Go言語で文字列を配列に変換する方法は何ですか?

package main

import (
    "fmt"
    "strings"
)

func main() {
    str := "apple,orange,banana"
    arr := strings.Split(str, ",")
    
    fmt.Println(arr)
}

package main

import (
    "fmt"
    "strconv"
)

func main() {
    str := "1 2 3 4 5"
    splitStr := strings.Fields(str)
    arr := make([]int, len(splitStr))

    for i, s := range splitStr {
        num, err := strconv.Atoi(s)
        if err != nil {
            panic(err)
        }
        arr[i] = num
    }

    fmt.Println(arr)
}