naise_pos/util/random.go
2023-03-05 23:35:41 +07:00

36 lines
613 B
Go

package util
import (
"math/rand"
"strings"
"time"
)
const alphabet = "abcdefghijklmnopqrstuvwxyz"
func init() {
rand.Seed(time.Now().UnixNano())
}
// RandomInt generates a random integer between min and max
func RandomInt(min, max int64) int64 {
return min + rand.Int63n(max-min+1)
}
func RandomFloat(max, div float64) float64 {
return (rand.Float64() * max) * div
}
// RandomString generates a random string of length n
func RandomString(n int) string {
var sb strings.Builder
k := len(alphabet)
for i := 0; i < n; i++ {
c := alphabet[rand.Intn(k)]
sb.WriteByte(c)
}
return sb.String()
}