Reverse string in Golang

stringReverse.go

// reverse takes string 's' and reverses it and returns it.
// reverse does not create new string.
func reverse(s string) string {
	// as strings are immutable in Golang, we have to convert
	// to rune slice, which can be modified
	// FYI: https://zetcode.com/golang/rune/
	rStr := []rune(s)
	for i, j := 0, len(rStr)-1; i < j; i, j = i+1, j-1 {

		// swap the letters of the string,
		// like first with last and so on.
		rStr[i], rStr[j] = rStr[j], rStr[i]
	}

	// convert the rune to string and return.
	return string(rStr)
}