)
}