Reverse a string (2 different ways) in go

reverse.go

package main

import (
	"fmt"
	"strings"
)

var (
	word                = "test"
	reversedstringarray []string
	reversedstring      string
)

func main() {

	reverse(word)
	reverse2(word)
}

func reverse(word string) {
	stringfinalindex := len(word) - 1
	stringarray := strings.Split(word, "")

	for i := range stringarray {
		reversedstringarray = append(reversedstringarray, stringarray[stringfinalindex-i])
		reversedstring = strings.Join(reversedstringarray, "")
	}

	fmt.Println(reversedstring)
}

func reverse2(word string) {
	stringfinalindex := len(word) - 1
	stringarray := strings.Split(word, "")

	for i := stringfinalindex; i < 0; i-- {
		reversedstringarray = append(reversedstringarray, stringarray[i])
	}
	fmt.Println(reversedstring)

}