members是未筛选前所有的数据

winMembers是已经筛选出存在的数据

me是自身数据

var members : [Int] = [0 , 1 ,2 ,3 ,4 ,5 ,6] //总成员
var winMembers : [Int] = [0 ,2, 3, 4, 6] //获奖成员
var me : Int = 5 //自己

func getMemberWith(members : [Int]){
    var index = Int(arc4random()) % members.count
    var isGoOn : Bool = true
    var count = 0
    repeat{
        count += 1
        if winMembers.contains(members[index]) || members[index] == me{
            //已获奖的包含抽出的这个人或者是自己
            print("重复")
            index = (index + 1) % members.count
        }else{
            //中奖
            isGoOn = false
            winMembers.append(members[index])
            print("中奖\(members[index])")
        }
    }while isGoOn && count < 10
}