package main

import (
	"math/rand"
	"time"
)

func init() {
	rand.Seed(time.Now().UnixNano())
}

func randomString(n int) string {
	const letters = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
	data := make([]byte, n)
	for i := range data {
		data[i] = letters[rand.Intn(len(letters))]
	}
	return string(data)
}
