public void ChecksumIsCorrectForSamples()
{
var cc = new ChecksumComputer();
Assert.Equal("abxyz", cc.Compute("aaaaa-bbb-z-y-x"));
Assert.Equal("oarel", cc.Compute("not-a-real-room"));
}
public string Solve(string[] input)
{
var parser = new EntryParser();
var list = input.Select(parser.Parse);
var cc = new ChecksumComputer();
var realRooms = list.Where(r => r.DeclaredChecksum == cc.Compute(r.EncryptedName));
return(realRooms.Sum(r => r.SectorId).ToString());
}
public string Solve(string[] input)
{
var parser = new EntryParser();
var list = input.Select(parser.Parse);
var cc = new ChecksumComputer();
var realRooms = list.Where(r => r.DeclaredChecksum == cc.Compute(r.EncryptedName));
var shifter = new Shifter();
var decrypted = realRooms.Select(r => new { name = shifter.Shift(r.EncryptedName, r.SectorId), r.SectorId });
var northPole = decrypted.FirstOrDefault(x => x.name.Contains("northpole"));
return(northPole?.SectorId.ToString() ?? "Not found");
}
public void TiesAreBrokenAlphabetically()
{
var cc = new ChecksumComputer();
Assert.Equal("abcde", cc.Compute("a-b-c-d-e-f-g-h"));
}