using System;

using System.Collections.Generic;   

using System.Linq;

​

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        Console.WriteLine(PhoneDir.Phone("", "48-421-674-8977"));

    }

}

​

​

public class PhoneDir 

{

    public static string Phone(string strng, string num)

    {

        strng = "/+1-541-754-3010 156 Alphand_St. <J Steeve>\n 133, Green, Rd. <E Kustur> NY-56423 ;+1-541-914-3010\n"

    + "+1-541-984-3012 <P Reed> /PO Box 530; Pollocksville, NC-28573\n :+1-321-512-2222 <Paul Dive> Sequoia Alley PQ-67209\n"

    + "+1-741-984-3090 <Peter Reedgrave> _Chicago\n :+1-921-333-2222 <Anna Stevens> Haramburu_Street AA-67209\n"

    + "+1-111-544-8973 <Peter Pan> LA\n +1-921-512-2222 <Wilfrid Stevens> Wild Street AA-67209\n"

    + "<Peter Gone> LA ?+1-121-544-8974 \n <R Steell> Quora Street AB-47209 +1-481-512-2222\n"

    + "<Arthur Clarke> San Antonio $+1-121-504-8974 TT-45120\n <Ray Chandler> Teliman Pk. !+1-681-512-2222! AB-47209,\n"

    + "<Sophia Loren> +1-421-674-8974 Bern TP-46017\n <Peter O'Brien> High Street +1-908-512-2222; CC-47209\n"

    + "<Anastasia> +48-421-674-8974 Via Quirinal Roma\n <P Salinger> Main Street, +1-098-512-2222, Denver\n"

    + "<C Powel> *+19-421-674-8974 Chateau des Fosses Strasbourg F-68000\n <Bernard Deltheil> +1-498-512-2222; Mount Av.  Eldorado\n"

    + "+1-099-500-8000 <Peter Crush> Labrador Bd.\n +1-931-512-4855 <William Saurin> Bison Street CQ-23071\n"

    + "<P Salinge> Main Street, +1-098-512-2222, Denve\n"+ "<P Salinge> Main Street, +1-098-512-2222, Denve\n";

        var values = strng.Split('\n');

        var matches = values.ToList().Where(item => item.Contains(num));

        Console.WriteLine(matches.Count());

        Console.WriteLine(values.Length);

        return "test";

    }

}

​

​