Day 05

var data = @"
    [D]
[N] [C]
[Z] [M] [P]
 1   2   3

move 1 from 2 to 1
move 3 from 1 to 3
move 2 from 2 to 1
move 1 from 1 to 2"
.Split('\n').Skip(1).ToArray();


data = File.ReadAllLines(@"F:\input.txt");


var stackCount = int.Parse(data.SkipWhile(z => z.Trim()[0] == '[').First().Trim().Split(' ').Last());

var stacks = Enumerable.Range(0, stackCount).Select(z=> new Stack<char>()).ToArray();


foreach (var line in data.TakeWhile(z => z.Trim()[0] == '[').Reverse())
{
    for(int i = 0; i + 2 < line.Length; i += 4)
    {
        var c = line[i + 1];
        if(char.IsLetter(c))
            stacks[i / 4].Push(c);
    }
}

stacks.Dump();

var moves = data.SkipWhile(z => string.IsNullOrWhiteSpace(z) == false).Skip(1);

var q = new Stack<char>();

bool p1 = false;

foreach (var line in moves)
{
    line.Dump();
    var split = line.Split(' ');
    var amount = int.Parse(split[1]);
    var from = int.Parse(split[3]) - 1;
    var to = int.Parse(split[5]) - 1;


    while(amount-- > 0)
    {
        var c = stacks[from].Pop();
        if(p1)
            stacks[to].Push(c);
        else
            q.Push(c);
    }

    while(p1 == false && q.Any())
        stacks[to].Push(q.Pop());

    //stacks.Dump(line);
}


new string(stacks.Select(z => z.Pop()).ToArray()).Dump();