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49 lines
910 B
49 lines
910 B
4 months ago
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package utils
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import (
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"math"
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"math/rand"
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"strconv"
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"time"
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)
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func GetInvitation() string {
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var bs = make([]byte, 6)
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for i := 0; i < 6; i++ {
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rand.Seed(time.Now().UnixNano())
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flag := rand.Intn(2)
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if flag == 1 {
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bs[i] = byte(rand.Float64()*10 + 48)
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} else {
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bs[i] = byte(rand.Float64()*26 + 65)
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}
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}
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return string(bs)
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}
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func GetInvitationLen(length int) string {
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var bs = make([]byte, length)
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for i := 0; i < length; i++ {
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rand.Seed(time.Now().UnixNano())
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flag := rand.Intn(3)
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if flag == 1 {
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bs[i] = byte(rand.Float64()*10 + 48)
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} else if flag == 0 {
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bs[i] = byte(rand.Float64()*26 + 65)
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} else {
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bs[i] = byte(rand.Float64()*26 + 97)
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}
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}
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return string(bs)
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}
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func StringFloat64ToInt(s string) int {
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f1, err := strconv.ParseFloat(s, 64)
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if err != nil {
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return 0
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}
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s1 := strconv.FormatFloat(math.Ceil(f1), 'f', -1, 64)
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i, _ := strconv.Atoi(s1)
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return i
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}
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