C#

        double min = 0;
        double max = 0;

        for (int i = 0; i < nums; i++)
        {
            double currNum = double.Parse(Console.ReadLine());

            if (i == 0)
            {
                min = currNum;
                max = currNum;
            }
            else
            {
                if (currNum > max)
                {
                    max = currNum;
                }

                if (currNum < min)
                {
                    min = currNum;
                }
            }
        }