Initial commit

This commit is contained in:
Brandon Scott 2018-12-22 12:50:18 -06:00
commit 8fd936789f
50 changed files with 10484 additions and 0 deletions

885
.gitignore vendored Normal file
View File

@ -0,0 +1,885 @@
# Created by https://www.gitignore.io/api/jetbrains,intellij+iml,eclipse,visualstudio,sublimetext,windows,macos,emacs,vim,linux,c,c++,cmake,python,csharp,java
### Vim ###
# swap
[._]*.s[a-w][a-z]
[._]s[a-w][a-z]
# session
Session.vim
# temporary
.netrwhist
*~
# auto-generated tag files
tags
### JetBrains ###
# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio and Webstorm
# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
# User-specific stuff:
.idea/workspace.xml
.idea/tasks.xml
# Sensitive or high-churn files:
.idea/dataSources/
.idea/dataSources.ids
.idea/dataSources.xml
.idea/dataSources.local.xml
.idea/sqlDataSources.xml
.idea/dynamic.xml
.idea/uiDesigner.xml
# Gradle:
.idea/gradle.xml
.idea/libraries
.gradle
# Mongo Explorer plugin:
.idea/mongoSettings.xml
## File-based project format:
*.iws
## Plugin-specific files:
# IntelliJ
/out/
# mpeltonen/sbt-idea plugin
.idea_modules/
# JIRA plugin
atlassian-ide-plugin.xml
# Crashlytics plugin (for Android Studio and IntelliJ)
com_crashlytics_export_strings.xml
crashlytics.properties
crashlytics-build.properties
fabric.properties
### JetBrains Patch ###
# Comment Reason: https://github.com/joeblau/gitignore.io/issues/186#issuecomment-215987721
# *.iml
# modules.xml
# .idea/misc.xml
# *.ipr
### Eclipse ###
.metadata
bin/
tmp/
*.tmp
*.bak
*.swp
*~.nib
local.properties
.settings/
.loadpath
.recommenders
# Eclipse Core
.project
# External tool builders
.externalToolBuilders/
# Locally stored "Eclipse launch configurations"
*.launch
# PyDev specific (Python IDE for Eclipse)
*.pydevproject
# CDT-specific (C/C++ Development Tooling)
.cproject
# JDT-specific (Eclipse Java Development Tools)
.classpath
# Java annotation processor (APT)
.factorypath
# PDT-specific (PHP Development Tools)
.buildpath
# sbteclipse plugin
.target
# Tern plugin
.tern-project
# TeXlipse plugin
.texlipse
# STS (Spring Tool Suite)
.springBeans
# Code Recommenders
.recommenders/
### Csharp ###
## Ignore Visual Studio temporary files, build results, and
## files generated by popular Visual Studio add-ons.
##
## Get latest from https://github.com/github/gitignore/blob/master/VisualStudio.gitignore
# User-specific files
*.suo
*.user
*.userosscache
*.sln.docstates
*.vcxproj.filters
# User-specific files (MonoDevelop/Xamarin Studio)
*.userprefs
# Build results
[Dd]ebug/
[Dd]ebugPublic/
[Rr]elease/
[Rr]eleases/
x64/
x86/
bld/
[Bb]in/
[Oo]bj/
[Ll]og/
# Visual Studio 2015 cache/options directory
.vs/
# Uncomment if you have tasks that create the project's static files in wwwroot
#wwwroot/
# MSTest test Results
[Tt]est[Rr]esult*/
[Bb]uild[Ll]og.*
# NUNIT
*.VisualState.xml
TestResult.xml
# Build Results of an ATL Project
[Dd]ebugPS/
[Rr]eleasePS/
dlldata.c
# .NET Core
project.lock.json
project.fragment.lock.json
artifacts/
**/Properties/launchSettings.json
*_i.c
*_p.c
*_i.h
*.ilk
*.meta
*.obj
*.pch
*.pdb
*.pgc
*.pgd
*.rsp
*.sbr
*.tlb
*.tli
*.tlh
*.tmp_proj
*.log
*.vspscc
*.vssscc
.builds
*.pidb
*.svclog
*.scc
# Chutzpah Test files
_Chutzpah*
# Visual C++ cache files
ipch/
*.aps
*.ncb
*.opendb
*.opensdf
*.sdf
*.cachefile
*.VC.db
*.VC.VC.opendb
# Visual Studio profiler
*.psess
*.vsp
*.vspx
*.sap
# TFS 2012 Local Workspace
$tf/
