Logica Handal Array.cs

//Rextester.Program.Main is the entry point for your code. Don't change it.
//Compiler version 4.0.30319.17929 for Microsoft (R) .NET Framework 4.5

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

namespace Rextester
{
    public class Program
    {
        public static void Main(string[] args)
        {
            //Your code goes here
            string[] column=new string[2];
            
            List<string> columns=new List<string>();
            columns.Add("QCC");
            columns.Add("QCC");
            columns.Add("QCC");
            columns.Add("SS");
            columns.Add("SS");
            columns.Add("SS");
            columns.Add("NSS");
            columns.Add("NSS");
            
            int start_merge=1;
            int end_merge=0;
            column[0]=columns[0];
            
            for(int i=0;i<columns.Count;i++){
                column[1]=columns[i];
                if(column[0]==column[1]){
                    end_merge++;
                }else{
                    column[0]=column[1];
                    Console.WriteLine("{2} - > {0} - {1}",start_merge,end_merge,columns[i-1]);
                    if(i!=0){
                      start_merge=end_merge+1;                        
                    }
                    end_merge=start_merge;
                }
            }
            Console.WriteLine("{2} - > {0} - {1}",start_merge,end_merge,column[0]);
            
            
            //Console.WriteLine("Hello, world! {0}",end_merge);
        }
    }
}