private static void Main(string[] args)
{
PrintHeader("Day 14");
var parallelQuery = Enumerable.Range(0, 128)
.AsParallel().AsOrdered()
.Select(i => $"{Input}-{i}")
.Select(s => Encoding.ASCII.GetBytes(s))
.Select(bs => KnotHashCalculator.Calculate(bs, KnotHashCalculator.MagicSuffix).CondenceKnotHash())
.ToList();
var answer1 = parallelQuery
.Select(CalculateOnes)
.Sum();
PrintAnswer("Problem 1 answer", answer1);
var onesMap = parallelQuery
.Select(ConvertToZeroOnes)
.Select(enumerable => enumerable.ToArray())
.ToArray();
var answer2 = CountIslands(onesMap);
PrintAnswer("Problem 2 answer", answer2);
}
private static void Main(string[] args)
{
PrintHeader("Day 10");
var input = Input.Split(",", StringSplitOptions.RemoveEmptyEntries).Select(byte.Parse).ToArray();
var hash1 = KnotHashCalculator.Calculate(input, roundsCount: 1);
PrintAnswer("Problem 1 answer", hash1[0] * hash1[1]);
var inputBytes = Encoding.ASCII.GetBytes(Input);
var hash2 = KnotHashCalculator.Calculate(inputBytes, KnotHashCalculator.MagicSuffix).CondenceKnotHash();
var hashStr = string.Join(string.Empty, hash2.Select(b => b.ToString("x2")));
PrintAnswer("Problem 2 answer", hashStr);
}
