C# program to remove all duplicates words from a given sentence

Set a string with duplicate words.

string str = "One Two Three One";

Above, you can see the word “One” comes twice.

To remove dulicate words, you can try to run the following code in C# −

Example

 Live Demo

using System;
using System.Linq;
public class Program {
   public static void Main() {
      string str = "One Two Three One";
      string[] arr = str.Split(' ');
      Console.WriteLine(str);
      var a =
      from k in arr
      orderby k
      select k;
      Console.WriteLine("After removing duplicate words...");
      foreach(string res in a.Distinct()) {
         Console.Write(" " + res.ToLower());
      }
      Console.ReadLine();
   }
}

Output

One Two Three One
After removing duplicate words...
one three two