ben
/
aoc
1
0
Fork 0
Code Pull Requests Activity

tidy 2020 day 4 using a dict
continuous-integration/drone/push Build is passing Details

This commit is contained in:
Ben Harris 2022-12-13 14:58:51 -05:00
parent 8006ba69bd
commit 3479122a05
2 changed files with 71 additions and 161 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
AOC2020/AOC2020.csproj
View File

@ -26,4 +26,8 @@
<ProjectReference Include="..\AOC.Common\AOC.Common.csproj" />
</ItemGroup>
<ItemGroup>
<PackageReference Include="morelinq" Version="3.3.2" />
</ItemGroup>
</Project>

228
AOC2020/Day04.cs
View File

@ -1,3 +1,5 @@
using MoreLinq;
namespace AOC2020;
/// <summary>
@ -5,176 +7,80 @@ namespace AOC2020;
/// </summary>
public sealed partial class Day04 : Day
{
private List<Passport>? _passports;
private List<Dictionary<string, string>>? _passports;
public Day04() : base(2020, 4, "Passport Processing")
{
}
public override void ProcessInput()
public override void ProcessInput() =>
_passports = Input.Split("").Select(Parse).ToList();
[GeneratedRegex("#[0-9a-f]{6}")]
private static partial Regex HexColor();
private static Dictionary<string, string> Parse(IEnumerable<string> list) =>
string.Join(' ', list).Split(' ', StringSplitOptions.TrimEntries)
.ToDictionary(k => k.Split(':', 2)[0], v => v.Split(':', 2)[1]);
private static bool IsValid(Dictionary<string, string> d) =>
new[] { "byr", "iyr", "eyr", "hgt", "hcl", "ecl", "pid" }.All(d.ContainsKey);
private static bool ExtendedValidation(Dictionary<string, string> d)
{
_passports = new();
if (!IsValid(d)) return false;
var a = new List<string>();
foreach (var line in Input)
// birth year
if (int.TryParse(d["byr"], out var byr))
{
if (line == "")
{
_passports.Add(Passport.Parse(a));
a.Clear();
continue;
}
a.Add(line);
if (byr is < 1920 or > 2002) return false;
}
else return false;
if (a.Any()) _passports.Add(Passport.Parse(a));
// issuance year
if (int.TryParse(d["iyr"], out var iyr))
{
if (iyr is < 2010 or > 2020) return false;
}
else return false;
// expiration year
if (int.TryParse(d["eyr"], out var eyr))
{
if (eyr is < 2020 or > 2030) return false;
}
else return false;
// height
if (d["hgt"].EndsWith("cm"))
{
if (int.TryParse(d["hgt"][..3], out var hgt))
{
if (hgt is < 150 or > 193) return false;
}
else return false;
}
else if (d["hgt"].EndsWith("in"))
{
if (int.TryParse(d["hgt"][..2], out var hgt))
{
if (hgt is < 59 or > 76) return false;
}
else return false;
}
else return false;
// hair color
if (!HexColor().IsMatch(d["hcl"])) return false;
// eye color
if (!new[] { "amb", "blu", "brn", "gry", "grn", "hzl", "oth" }.Contains(d["ecl"]))
return false;
// passport id
return !d.ContainsKey("pid") || d["pid"].Length == 9;
}
public override object Part1() => _passports!.Count(p => p.IsValid);
public override object Part2() => _passports!.Count(p => p.ExtendedValidation());
private partial class Passport
{
private string? _byr;
private string? _cid;
private string? _ecl;
private string? _eyr;
private string? _hcl;
private string? _hgt;
private string? _iyr;
private string? _pid;
public bool IsValid =>
_byr != null &&
_iyr != null &&
_eyr != null &&
_hgt != null &&
_hcl != null &&
_ecl != null &&
_pid != null;
public bool ExtendedValidation()
{
if (!IsValid) return false;
// birth year
if (int.TryParse(_byr, out var byr))
{
if (byr is < 1920 or > 2002)
return false;
}
else
{
return false;
}
// issuance year
if (int.TryParse(_iyr, out var iyr))
{
if (iyr is < 2010 or > 2020)
return false;
}
else
{
return false;
}
// expiration year
if (int.TryParse(_eyr, out var eyr))
{
if (eyr is < 2020 or > 2030)
return false;
}
else
{
return false;
}
// height
if (_hgt!.EndsWith("cm"))
{
var h = _hgt[..3];
if (int.TryParse(h, out var hgt))
{
if (hgt is < 150 or > 193)
return false;
}
else
{
return false;
}
}
else if (_hgt.EndsWith("in"))
{
var h = _hgt[..2];
if (int.TryParse(h, out var hgt))
{
if (hgt is < 59 or > 76)
return false;
}
else
{
return false;
}
}
else
{
return false;
}
// hair color
if (!HexColor().IsMatch(_hcl!))
return false;
// eye color
if (!new[] { "amb", "blu", "brn", "gry", "grn", "hzl", "oth" }.Contains(_ecl))
return false;
// passport id
return _pid == null || _pid.Length == 9;
}
public static Passport Parse(IEnumerable<string> list)
{
var passport = new Passport();
foreach (var entry in string.Join(' ', list).Split(' ', StringSplitOptions.TrimEntries))
{
var spl = entry.Split(':', 2);
switch (spl[0])
{
case "byr":
passport._byr = spl[1];
break;
case "iyr":
passport._iyr = spl[1];
break;
case "eyr":
passport._eyr = spl[1];
break;
case "hgt":
passport._hgt = spl[1];
break;
case "hcl":
passport._hcl = spl[1];
break;
case "ecl":
passport._ecl = spl[1];
break;
case "pid":
passport._pid = spl[1];
break;
case "cid":
passport._cid = spl[1];
break;
}
}
return passport;
}
[GeneratedRegex("#[0-9a-f]{6}")]
private static partial Regex HexColor();
}
}
public override object Part1() => _passports!.Count(IsValid);
public override object Part2() => _passports!.Count(ExtendedValidation);
}