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44 lines
659 B
44 lines
659 B
package helper
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import (
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"crypto/rand"
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"math/big"
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)
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/**
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* 获取int类型的区间随机数
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*/
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func GetRandInt(min, max int) (r int, err error) {
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_r, err := GetRandInt64(int64(min), int64(max))
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if err != nil {
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return
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}
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r = int(_r)
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return
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}
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/**
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* 获取int64类型的区间随机数
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*/
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func GetRandInt64(min, max int64) (r int64, err error) {
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if min == max {
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r = min
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return
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}
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if min > max {
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max, min = min, max
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}
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result, err := rand.Int(rand.Reader, big.NewInt(max-min))
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if err != nil {
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return
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}
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r = result.Int64() + min
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b, err := rand.Int(rand.Reader, big.NewInt(2))
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if err == nil && b.Int64() == 1 {
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r += 1
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}
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return
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}
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