Reverse text from a file

Create a C# program that makes a copy of a text file but reverse all its content. Create a file with the same name but with extension "inv".

Input

Output

Solution

using System.IO;
public class ReverseTextFile
{
    public static void Main(string[] args)
    {
        string inputFileName = "input.txt";
        string outputFileName = "input.inv";

        string[] lines = File.ReadAllLines(inputFileName);

        using (StreamWriter writer = File.CreateText(outputFileName))
        {
            for (int i = lines.Length - 1; i >= 0; i--)
            {
                writer.WriteLine(lines[i]);
            }
        }
    }
}