# Guidance Automation Toolkit
*.gpState
# ReSharper is a .NET coding add-in
_ReSharper*/
*.[Rr]e[Ss]harper
*.DotSettings.user
# JustCode is a .NET coding add-in
.JustCode
# TeamCity is a build add-in
_TeamCity*
# DotCover is a Code Coverage Tool
*.dotCover
# Visual Studio code coverage results
*.coverage
*.coveragexml
# NCrunch
_NCrunch_*
.*crunch*.local.xml
nCrunchTemp_*
# MightyMoose
*.mm.*
AutoTest.Net/
# Web workbench (sass)
.sass-cache/
# Installshield output folder
[Ee]xpress/
# DocProject is a documentation generator add-in
DocProject/buildhelp/
DocProject/Help/*.HxT
DocProject/Help/*.HxC
DocProject/Help/*.hhc
DocProject/Help/*.hhk
DocProject/Help/*.hhp
DocProject/Help/Html2
DocProject/Help/html
# Click-Once directory
publish/
# Publish Web Output
*.[Pp]ublish.xml
*.azurePubxml
# TODO: Comment the next line if you want to checkin your web deploy settings
# but database connection strings (with potential passwords) will be unencrypted
*.pubxml
*.publishproj
# Microsoft Azure Web App publish settings. Comment the next line if you want to
# checkin your Azure Web App publish settings, but sensitive information contained
# in these scripts will be unencrypted
PublishScripts/
# NuGet Packages
*.nupkg
# The packages folder can be ignored because of Package Restore
**/packages/*
# except build/, which is used as an MSBuild target.
!**/packages/build/
# Uncomment if necessary however generally it will be regenerated when needed
#!**/packages/repositories.config
# NuGet v3's project.json files produces more ignoreable files
*.nuget.props
*.nuget.targets
# Microsoft Azure Build Output
csx/
*.build.csdef
# Microsoft Azure Emulator
ecf/
rcf/
# Windows Store app package directories and files
AppPackages/
BundleArtifacts/
Package.StoreAssociation.xml
_pkginfo.txt
# Visual Studio cache files
# files ending in .cache can be ignored
*.[Cc]ache
# but keep track of directories ending in .cache
!*.[Cc]ache/
# Others
ClientBin/
~$*
*.dbmdl
*.dbproj.schemaview
*.jfm
*.pfx
*.publishsettings
node_modules/
orleans.codegen.cs
# Since there are multiple workflows, uncomment next line to ignore bower_components
# (https://github.com/github/gitignore/pull/1529#issuecomment-104372622)
#bower_components/
# RIA/Silverlight projects
Generated_Code/
# Backup & report files from converting an old project file
# to a newer Visual Studio version. Backup files are not needed,
# because we have git ;-)
_UpgradeReport_Files/
Backup*/
UpgradeLog*.XML
UpgradeLog*.htm
# SQL Server files
*.mdf
*.ldf
# Business Intelligence projects
*.rdl.data
*.bim.layout
*.bim_*.settings
# Microsoft Fakes
FakesAssemblies/
# GhostDoc plugin setting file
*.GhostDoc.xml
# Node.js Tools for Visual Studio
.ntvs_analysis.dat
# Visual Studio 6 build log
*.plg
# Visual Studio 6 workspace options file
*.opt
# Visual Studio 6 auto-generated workspace file (contains which files were open etc.)
*.vbw
# Visual Studio LightSwitch build output
**/*.HTMLClient/GeneratedArtifacts
**/*.DesktopClient/GeneratedArtifacts
**/*.DesktopClient/ModelManifest.xml
**/*.Server/GeneratedArtifacts
**/*.Server/ModelManifest.xml
_Pvt_Extensions
# Paket dependency manager
.paket/paket.exe
paket-files/
# FAKE - F# Make
.fake/
# JetBrains Rider
.idea/
*.sln.iml
# CodeRush
.cr/
# Python Tools for Visual Studio (PTVS)
__pycache__/
*.pyc
# Cake - Uncomment if you are using it
# tools/
### SublimeText ###
# cache files for sublime text
*.tmlanguage.cache
