System.Windows.Forms.FormCollection.Sort C# (CSharp) Method

        public void Sort()
        {
            bool topMostForms = true;
            int lastTopMost = -1;
            for (int i = items.Count - 1; i >= 0; i--)
            {
                var form = items[i];
                if (topMostForms)
                {
                    if (form.TopMost == false)
                        topMostForms = false;
                    else
                        lastTopMost = i;
                }
                else
                {
                    if (form.TopMost)
                    {
                        if (lastTopMost != -1)
                        {
                            items.Insert(lastTopMost, form);
                            lastTopMost--;
                        }
                        else
                        {
                            lastTopMost = items.Count - 1;
                            items.Add(form);
                        }
                        items.RemoveAt(i);
                    }
                }
            }
        }