Is there a way to "pseudo"-randomly select an element from a list that wasn't chosen before? I know about the choice function, which returns a random item from the list, but without taking into account previous chosen items. I could keep track of which elements were already picked, and keep randomly choose another not yet selected item, but this might include nested loops, etc.
I could also for example remove the element chose from the list at each iteration, but this does not seem a good solution, too.
My question is: is there a "aware" choice function that selects only items that weren't chosen before? Note that I'm not asking how to implement such a function, but possible solutions are of course well-accepted too.
答案 0 :(得分：1)
As others have said, you can shuffle the list and then use the protected override void OnPaint(PaintEventArgs e)
{
//base.OnPaint(e);
LockUnlockBitsExample(e)
}
method. Here is an example:
list.pop()答案 1 :(得分：0)
Shuffle the list and pop elements from the top. That will only produce each list element once.