查询最大值

using System;
using System.Collections.Generic;
using System.Text.RegularExpressions;

namespace Test
{
    class Program
    {
        static void Main(string[] args)
        {
            int numberCount = 4;
            List<double> values = new List<double>(numberCount);
            do
            {
                Console.WriteLine("Please Input Number {0}:", values.Count + 1);
                string input = Console.ReadLine();
                if (Regex.IsMatch(input, @"^\d+(\.\d+)?$"))
                {
                    values.Add(double.Parse(input));
                }
            }
            while (values.Count < numberCount);
            Console.WriteLine("Max Value Is :{0}", Max(values.ToArray()));
            Console.ReadLine();
        }
        static double Max(params double[] values)
        {
            double max = 0;
            foreach (double d in values)
            {
                if (d > max) max = d;
            }
            return max;
        }
    }
}