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);









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