重复输出字符或字符串

class Bo
    {
        public void RepeatCharacter(char c, int times)
        {
            string output = new String(c, times);
            Console.WriteLine(output);
        }

        public void RepeatString(string str, int times)
        {
            var output = string.Concat(Enumerable.Repeat(str, times));
            Console.WriteLine(output);
        }
    }

 class Program
    {
        static void Main(string[] args)
        {
            Bo obj = new Bo();

            obj.RepeatCharacter(‘$‘, 8);
            Console.WriteLine();

            obj.RepeatString("insus", 8);
            Console.WriteLine();
        }
    }