block2.go

// This program demonstrates how to reverse string in go
package main

import "log"

func main() {
	log.Println(reverse("hello world!"))
}

func reverse(s string) string {
	r := []rune(s)
	for i, j := 0, len(r)-1; i < len(r)/2; i, j = i+1, j-1 {
		r[i], r[j] = r[j], r[i]
	}
	return string(r)
}