advent-of-code/2022
1
0
Fork 0
mirror of https://github.com/parnic/advent-of-code-2022.git synced 2025-06-16 21:41:53 -05:00
Code Issues Packages Projects Releases Wiki Activity

Minor restructure, .net update, add utilities

Browse Source
This commit is contained in:
Chris Pickett
2022-12-08 22:59:46 -06:00
parent 87ad248b3a
commit f9e75ffcad
16 changed files with 284 additions and 144 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
src/01.cs
View File

@ -7,7 +7,7 @@ internal class Day01 : Day
internal override void Parse()
{
List<int> calories = new();
foreach (var line in Util.ReadAllLines("01"))
foreach (var line in Util.Parsing.ReadAllLines("01"))
{
if (string.IsNullOrEmpty(line))
{

2
src/02.cs
View File

@ -6,7 +6,7 @@ internal class Day02 : Day
internal override void Parse()
{
lines = Util.ReadAllLines("02");
lines = Util.Parsing.ReadAllLines("02");
}
internal override string Part1()

2
src/03.cs
View File

@ -6,7 +6,7 @@ internal class Day03 : Day
internal override void Parse()
{
sacks = Util.ReadAllLines("03");
sacks = Util.Parsing.ReadAllLines("03");
}
static int GetPriority(char x) => x <= 'Z' ? x - 'A' + 27 : x - 'a' + 1;

2
src/04.cs
View File

@ -6,7 +6,7 @@ internal class Day04 : Day
internal override void Parse()
{
foreach (var line in Util.ReadAllLines("04"))
foreach (var line in Util.Parsing.ReadAllLines("04"))
{
var assignments = line.Split(',');
var firstAssignment = assignments[0].Split('-');

2
src/05.cs
View File

@ -17,7 +17,7 @@ internal class Day05 : Day
internal override void Parse()
{
int state = 0;
foreach (var line in Util.ReadAllLines("05"))
foreach (var line in Util.Parsing.ReadAllLines("05"))
{
if (state == 0)
{

2
src/06.cs
View File

@ -6,7 +6,7 @@ internal class Day06 : Day
internal override void Parse()
{
buffer = Util.ReadAllText("06");
buffer = Util.Parsing.ReadAllText("06");
}
private static int FindDistinct(string buf, int distinctLen)

30
src/07.cs
View File

@ -2,7 +2,7 @@
internal class Day07 : Day
{
private class file
private class fileInfo
{
public long size;
// ReSharper disable once NotAccessedField.Local
@ -11,11 +11,11 @@ internal class Day07 : Day
public override string ToString() => $"{name}, {size:N0}b";
}
private class dir
private class dirInfo
{
public dir? outer;
public readonly List<dir> dirs = new();
public readonly List<file> files = new();
public dirInfo? outer;
public readonly List<dirInfo> dirs = new();
public readonly List<fileInfo> files = new();
public string name = string.Empty;
public long size => files.Sum(x => x.size) + dirs.Sum(x => x.size);
@ -23,13 +23,13 @@ internal class Day07 : Day
public override string ToString() => $"{name}, {size:N0}b, {dirs.Count} dir{(dirs.Count == 1 ? "" : "s")}, {files.Count} file{(files.Count == 1 ? "" : "s")}{(outer != null ? $", parent '{outer.name}'" : "")}";
}
private readonly dir rootDir = new() {name = "/"};
private readonly dirInfo rootDirInfo = new() {name = "/"};
internal override void Parse()
{
dir? curr = null;
dirInfo? curr = null;
foreach (var line in Util.ReadAllLines("07"))
foreach (var line in Util.Parsing.ReadAllLines("07"))
{
if (line.StartsWith("$"))
{
@ -45,7 +45,7 @@ internal class Day07 : Day
{
if (arg == "/")
{
curr = rootDir;
curr = rootDirInfo;
}
else if (arg == "..")
{
@ -62,17 +62,17 @@ internal class Day07 : Day
var parts = line.Split(' ');
if (parts[0] == "dir")
{
curr!.dirs.Add(new dir() { name = parts[1], outer = curr });
curr!.dirs.Add(new dirInfo() { name = parts[1], outer = curr });
}
else
{
curr!.files.Add(new file { size = long.Parse(parts[0]), name = parts[1] });
curr!.files.Add(new fileInfo { size = long.Parse(parts[0]), name = parts[1] });
}
}
}
}
private static IEnumerable<dir> GetCandidates(dir root, long? threshold = null)
private static IEnumerable<dirInfo> GetCandidates(dirInfo root, long? threshold = null)
{
if (threshold == null || root.size <= threshold)
{
@ -95,15 +95,15 @@ internal class Day07 : Day
internal override string Part1()
{
List<dir> candidates = new(GetCandidates(rootDir, 100000));
List<dirInfo> candidates = new(GetCandidates(rootDirInfo, 100000));
return $"Sum of directories below 100,000 bytes: <+white>{candidates.Sum(x => x.size)}";
}
internal override string Part2()
{
List<dir> flatDirList = new(GetCandidates(rootDir));
var rootSize = rootDir.size;
List<dirInfo> flatDirList = new(GetCandidates(rootDirInfo));
var rootSize = rootDirInfo.size;
const int totalSize = 70000000;
var currentFreeSpace = totalSize - rootSize;
const int totalNeededFreeSpace = 30000000;

