生成随机字符串并检查重复性

random_string_test.go

package main

import (
	"fmt"

	"github.com/dchest/uniuri"
)

func init() {
	uniuri.StdChars = []byte("1234567890QWERTYUIOPASDFGHJKLZXCVBNM")
}

func main() {
	record := map[string]bool{}
	dup := 0
	limit := 100000000
	for i := 0; i < limit; i++ {
		if i%100000 == 0 {
			fmt.Printf("%d: dup: %d, dup rate: %f\n", i, dup, float64(dup)/float64(limit))
		}
		s := uniuri.NewLen(9)
		if _, ok := record[s]; ok {
			dup += 1
		} else {
			record[s] = true
		}
	}
}