נתונה הפעולה הבאה:

public static void What(Queue<int> q)
{
    int num1, num2;
    bool found;
    Queue<int> temp1 = new Queue<int>();
    Queue<int> temp2 = new Queue<int>();
    while(!q.IsEmpty())
    {
        num1 = q.Remove();
        found = false;
        while(!q.IsEmpty())
        {
            num2 = q.Remove();
            if(num1 == num2)
                found = true;
            temp1.Insert(num2);
        }
        while(!temp1.IsEmpty())
            q.Insert(temp1.Remove());
        if(!found)
            temp2.Insert(num1);
    }
    while(!temp2.IsEmpty())
        q.Insert(temp2.Remove());
}