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

namespace BuggyCode
{
    public class Program
    {
	static void Main(string[] args)
        {
            // We are adding the last 5 days traded volumes for each stock...

            AddStock("ONGC", new int[] { 125504, 227808, 418706, 518706, 618706 });
            AddStock("ICICI", new int[] { 642675, 505563, 655457, 555457, 645457 });
            AddStock("TCS", new int[] { 314534, 416543, 213766, 313766, 237667 });
            AddStock("HDFC", new int[] { 161907, 262122, 359839, 459839, 379839 });

            System.Console.WriteLine("Displaying the difference in daily volume for each stock...\n");
            DisplayDifference("ONGC");
            DisplayDifference("TCS");
            DisplayDifference("HDFC");
            DisplayDifference("ICICI");

           System.Console.WriteLine("\nMost traded stock : " + MostTradedStock());
        }
	
        private static Dictionary<string, List<int>> stockVolume = new Dictionary<string, List<int>>();

        // Level 1
        static void AddStock(string stock, int[] dailyVol)
        {
            // Write the logic here...
        }







        // Level 2
        static List<double> DailyVolumeDifference(string code)
        {
            // Fix the bug here..

            List<double> perDifference = new List<double>();

            List<int> l = stockVolume[code];

            double prev = 0;

            double curr = 0;

            for (int i = 0; i < l.Count - 1; ++i)
            {
                prev = l[i];
                curr = l[i + 1];

                double difference = curr - prev;

                perDifference.Add(difference);
            }

            return perDifference;
        }











        // Level 3
        static String MostTradedStock()
        {
            String code = "";

            // Write the logic here...

            return code;
        }

        public static void DisplayDifference(string stock)
        {
            if (stockVolume.Count == 0) return;

            List<double> volDifference = DailyVolumeDifference(stock);
            System.Console.WriteLine("Difference in volume for " + stock);


            foreach (var d in volDifference)
            {
                System.Console.Write($"{d}\t");
            }
            System.Console.WriteLine();
        }


    }

}