C:\> Rostislav Persion's Projects

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 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.IO;
  
 namespace Backwards
 {
     class Program
     {
         
         static bool BothWays(string str)
         {
  
             string str1;
             string str2;
  
             bool val = true;
  
             for (int i = 0; (i < str.Length) & (val == true); i++)
             {
                 str1 = str.Substring(i,1);
                 str2 = str.Substring(str.Length - i - 1,1);
  
                 if (str1 != str2)
                 {
                     val = false;
                 }
             }
             return val;
         }
  
  
         static void Main(string[] args)
         {
             List<string> words = new List<string>();
  
             string line = "";
             StreamReader file = new StreamReader(@"C:\Users\Rostislav Persion\Desktop\words_dict.txt");
             while ((line = file.ReadLine()) != null)
             {
                 words.Add(line.Trim().ToLower());
             }
             file.Close();
             words.Sort();
  
  
  
             string result = "";
             Console.WriteLine("SEARCHING...");
             for (int a = 0; a < words.Count; a++)
             {
                 for (int b = 0; b < words.Count; b++)
                 {
                     if (BothWays(words[a] + words[b]) == true)
                     {
                         int percent = (int)(((double)a / (double)words.Count) * (double)100);
                         string str = "(" + percent + "%) " + words[a] + " " + words[b];
                         Console.WriteLine(str);
                         result += "(" + words[a] + " " + words[b] + ")";
                     }
                 }
             }
  
             File.WriteAllText(@"C:\Users\Rostislav Persion\Desktop\racecar.txt", result.ToString());
             Console.WriteLine("DONE.");
             
             Console.ReadLine();
         }
     }
 }