GitHub - leonardoeloy/bijectiv: A library for URL shortener encoding/decoding in Go.

Bijectiv

go get github.com/leonardoeloy/bijectiv

package main

import (
	"github.com/leonardoeloy/bijectiv"
	"fmt"
)

func main() {
	b := bijectiv.New()
	fmt.Printf("Encoded value of 100 is %s\n", b.Encode(100))
	fmt.Printf("Decoded value of 'bM' is %d\n", b.Decode("bM"))

	b = bijectiv.NewAlphabet("MYRESTRICTEDALPHABET")
	fmt.Printf("Encoded value of 100 with custom alphabet is %s\n", b.Encode(100))
}