public BoardingPass ParseBoardingPassString(string input)
{
// Splits the Input string at the RowCount.
char[] Chars;
Chars = input.Substring(0, RowCount - 1).ToCharArray();
UInt32 Row = this.BoardingPassValueToInt(Chars, 'B');
Chars = input.Substring(RowCount - 1).ToCharArray();
UInt32 Colum = this.BoardingPassValueToInt(Chars, 'R');
BoardingPass retVal = new BoardingPass(Row, Colum);
return(retVal);
}
public static BoardingPass Parse(string input)
{
if (input.Length != 10)
{
throw new ArgumentException("10 Characters expected");
}
string rowInput = input.Substring(0, 7);
string seatInput = input.Substring(7, 3);
BoardingPass pass = new BoardingPass();
pass.Seat = CalculateSeat(seatInput);
pass.Row = CalculateRow(rowInput);
return(pass);
}
/// <summary>
/// Seat ID = RowNum * 8 + ColNum
///
/// The seat ID will be sequential, meaning the next seatId is the previous seatId + 1. Just need
/// to sort and find the empty seat! This would be easily solved without loops if seats weren't missing.
/// </summary>
static void Part2(IEnumerable <BoardingPass> boardingPasses)
{
var sortedBoardingPasses = boardingPasses.OrderBy(x => x.SeatId).ToArray();
for (var i = 0; i < sortedBoardingPasses.Count() - 1; i++)
{
var currentBoardingPass = sortedBoardingPasses[i];
var nextBoardingPass = sortedBoardingPasses[i + 1];
if (nextBoardingPass.SeatId - currentBoardingPass.SeatId != 1)
{
var myBoardingPassColumn = currentBoardingPass.Column == 8 ? 0 : currentBoardingPass.Column + 1;
var myBoardingPassRow = currentBoardingPass.Column == 8 ? nextBoardingPass.Row : currentBoardingPass.Row;
var myBoardingPass = new BoardingPass(myBoardingPassRow, myBoardingPassColumn);
Console.WriteLine($"BoardingPassId: {myBoardingPass.SeatId}, Row: {myBoardingPass.Row}, Column: {myBoardingPass.Column}");
}
}
}
static void Main(string[] args)
{
var inputList = (args.Count() > 0) ? InputLoader.GetInputAsList(args[0]) : InputLoader.GetInputAsList("input.txt");
var boardingPasses = inputList.Select(anon => BoardingPass.ParseInput(anon)).ToList();
var highestID = boardingPasses.Max(anon => anon.SeatID);
Console.WriteLine($"The highest seat ID (part 1): {highestID}");
var emptySeats = new List <BoardingPass>();
for (var i = 0; i < 128; i++)
{
for (var j = 0; j < 8; j++)
{
var doesExistInPasses = boardingPasses
.Where(anon => anon.SeatID.Equals(i * 8 + j))
.Count();
if (doesExistInPasses == 0)
{
emptySeats.Add(new BoardingPass()
{
Row = i, Column = j
});
}
}
}
foreach (var mySeat in emptySeats)
{
var leftSeatExists = boardingPasses
.Where(anon => (mySeat.SeatID - 1).Equals(anon.SeatID))
.Count() != 0;
var rightSeatExists = boardingPasses
.Where(anon => (mySeat.SeatID + 1).Equals(anon.SeatID))
.Count() != 0;
if (leftSeatExists && rightSeatExists)
{
Console.WriteLine($"My seat is ID: {mySeat.SeatID}");
}
}
Console.ReadLine();
}
static void Main(string[] args)
{
string[] lines = System.IO.File.ReadAllLines(@"input.txt");
List <BoardingPass> allCombinations = new List <BoardingPass>();
for (int i = 0; i < 128; i++)
{
for (int j = 0; j < 8; j++)
{
allCombinations.Add(new BoardingPass()
{
Row = i,
Seat = j
});
}
}
int highestSeatId = 0;
List <BoardingPass> passes = new List <BoardingPass>();
foreach (string line in lines)
{
BoardingPass temp = BoardingPass.Parse(line);
if (temp.SeatId > highestSeatId)
{
highestSeatId = temp.SeatId;
}
passes.Add(temp);
allCombinations.RemoveAll(x => x.Row == temp.Row && x.Seat == temp.Seat);
}
Console.WriteLine("Highest SeatId : " + highestSeatId);
foreach (BoardingPass pass in allCombinations)
{
if (passes.Any(x => x.SeatId == pass.SeatId - 1) && passes.Any(x => x.SeatId == pass.SeatId + 1))
{
Console.WriteLine($"Row {pass.Row}, Seat {pass.Seat}, SeatId {pass.SeatId}");
}
}
}
