package main

import (
	"os"
	"log"
	"fmt"
	"strings"
	"encoding/hex"
)

func main() {
	var bin []byte
	var s1 string
	var s string = "0 1 2 3 4 5 6 7 8 9 a b c d e f ff aa 00 0a 0c"

	bytes := strings.Split(s, " ")
	for _, b := range bytes {
		if (len(b) == 1) {
			s1 = s1 + string('0') + b
		}
		fmt.Println(b)
	}

	for _, b := range bytes {
		s1 = s1 + b
	}

	fmt.Println(s1)

	bin, _ = hex.DecodeString(s1)

	fmt.Println(bin)

	f, err := os.Create("out.bin")
	if err != nil {
		log.Fatal(err)
	}
	defer f.Close()

	f.Write(bin)
}