AdventOfCode23/Day14/BoulderMap.cs

namespace Day14;

public class BoulderMap
{
    private readonly char[][] _lines;

    public BoulderMap(IList<string> lines)
    {
        _lines = lines.Select(l => l.ToCharArray()).ToArray();
    }

    public int CalculateMaxNorthLoad()
    {
        var load = 0;
        for (var x = 0; x < _lines[0].Length; x++)
        {
            var freeY = 0;
            for (var y = 0; y < _lines.Length; y++)
            {
                switch (_lines[y][x])
                {
                    case 'O':
                        if (y != freeY)
                        {
                            _lines[y][x] = _lines[freeY][x];
                            _lines[freeY][x] = 'O';
                        }
                        load += _lines.Length - freeY;
                        freeY++;
                        break;
                    case '#':
                        freeY = y + 1;
                        break;
                }
            }
        }

        foreach (var l in _lines)
        {
            Console.WriteLine(l);
        }

        return load;
    }
}