package morestrings

// capital func exports it.
func ReverseRunes(s string) string {
  r := []rune(s)
  for i, j := 0, len(r) - 1; i < len(r) / 2; i, j = i+1, j-1 {
    r[i], r[j] = r[j], r[i]
  }
  return string(r)
}