猜數字遊戲

上班無聊，寫了個猜數字遊戲，童年的回憶啊。

using System;
using System.Collections.Generic;

namespace NumGuess
{
    class Program
    {
        static void Main(string[] args)
        {
            List<int> resList = CreatRes();
            //for (int i = 0; i < resList.Count; i++)
            //{
            //    Console.Write(resList[i]);
            //}

            Console.WriteLine("Input 4 different Number:\n");

            int aCount = 0;
            int bCount = 0;
            int timeCount = 0;
            while (aCount < 4) {
                timeCount++;
                string numStr = Console.ReadLine();
                List<int> inputList = new List<int>();
                for (int i = 0; i < numStr.Length; i++)
                {
                    inputList.Add(int.Parse(numStr.ToCharArray()[i].ToString()));
                }

                aCount = 0;
                bCount = 0;
                for (int i = 0; i < resList.Count; i++)
                {
                    if (resList[i] == inputList[i])
                        aCount++;
                    if (inputList.Contains(resList[i]))
                        bCount++;
                }
                bCount = bCount - aCount;
                Console.WriteLine(aCount + "A" + bCount + "B");
                Console.WriteLine();
            }

            Console.WriteLine("---------------");
            Console.WriteLine("     Win!");
            Console.WriteLine("   Times:" + timeCount);
            Console.WriteLine("---------------");
            Console.ReadKey();
        }

        static List<int> CreatRes() {
            List<int> resList = new List<int>();

            while (resList.Count < 4) {
                Random ra = new Random();
                int rNum = ra.Next(0, 10);
                if (!resList.Contains(rNum))
                    resList.Add(rNum);
            }

            return resList;
        }
    }
}