You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
64 lines
1.2 KiB
Go
64 lines
1.2 KiB
Go
2 years ago
|
/**
|
||
|
|
* @Author: Echo
|
||
|
|
* @Author:1711788888@qq.com
|
||
|
|
* @Date: 2021/5/12 10:35
|
||
|
|
* @Desc: 随机数类库
|
||
|
|
*/
|
||
|
|
|
||
|
|
package random
|
||
|
|
|
||
|
|
import (
|
||
|
|
"math/rand"
|
||
|
|
"time"
|
||
|
|
)
|
||
|
|
|
||
|
|
const (
|
||
|
|
AlphaStr = iota // 字母字
|
||
|
|
AlphaLowerStr // 小写字母
|
||
|
|
AlphaUpperStr // 大写字母
|
||
|
|
NumericStr // 数字
|
||
|
|
NoZeroNumericStr // 无0数字
|
||
|
|
)
|
||
|
|
|
||
|
|
// GenStr 生成指定长度的字符串
|
||
|
|
func GenStr(mode, length int) string {
|
||
|
|
var (
|
||
|
|
pos int
|
||
|
|
lastStr string
|
||
|
|
seedStr string
|
||
|
|
)
|
||
|
|
|
||
|
|
rand.Seed(time.Now().UnixNano())
|
||
|
|
switch mode {
|
||
|
|
case AlphaStr:
|
||
|
|
seedStr = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
|
||
|
|
case AlphaLowerStr:
|
||
|
|
seedStr = "abcdefghijklmnopqrstuvwxyz"
|
||
|
|
case AlphaUpperStr:
|
||
|
|
seedStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
|
||
|
|
case NumericStr:
|
||
|
|
seedStr = "0123456789"
|
||
|
|
case NoZeroNumericStr:
|
||
|
|
seedStr = "123456789"
|
||
|
|
}
|
||
|
|
|
||
|
|
seedLen := len(seedStr)
|
||
|
|
for i := 0; i < length; i++ {
|
||
|
|
pos = rand.Intn(seedLen)
|
||
|
|
lastStr += seedStr[pos : pos+1]
|
||
|
|
}
|
||
|
|
|
||
|
|
return lastStr
|
||
|
|
}
|
||
|
|
|
||
|
|
// GenNumeric 生成指定范围的数字
|
||
|
|
func GenNumeric(min int, max int) int {
|
||
|
|
rand.Seed(time.Now().UnixNano())
|
||
|
|
|
||
|
|
if min < max {
|
||
|
|
return rand.Intn(max-min) + min
|
||
|
|
} else {
|
||
|
|
return rand.Intn(min-max) + max
|
||
|
|
}
|
||
|
|
}
|