2
src/08.cs
View File

@ -6,7 +6,7 @@ internal class Day08 : Day
internal override void Parse()
{
var lines = new List<string>(Util.ReadAllLines("08"));
var lines = new List<string>(Util.Parsing.ReadAllLines("08"));
trees = new int[lines.Count][];
for (int i = 0; i < lines.Count; i++)
{

4
src/Template.cs
View File

@ -3,11 +3,9 @@ namespace aoc2022;
internal class DayTemplate : Day
{
IEnumerable<string>? lines;
internal override void Parse()
{
lines = Util.ReadAllLines("##");
var lines = Util.Parsing.ReadAllLines("##");
}
internal override string Part1()

119
src/Util.cs
View File

@ -1,118 +1 @@
using System.Diagnostics;
using System.Reflection;
using System.Text;
namespace aoc2022;
internal static class Util
{
private static readonly char[] StripPreamble = { (char)8745, (char)9559, (char)9488, };
private static readonly Encoding[] StripBOMsFromEncodings = { Encoding.UTF8, Encoding.Unicode, Encoding.BigEndianUnicode, };
private static void ReadData(string inputName, Action<string> processor)
{
if (Console.IsInputRedirected)
{
bool processedSomething = false;
for (int i = 0; Console.In.ReadLine() is { } line; i++)
{
if (i == 0)
{
if (line[0..StripPreamble.Length].SequenceEqual(StripPreamble))
{
line = line[StripPreamble.Length..];
}
else
{
foreach (var encoding in StripBOMsFromEncodings)
{
if (line.StartsWith(encoding.GetString(encoding.GetPreamble()), StringComparison.Ordinal))
{
line = line.Replace(encoding.GetString(encoding.GetPreamble()), "", StringComparison.Ordinal);
}
}
}
}
processor(line);
if (!string.IsNullOrEmpty(line))
{
processedSomething = true;
}
}
if (processedSomething)
{
return;
}
}
var filename = $"inputs/{inputName}.txt";
if (File.Exists(filename))
{
foreach (var line in File.ReadLines(filename))
{
processor(line);
}
return;
}
// typeof(Util) is not technically correct since what we need is the "default namespace,"
// but "default namespace" is a Project File concept, not a C#/.NET concept, so it's not
// accessible at runtime. instead, we assume Util is also part of the "default namespace"
var resourceName = $"{typeof(Util).Namespace}.inputs.{inputName}.txt";
using var stream = Assembly.GetExecutingAssembly().GetManifestResourceStream(resourceName);
using StreamReader reader = new(stream!);
while (reader.ReadLine() is { } readLine)
{
processor(readLine);
}
}
internal static string ReadAllText(string filename)
{
string contents = string.Empty;
ReadData(filename, (line) => contents = line);
return contents;
}
internal static IEnumerable<string> ReadAllLines(string filename)
{
List<string> lines = new();
ReadData(filename, (line) => lines.Add(line));
return lines;
}
internal static IEnumerable<long> ReadAllLinesAsInts(string filename)
{
return ReadAllLines(filename).Select(long.Parse);
}
internal static void StartTestSet(string name)
{
Logger.Log($"<underline>test: {name}<r>");
}
internal static void StartTest(string label)
{
Logger.Log($"<magenta>{label}<r>");
}
internal static void TestCondition(Func<bool> a, bool printResult = true)
{
if (a.Invoke() == false)
{
Debug.Assert(false);
if (printResult)
{
Logger.Log("<red>x<r>");
}
}
else
{
if (printResult)
{
Logger.Log("<green>✓<r>");
}
}
}
}


51
src/Util/Bisect.cs Normal file
View File

@ -0,0 +1,51 @@
using System.Numerics;
namespace aoc2022.Util;
public static class Bisect
{
// Bisect takes a known-good low and known-bad high value as the bounds
// to bisect, and a function to test each value for success or failure.
// If the function succeeds, the value is adjusted toward the maximum,
// and if the function fails, the value is adjusted toward the minimum.
// The final value is returned when the difference between the success
// and the failure is less than or equal to the acceptance threshold
// (usually 1, for integers).
public static double Find(double low, double high, double threshold, Func<double, bool> tryFunc)
{
while (System.Math.Abs(high - low) > threshold)
{
var currVal = low + ((high - low) / 2);
var success = tryFunc(currVal);
if (success)
{
low = currVal;
}
else
{
high = currVal;
}
}
return low;
}
public static double Find(long low, long high, long threshold, Func<long, bool> tryFunc)
{
while (System.Math.Abs(high - low) > threshold)
{
var currVal = low + ((high - low) / 2);
var success = tryFunc(currVal);
if (success)
{
low = currVal;
}
else
{
high = currVal;
}
}
return low;
}
}

