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                ~~~ import ( "fmt" "math/rand" "time" ) func main() { //初始10個紅包, 10000元錢 count, amount := int64(10), int64(10000) //剩余金額 remain := amount //驗證紅包算法的總金額,最后sum應該==amount sum := int64(0) //進行發紅包 for i := int64(0); i < count; i++ { x := DoubleAverage(count-i, remain) //金額減去 remain -= x //發了多少錢 sum += x //金額轉成元 fmt.Println(i+1, "=", float64(x)/float64(100)) } fmt.Println() fmt.Println("總和 ", sum) } //二倍均值算法,count剩余個數,amount剩余金額 func DoubleAverage(count, amount int64) int64 { //最小錢 min := int64(1) if count == 1 { //返回剩余金額 return amount } //計算最大可用金額,min最小是1分錢,減去的min,下面會加上,避免出現0分錢 max := amount - min*count //計算最大可用平均值 avg := max / count //二倍均值基礎加上最小金額,防止0出現,作為上限 avg2 := 2*avg + min //隨機紅包金額序列元素,把二倍均值作為隨機的最大數 rand.Seed(time.Now().UnixNano()) //加min是為了避免出現0值,上面也減去了min x := rand.Int63n(avg2) + min return x } ~~~
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