Performance Test

TimeSpan PerformanceTest(Action action, int repeats)
            {
                var sw = new Stopwatch();
                sw.Start();
                for (int i = 0; i < repeats; i++) 
                    action();
                sw.Stop();
                return sw.Elapsed;
            }
            
(TimeSpan action1, TimeSpan action2) ComparePerformanceTest(Action action1, Action action2, int repeats) => 
        (PerformanceTest(action1, repeats), PerformanceTest(action2, repeats));