ReverseString

package main

import (
    "fmt"
)

func ReverseString(s string) string {
    reversed := ""
    for i := range s {
        reversed += string(s[len(s) - 1 - i])
    }
    return reversed
}

func main() {
    str := "Hello World!"
    fmt.Println(ReverseString(str))
    fmt.Println(ReverseString(""))
}