Removing duplicate characters from an array

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

 

namespace ConsoleApplication1

{

    class Program

    {

        static void Main(string[] args)

        {

           //Removing duplicate characters from the array

            string str = "bbbbbbbbbbbbcccccccccccssssssssssss";

            for (int i = 0; i < str.Length; i++)

            {

                for (int j = i + 1; j < str.Length; j++)

                {

                    if (str[i] == str[j])

                    {

                        str = str.Remove(j, 1);

                        j–;

                    }

                }

            }

            Console.WriteLine(str);

        }

    }

}

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