55 lines
901 B
Go
55 lines
901 B
Go
package utils
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import (
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"fmt"
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"go_dreamfactory/sys/configure"
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"math/rand"
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"strings"
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"github.com/Pallinder/go-randomdata"
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)
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func GenValidateCode(width int) string {
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numeric := [10]byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9}
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r := len(numeric)
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rand.Seed(configure.Now().UnixNano())
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var sb strings.Builder
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for i := 0; i < width; i++ {
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fmt.Fprintf(&sb, "%d", numeric[rand.Intn(r)])
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}
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return sb.String()
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}
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// 随机一组随机数
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// number >= start and < end num 随机数个数
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func RandomNumbers(start, end, num int) []int {
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if end-start < 0 || num > (end-start) {
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return nil
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}
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if end-start == 1 {
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n := randomdata.Number(start, end)
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return []int{n}
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}
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var i int
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arr := make([]int, num)
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boo := make(map[int]int)
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for {
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if i == num {
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break
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}
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n := randomdata.Number(start, end)
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if _, ok := boo[n]; ok {
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continue
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}
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boo[n] = i
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arr[i] = n
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i++
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}
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return arr
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}
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