static void BumpUpRankOfMovieAndAllItsActorsAndDirectors(MoviesDB moviesDB, double factor, bool printSep, int width) { long msecs1 = Environment.TickCount; int maxId = (int)moviesDB.MaxMovieId(); int numOfIds = (int)moviesDB.NumOfMovies() / 4; int[] randomIds = RandomInts(maxId, numOfIds, 735025); foreach (int id in randomIds) { if (moviesDB.MovieExists(id)) { moviesDB.BumpUpRankOfMovieAndItsActorsAndDirectors(id, factor); } } long msecs2 = Environment.TickCount; PrintTime(msecs2 - msecs1, printSep, width); }