string_ex_06_replacing_repeating_characters

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Text.RegularExpressions;

namespace _06_replace_repeating_characters//100/100
{
    class Program
    {
        static void Main(string[] args)
        {
            string input = Console.ReadLine();

            var prevChar = '\0';
            StringBuilder sb = new StringBuilder();
            foreach (char chr in input)
            {
                if (chr != prevChar)
                {
                    sb.Append(chr);
                    prevChar = chr;
                }
            }
            Console.WriteLine(sb);
        }
     }
}