public object Part1(IParsedFile file)
{
file.NextLine();
file.NextLine();
file.NextLine();
var a = file.NextLine();
return(a);
}
public object Part1(IParsedFile file)
{
var height = file.Count;
var line = file.NextLine().ToSingleString();
var layout = new char[line.Length, height];
for (int y = 0; y < height; y++)
{
for (int x = 0; x < line.Length; x++)
{
layout[x, y] = line[x];
}
if (!file.Empty)
{
line = file.NextLine().ToSingleString();
}
}
bool changed = true;
while (changed)
{
changed = false;
var newLayout = (char[, ])layout.Clone();
for (int y = 0; y < layout.GetLength(1); y++)
{
for (int x = 0; x < layout.GetLength(0); x++)
{
if (layout[x, y] == '.')
{
continue;
}
var adjSeats = CountAdjacent(layout, '#', x, y);
if (layout[x, y] == 'L' && adjSeats == 0)
{
newLayout[x, y] = '#';
changed = true;
}
else if (layout[x, y] == '#' && adjSeats >= 4)
{
newLayout[x, y] = 'L';
changed = true;
}
}
}
layout = newLayout;
}
return(CountSeats(layout));
}
public object Part1(IParsedFile file)
{
// (bag, parent)
var parentPairing = new HashSet <(string bag, string parent)>();
while (!file.Empty)
{
var line = file.NextLine().ToSingleString();
var containIndex = line.IndexOf(" contain ", StringComparison.Ordinal);
var bag = line[..(containIndex - 1)];
private static IEnumerable <Operation> ParseBootloader(IParsedFile file)
{
while (!file.Empty)
{
var line = file.NextLine();
Op op = line.NextElement <string>() switch {
"acc" => Op.Acc,
"nop" => Op.Nop,
"jmp" => Op.Jmp,
_ => throw new Exception()
};
yield return(new Operation(op, line.NextElement <int>()));
}
}
public object Part2(IParsedFile file)
{
var valid = 0;
while (!file.Empty)
{
var line = file.NextLine();
var rule = line.NextElement <string>().Split('-').Select(int.Parse).ToArray();
var ch = line.NextElement <string>()[0];
var str = line.NextElement <string>();
if (rule.Count(x => ch == str[x - 1]) == 1)
{
valid++;
}
}
return(valid);
}
public object Part1(IParsedFile file)
{
var valid = 0;
while (!file.Empty)
{
var line = file.NextLine();
var minmax = line.NextElement <string>().Split('-').Select(int.Parse).ToArray();
var ch = line.NextElement <string>()[0];
var str = line.NextElement <string>();
var cnt = str.Count(x => x == ch);
if (cnt >= minmax[0] && cnt <= minmax[1])
{
valid++;
}
}
return(valid);
}
