aoc2023/day-14/util.go

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2023-12-14 22:22:41 +00:00
package main
import (
"bufio"
"log"
"os"
)
// readlines reads lines from stdin.
// it returns them as an array of strings
func readlines() []string {
lines := []string{}
scanner := bufio.NewScanner(os.Stdin)
for scanner.Scan() {
lines = append(lines, scanner.Text())
}
if err := scanner.Err(); err != nil {
log.Fatal(err)
}
return lines
}
// replaceAtIndex replaces a character in a string at index i
func replaceAtIndex(in string, r rune, i int) string {
out := []rune(in)
out[i] = r
return string(out)
}