使用Golang生成双色球和大乐透号码

每次买彩票在彩票站机选的号码基本都中不了，于是想着自己也手写一个随机生成彩票号码的程序。下面是生成双色球和大乐透的实现代码。

双色球 红球需要从 1- 33 的号码中，选出6个号码； 篮球需要从1-16的号码中，选出1个号码。即 6红 + 1蓝
大乐透 红球需要从 1- 35 的号码中，选出5个号码； 篮球需要从1-12的号码中，选出2个号码。即 5红 + 2蓝

package lottery

import (
    "fmt"
    "math/rand"
    "sort"
    "testing"
    "time"
)

var (
    doubleRed  = []int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33}
    doubleBlue = []int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16}

    bigRed  = []int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35}
    bigBlue = []int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}
)

// TestDoubleBall 双色球
func TestDoubleBall(t *testing.T) {
    num := 5
    balls := randDoubleBall(num)
    fmt.Println("[双色球]", num, "注")
    nicePrint(balls)
}

// TestBigHappy 大乐透
func TestBigHappy(t *testing.T) {
    num := 5
    balls := randBigHappy(num)
    fmt.Println("[大乐透]", num, "注")
    nicePrint(balls)
}

// Balls 选球
type Balls struct {
    RedBalls []int
    BlueBall []int
}

// randDoubleBall 随机生成 多组双色球号码
func randDoubleBall(num int) []*Balls {
    var result []*Balls
    rand.Seed(time.Now().UnixNano())

    for i := 0; i < num; i++ {
        doubleBall := &Balls{}
        doubleRedCopy := make([]int, len(doubleRed))
        copy(doubleRedCopy, doubleRed)
        for j := 0; j < 6; j++ {
            redBallIndex := rand.Intn(len(doubleRedCopy) - 1)
            doubleBall.RedBalls = append(doubleBall.RedBalls, doubleRedCopy[redBallIndex])
            doubleRedCopy = removeItem(doubleRedCopy, redBallIndex)
            time.Sleep(time.Nanosecond * time.Duration(redBallIndex))
        }
        doubleBall.RedBalls = sortItems(doubleBall.RedBalls)

        blueBallIndex := rand.Intn(len(doubleBlue) - 1)
        doubleBall.BlueBall = append(doubleBall.BlueBall, doubleBlue[blueBallIndex])
        result = append(result, doubleBall)
        time.Sleep(time.Nanosecond * time.Duration(blueBallIndex))
    }
    return result
}

// randBigHappy 随机生成多组大乐透号码
func randBigHappy(num int) []*Balls {
    var result []*Balls
    rand.Seed(time.Now().UnixNano())

    for i := 0; i < num; i++ {
        bigBall := &Balls{}
        bigRedCopy := make([]int, len(doubleRed))
        bigBlueCopy := make([]int, len(bigBlue))
        copy(bigRedCopy, bigRed)
        copy(bigBlueCopy, bigBlue)

        for j := 0; j < 5; j++ {
            redBallIndex := rand.Intn(len(bigRedCopy) - 1)
            bigBall.RedBalls = append(bigBall.RedBalls, bigRedCopy[redBallIndex])
            bigRedCopy = removeItem(bigRedCopy, redBallIndex)
            time.Sleep(time.Nanosecond * time.Duration(redBallIndex))
        }
        bigBall.RedBalls = sortItems(bigBall.RedBalls)

        for k := 0; k < 2; k++ {
            blueBallIndex := rand.Intn(len(bigBlueCopy) - 1)
            bigBall.BlueBall = append(bigBall.BlueBall, bigBlueCopy[blueBallIndex])
            bigBlueCopy = removeItem(bigBlueCopy, blueBallIndex)
            time.Sleep(time.Nanosecond * time.Duration(blueBallIndex))
        }
        bigBall.BlueBall = sortItems(bigBall.BlueBall)
        result = append(result, bigBall)
    }
    return result
}


// nicePrint 美化输出打印
func nicePrint(balls []*Balls) {
    for i := 0; i < len(balls); i++ {
        fmt.Print("红球：")
        for j := 0; j < len(balls[i].RedBalls); j++ {
            fmt.Print(" ", balls[i].RedBalls[j])
        }
        fmt.Println()
        fmt.Print("蓝球：")
        for j := 0; j < len(balls[i].BlueBall); j++ {
            fmt.Print(" ", balls[i].BlueBall[j])
        }
        fmt.Println()
        fmt.Println()
    }
}

// sortItems 号码排序
func sortItems(s []int) []int {
    sort.Ints(s)
    return s
}

// removeItem 移除元素
func removeItem(s []int, index int) []int {
    s = append(s[:index], s[index+1:]...)
    return s
}

测试结果：

[双色球] 5 注

红球： 10 12 26 29 31 32
蓝球： 13

红球： 4 12 15 18 19 24
蓝球： 2

红球： 6 13 14 16 20 32
蓝球： 13

红球： 3 6 12 25 31 32
蓝球： 3

红球： 7 13 14 17 29 30
蓝球： 9


[大乐透] 5 注

红球： 7 8 14 16 24
蓝球： 11 14

红球： 5 8 12 13 25
蓝球： 5 13

红球： 6 13 19 27 32
蓝球： 4 14

红球： 15 17 18 31 32
蓝球： 12 13

红球： 12 17 19 30 31
蓝球： 1 3