using System; using System.Text; using System.Collections.Generic; using System.Linq; public class Program { public static void Main() { var dictionary = new string[] { "chill", "wind", "snow", "cold" }; var src = new string[] { "abcdc", "fgwio", "chill", "pqnsd", "uvdxy" }; var result = Find(dictionary, src); Console.WriteLine(string.Join(",", result)); } private static object Find(string[] dictionary, string[] src) { throw new NotImplementedException(); } }