package main

import "fmt"

func compressString(str string) string {
	return str
}

func removeDuplicate(str string) string {
	return str
}

func reverseAndDouble(str string) string {
	return str
}

func printCharacters(str string) string {
	return str
}

func main() {
	hello := "Hello, World!"

	fmt.Print(compressString("aaaabbccgh"))
	fmt.Print(compressString("golang"))
	fmt.Print(removeDuplicate("aabccchbbccaaa"))
	fmt.Print(reverseAndDouble("abcdfgh"))
	fmt.Print(printCharacters("golang"))

	fmt.Println(hello)
}