C#의 컬렉션

var h = new HashSet<string>(arr1);

string[] arr2 = h.ToArray();

using System;
using System.Collections.Generic;
using System.Linq;

class Program {
   static void Main() {
      string[] arr1 = {"Table","Chair","Pen","Clip","Table"};
      Console.WriteLine(string.Join(",", arr1));

      // HashSet
      var h = new HashSet<string>(arr1);

      // eliminates duplicate words
      string[] arr2 = h.ToArray();
      Console.WriteLine(string.Join(",", arr2));
   }
}