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35 lines
637 B
Go
35 lines
637 B
Go
1 year ago
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package nrandom
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import (
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"math/rand"
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"time"
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)
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// RandInt generate random int between min and max, maybe min, not be max.
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//
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// Usage:
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//
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// RandInt(10, 99)
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// RandInt(100, 999)
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// RandInt(1000, 9999)
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func RandInt(min, max int) int {
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return RandIntWithSeed(min, max, time.Now().UnixNano())
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}
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// RandIntWithSeed return a random int at the [min, max)
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// Usage:
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//
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// seed := time.Now().UnixNano()
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// RandomIntWithSeed(1000, 9999, seed)
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func RandIntWithSeed(min, max int, seed int64) int {
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if min == max {
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return min
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}
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if max < min {
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min, max = max, min
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}
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r := rand.New(rand.NewSource(seed))
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return r.Intn(max-min) + min
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}
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