using System;

using System.Linq;

using System.Text.RegularExpressions;

​

namespace CodeInterview3

{

    /*

     * 

     * Step 1: Describes what the program does as a whole.

     * Step 2: How would you improve it?

     * Step 3: How would you give feedback to someone with more experience than you?

     * 

     */

    public class Program

    {

        private static int m2(string p2)

        {

            var a = new int[p2.Length];

            int i = 0;

            foreach (char c in p2)

            {

                a[i] = int.Parse(c + "");

                i++;

            }

​

            int d = 0;

            foreach (int b in a)

            {

                d = d + b;

            }

​

            return d;

        }

​

        private static int m1(string p1)

        {

            string a = "";

            foreach (char c in p1)

            {

                switch (c)

                {

                    case '0':

                    case '1':

                    case '2':

                    case '3':

                    case '4':

                    case '5':

                    case '6':

                    case '7':

                    case '8':

                    case '9':

                        a = a + c;

                        break;

                    default:

                        break;

                }

            }

​

            return m2(a);

        }

​

        public static void Main(string[] args)

        {

            Console.WriteLine(m1("123") == 6);

            Console.WriteLine(m1("%1a2c3/") == 6);

        }

    }

}