AdventOfCode23/Day9/Program.cs

using System.Diagnostics;

using Day9;

if (args.Any(a => a == "--debug"))
{
    Console.WriteLine("DEBUG");
    Console.WriteLine(Debugger.Launch());
}

if (args.Length < 1)
{
    Console.WriteLine("Requires 1 args: inputFileName");
    return -1;
}

var inputFile = args[0];
var parser = new Parser();
var sequences = parser.Parse(inputFile).ToList();
var sum = 0L;

foreach (var s in sequences)
{
    var pyramid = new Pyramid(s);
    var next = pyramid.Predict();
    Console.WriteLine(next);
    sum += next;
}

Console.WriteLine();
Console.WriteLine($"Total: {sum}");

Console.WriteLine();
sum = 0;
foreach (var s in sequences)
{
    var pyramid = new Pyramid(s);
    var prev = pyramid.Retrodict();
    Console.WriteLine(prev);
    sum += prev;
}

Console.WriteLine();
Console.WriteLine($"Total: {sum}");

return 0;