private static string[] WorkWithStringArray(string[] words)
        {
            var volves = new string[] {"A", "E", "I", "O", "U"};

            var min_i = 0;
            for (var i = 0; i < words.Length; i++)
            {
                if (words[min_i].Length > words[i].Length)
                    min_i = i;
            }

            foreach (var c in volves)
            {
                words[min_i] = words[min_i].Replace(c, "A");
            }

            return words;
        }