package main
 
import (
    "bufio"
    "fmt"
    "math/rand"
    "os"
    "time"
)
 
func main() {
 
    users := make(map[int]string)
 
    users[0] = "Mike"
    users[1] = "Paul"
    users[2] = "Steve"
    users[3] = "Lawrence"
    users[4] = "Stephen"
    users[5] = "James"
 
    getNextSpeaker(users)
 
}
 
func getNextSpeaker(users map[int]string) {
    numUsers := len(users)
    list := randList(1, numUsers)
 
    for _, element := range list {
        fmt.Println(users[element-1])
        pressAnyKey()
    }
 
}
 
func randList(min, max int) []int {
    if max < min {
        min, max = max, min
    }
    length := max - min + 1
    t0 := time.Now()
    rand.Seed(int64(t0.Nanosecond()))
    list := rand.Perm(length)
    for index, _ := range list {
        list[index] += min
    }
 
    return list
}
 
func pressAnyKey() string {
    fmt.Println("Press Return To Continue...")
    reader := bufio.NewReader(os.Stdin)
    input, err := reader.ReadString('\n')
    if err != nil {
        panic(err)
    }
 
    return input
}

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