Excel Functions

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

public class Program
{
	public static void Main()
	{
	  	int rows = int.Parse(Console.ReadLine());

		string[][] jagged = new string[rows][];

		for(int row=0; row<rows; row++)
		{
			string[] currRow = Console.ReadLine().Split(new char[]{',',' '},StringSplitOptions.RemoveEmptyEntries);

			jagged[row] = currRow;
		}

		string[] commands = Console.ReadLine().Split();
		string action = commands[0];
		string header = commands[1];

		if(action == "hide")
		{
			int headerCol = -1;
			headerCol = Array.IndexOf(jagged[0],header);

			for(int row=0; row<rows; row++)
			{
				List<string> result = new List<string>();

				for(int col=0; col<jagged[row].Length; col++)
				{
					if(col!=headerCol)
					{
						result.Add(jagged[row][col]);
					}
				}
				Console.WriteLine(string.Join(" | ",result));
			}
		}
		else if (action == "sort")
		{
			int headerCol = -1;
			headerCol = Array.IndexOf(jagged[0],header);

			Console.WriteLine(string.Join(" | ",jagged[0]));

			foreach(var line in jagged.OrderBy(x=>x[headerCol]))
			{
				if(!line.Contains(header))
				{
					Console.WriteLine(string.Join(" | ",line));
				}
			}
		}
		else if (action == "filter")
		{
			string filterValue = commands[2];

			int headerCol = -1;
			headerCol = Array.IndexOf(jagged[0],header);

			Console.WriteLine(string.Join(" | ",jagged[0]));

			for(int row=0; row<rows; row++)
			{
				if(jagged[row][headerCol].Contains(filterValue))
				{
					Console.WriteLine(string.Join(" | ",jagged[row]));
				}
			}
		}
	}
}