roomid.go
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package roommgr
import (
"math/rand"
"time"
)
var roomids = make([]uint32, 0)
func swap(a int, b int) {
tmp := roomids[a]
roomids[a] = roomids[b]
roomids[b] = tmp
}
func RoomIdInit() {
var i uint32
for i = 100000; i < 1000000; i++ {
roomids = append(roomids, i)
}
source := rand.NewSource(time.Now().UnixNano())
r := rand.New(source)
for i := 1000000 - 100000 - 1; i > 0; i-- {
index := r.Int() % int(i)
swap(int(i), index)
}
}
func Delete(x uint32) {
for j, id := range roomids {
if id == x {
roomids = append(roomids[:j], roomids[j+1:]...)
}
}
}
func GetRoomid() uint32 {
var x uint32
x, roomids = roomids[len(roomids)-1], roomids[:len(roomids)-1]
return x
}
func Push(x uint32) {
roomids = append(roomids, x)
}