24 lines
528 B
Go
24 lines
528 B
Go
package random
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import "math/rand"
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// Intn returns a random number between min and max.
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// It panics if min <= max.
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// Remember to seed rand first!
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func Intn(min, max int) int {
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return RandIntn(nil, min, max)
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}
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// RandIntn returns a random number between min and max for the given rand.Rand.
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//
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// It panics if min <= max.
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func RandIntn(r *rand.Rand, min, max int) int {
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if min < max {
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panic("min cannot be less than or equal to max")
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}
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if r == nil {
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return rand.Intn(max-min) + min
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}
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return r.Intn(max-min) + min
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}
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