private async void RandomButton_Click(object sender, RoutedEventArgs e)
{
//总次数倒数之和
double TotalCount = 0;
double random = 0;
//概率模型
double[] pro = new double[ViewModel.countitems.Count];
for (int i = 0; i < ViewModel.countitems.Count; i++)
{
double a = 1.0 / (double)ViewModel.countitems[i].count;
TotalCount += a;
}
for (int i = 0; i < ViewModel.countitems.Count; i++)
{
double a = 1.0 / (double)ViewModel.countitems[i].count;
if (i == 0)
{
pro[i] = a / TotalCount;
}
else
{
pro[i] = a / TotalCount + pro[i - 1];
}
}
Random ro = new Random();
random = ro.NextDouble();
int no = 0;
for (int i = 0; i < ViewModel.countitems.Count; i++)
{
if (random < pro[i])
{
no = i;
break;
}
}
while (ViewModel.state[no] == false)
{
ro = new Random();
random = ro.NextDouble();
no = 0;
for (int i = 0; i < ViewModel.countitems.Count; i++)
{
if (random < pro[i])
{
no = i;
for (int j = 0; i < ViewModel.state.Length; i++)
{
ViewModel.state[i] = false;
}
break;
}
}
}
this.pict.Source = new BitmapImage(ViewModel.memberitems[no].pic);
//(pict.Source as BitmapImage).UriSource = ViewModel.memberitems[no].pic;
DateTime date = DateTime.Now;
string note = Note.Text;
var result = await HttpUtil.GetMemberNames(App.account); //狗哥把这段改为直接从mem_List拿名字
string name = (string)result["names"][no];
DutyItem D = new DutyItem(no, name, date, note);
ViewModel.dutyitems.Add(D);
await HttpUtil.AddDuty(App.account, no, D);
}
