using System;

public class Program

{

    public static void Main()

    {

        int[] r =new int[500];

        int t=0;

        string arr = "if you injoy on you'r life it 1 2 is good to be 5 kindly 4 w 6 i th 7 , 9 you'r post office 10 , it is 13 ";

        for(int i=0; i<arr.Length;i++)

        {           

            if(isNumber(arr[i]))

            {

                char val= Convert.ToChar (arr[i]);

                r[t]=val;

                t++;

            }

        }

        foreach(var item in r)

        {

            Console.WriteLine((char)item);

        }

        for(int i=0;i<=arr.Length;i++)

        {

            if(arr[i]>arr[i+1])

            {

                int temp

    }

    static bool isNumber(char val)

    {

         try

         {

            int x=  int.Parse(val.ToString());

            return true;

         }

         catch

         {

             return false;

         }

    }

    }