我試圖用正則表達式從生成的字符串中刪除整數，但這不會給我所需范圍內的長度（許多會小于最小值）package mainimport ( "fmt" "log" "math/rand" "regexp" "time")func randomString(length int) string { rand.Seed(time.Now().UnixNano()) b := make([]byte, length) rand.Read(b) return fmt.Sprintf("%x", b)[:length]}func randomLength(minL, maxL int) int { rand.Seed(time.Now().UnixNano()) return rand.Intn(maxL-minL) + minL}func main() { reg, err := regexp.Compile("[^a-zA-Z]+") if err != nil { log.Fatal(err) } for i := 0; i < 10; i++ { processedString := reg.ReplaceAllString(randomString(randomLength(8, 16)), "") println(processedString) }}
2 回答
一只斗牛犬
TA貢獻1784條經驗 獲得超2個贊
var seededRand = rand.New(rand.NewSource(time.Now().UnixNano()))
func StringWithCharset(length int, charset string) string {
b := make([]byte, length)
for i := range b {
b[i] = charset[seededRand.Intn(len(charset)-1)]
}
return string(b)
}
func main() {
rangeStart := 0
rangeEnd := 10
offset := rangeEnd - rangeStart
randLength := seededRand.Intn(offset) + rangeStart
charSet := "aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPqQrRsStTuUvVwWxXyYzZ"
randString := StringWithCharset(randLength, charSet)
}
米琪卡哇伊
TA貢獻1998條經驗 獲得超6個贊
您只需要定義您正在使用的字母表。類似于以下內容（您可以在 Go Playground 中擺弄它）。
package main
import (
"fmt"
"math/rand"
"strings"
"time"
)
func main() {
rand.Seed(time.Now().UnixNano())
var alphabet []rune = []rune("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz")
rs := randomString(20, alphabet)
fmt.Printf("This is pretty random: %s\n", rs)
}
func randomString(n int, alphabet []rune) string {
alphabetSize := len(alphabet)
var sb strings.Builder
for i := 0; i < n; i++ {
ch := alphabet[rand.Intn(alphabetSize)]
sb.WriteRune(ch)
}
s := sb.String()
return s
}
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