Task372

namespace KrushkovTask372
{
    internal class Program
    {
        static void Main(string[] args)
        {
            string[] cities = new string[5];
            InputCities(cities);

            string[] filtered = new string[5];
            filtered = FilterBySubstring(cities, "град");
            foreach (string s in filtered)
            {
                Console.WriteLine(s);
            }
        }

        static void InputCities(string[] cities)
        {
            for (int i = 0; i < cities.Length; i++)
            {
                Console.Write("Please enter city[{0}]: ", i);
                cities[i] = Console.ReadLine();
            }
        }

        static string[] FilterBySubstring(string[] cities, string substring)
        {
            string[] filtered = new string[cities.Length];
            for (int i = 0; i < cities.Length; i++)
            {
                if (cities[i].Contains(substring))
                {
                    filtered[i] = cities[i];
                }
            }
            return filtered;
        }
    }
}