38
src/Util/Combinatorics.cs Normal file
View File

@ -0,0 +1,38 @@
namespace aoc2022.Util;
public static class Combinatorics
{
public static IEnumerable<IEnumerable<T>> GetPermutations<T>(IList<T> list)
{
Action<IList<T>, int>? helper = null;
List<IEnumerable<T>> res = new();
helper = (arr, n) =>
{
if (n == 1)
{
var tmp = new T[arr.Count];
arr.CopyTo(tmp, 0);
res.Add(tmp);
}
else
{
for (var i = 0; i < n; i++)
{
helper!(arr, n - 1);
if (n % 2 == 1)
{
(arr[i], arr[n - 1]) = (arr[n - 1], arr[i]);
}
else
{
(arr[0], arr[n - 1]) = (arr[n - 1], arr[0]);
}
}
}
};
helper(list, list.Count);
return res;
}
}

46
src/Util/Math.cs Normal file
View File

@ -0,0 +1,46 @@
using System.Numerics;
namespace aoc2022.Util;
public static class Math
{
public static ulong GCD(ulong a, ulong b)
{
while (true)
{
if (b == 0)
{
return a;
}
var a1 = a;
a = b;
b = a1 % b;
}
}
public static ulong LCM(params ulong[] nums)
{
var num = nums.Length;
switch (num)
{
case 0:
return 0;
case 1:
return nums[0];
}
var ret = lcm(nums[0], nums[1]);
for (var i = 2; i < num; i++)
{
ret = lcm(nums[i], ret);
}
return ret;
}
private static ulong lcm(ulong a, ulong b)
{
return (a * b) / GCD(a, b);
}
}

88
src/Util/Parsing.cs Normal file
View File

@ -0,0 +1,88 @@
using System.Reflection;
using System.Text;
namespace aoc2022.Util;
public static class Parsing
{
private static readonly char[] StripPreamble = { (char)8745, (char)9559, (char)9488, };
private static readonly Encoding[] StripBOMsFromEncodings = { Encoding.UTF8, Encoding.Unicode, Encoding.BigEndianUnicode, };
private static void ReadData(string inputName, Action<string> processor)
{
if (Console.IsInputRedirected)
{
bool processedSomething = false;
for (int i = 0; Console.In.ReadLine() is { } line; i++)
{
if (i == 0)
{
if (line[0..StripPreamble.Length].SequenceEqual(StripPreamble))
{
line = line[StripPreamble.Length..];
}
else
{
foreach (var encoding in StripBOMsFromEncodings)
{
if (line.StartsWith(encoding.GetString(encoding.GetPreamble()), StringComparison.Ordinal))
{
line = line.Replace(encoding.GetString(encoding.GetPreamble()), "", StringComparison.Ordinal);
}
}
}
}
processor(line);
if (!string.IsNullOrEmpty(line))
{
processedSomething = true;
}
}
if (processedSomething)
{
return;
}
}
var filename = $"inputs/{inputName}.txt";
if (File.Exists(filename))
{
foreach (var line in File.ReadLines(filename))
{
processor(line);
}
return;
}
// typeof(Logger) is not technically correct since what we need is the "default namespace,"
// but "default namespace" is a Project File concept, not a C#/.NET concept, so it's not
// accessible at runtime. instead, we assume Logger is also part of the "default namespace"
var resourceName = $"{typeof(Logger).Namespace}.inputs.{inputName}.txt";
using var stream = Assembly.GetExecutingAssembly().GetManifestResourceStream(resourceName);
using StreamReader reader = new(stream!);
while (reader.ReadLine() is { } readLine)
{
processor(readLine);
}
}
internal static string ReadAllText(string filename)
{
string contents = string.Empty;
ReadData(filename, (line) => contents = line);
return contents;
}
internal static IEnumerable<string> ReadAllLines(string filename)
{
List<string> lines = new();
ReadData(filename, (line) => lines.Add(line));
return lines;
}
internal static IEnumerable<long> ReadAllLinesAsInts(string filename)
{
return ReadAllLines(filename).Select(long.Parse);
}
}

35
src/Util/Testing.cs Normal file
View File

@ -0,0 +1,35 @@
using System.Diagnostics;
namespace aoc2022.Util;
public static class Testing
{
internal static void StartTestSet(string name)
{
Logger.Log($"<underline>test: {name}<r>");
}
internal static void StartTest(string label)
{
Logger.Log($"<magenta>{label}<r>");
}
internal static void TestCondition(Func<bool> a, bool printResult = true)
{
if (a.Invoke() == false)
{
Debug.Assert(false);
if (printResult)
{
Logger.Log("<red>x<r>");
}
}
else
{
if (printResult)
{
Logger.Log("<green>✓<r>");
}
}
}
}