public void Set(T v)
{
int index = mData.IndexOf(v);
if (index != -1)
{
//找到元素
mData.Delete(index, out _);
mData.Append(v);
}
else
{
//添加数据
if (mData.IsFull())
{
mData.Delete(0, out _);
}
mData.Append(v);
}
}