*.tmPreferences.cache
*.stTheme.cache
# workspace files are user-specific
*.sublime-workspace
# project files should be checked into the repository, unless a significant
# proportion of contributors will probably not be using SublimeText
# *.sublime-project
# sftp configuration file
sftp-config.json
# Package control specific files
Package Control.last-run
Package Control.ca-list
Package Control.ca-bundle
Package Control.system-ca-bundle
Package Control.cache/
Package Control.ca-certs/
bh_unicode_properties.cache
# Sublime-github package stores a github token in this file
# https://packagecontrol.io/packages/sublime-github
GitHub.sublime-settings
### Windows ###
# Windows image file caches
Thumbs.db
ehthumbs.db
# Folder config file
Desktop.ini
# Recycle Bin used on file shares
$RECYCLE.BIN/
# Windows Installer files
*.cab
*.msi
*.msm
*.msp
# Windows shortcuts
*.lnk
### macOS ###
*.DS_Store
.AppleDouble
.LSOverride
# Icon must end with two \r
Icon
# Thumbnails
._*
# Files that might appear in the root of a volume
.DocumentRevisions-V100
.fseventsd
.Spotlight-V100
.TemporaryItems
.Trashes
.VolumeIcon.icns
.com.apple.timemachine.donotpresent
# Directories potentially created on remote AFP share
.AppleDB
.AppleDesktop
Network Trash Folder
Temporary Items
.apdisk
### Emacs ###
# -*- mode: gitignore; -*-
\#*\#
/.emacs.desktop
/.emacs.desktop.lock
*.elc
auto-save-list
tramp
.\#*
# Org-mode
.org-id-locations
*_archive
# flymake-mode
*_flymake.*
# eshell files
/eshell/history
/eshell/lastdir
# elpa packages
/elpa/
# reftex files
*.rel
# AUCTeX auto folder
/auto/
# cask packages
.cask/
dist/
# Flycheck
flycheck_*.el
# server auth directory
/server/
# projectiles files
.projectile
# directory configuration
.dir-locals.el
### Intellij+iml ###
# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio and Webstorm
# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
# User-specific stuff:
# Sensitive or high-churn files:
# Gradle:
# Mongo Explorer plugin:
## File-based project format:
## Plugin-specific files:
# IntelliJ
# mpeltonen/sbt-idea plugin
# JIRA plugin
# Crashlytics plugin (for Android Studio and IntelliJ)
### Intellij+iml Patch ###
# Reason: https://github.com/joeblau/gitignore.io/issues/186#issuecomment-249601023
*.iml
modules.xml
.idea/misc.xml
*.ipr
### Linux ###
# temporary files which can be created if a process still has a handle open of a deleted file
.fuse_hidden*
# KDE directory preferences
.directory
# Linux trash folder which might appear on any partition or disk
.Trash-*
# .nfs files are created when an open file is removed but is still being accessed
.nfs*
### C ###
# Prerequisites
*.d
# Object files
*.o
*.ko
*.elf
# Linker output
*.map
*.exp
# Precompiled Headers
*.gch
# Libraries
*.lib
*.a
*.la
*.lo
# Shared objects (inc. Windows DLLs)
*.dll
*.so
*.so.*
*.dylib
# Executables
*.exe
*.out
*.app
*.i*86
*.x86_64
*.hex
# Debug files
*.dSYM/
*.su
*.idb
# Kernel Module Compile Results
*.mod*
*.cmd
modules.order
Module.symvers
Mkfile.old
dkms.conf
### C++ ###
# Prerequisites
# Compiled Object files
*.slo
# Precompiled Headers
# Compiled Dynamic libraries
# Fortran module files
*.mod
*.smod
# Compiled Static libraries
*.lai
# Executables
### CMake ###
CMakeCache.txt
CMakeFiles
CMakeScripts
Makefile
cmake_install.cmake
install_manifest.txt
CTestTestfile.cmake
### Python ###
# Byte-compiled / optimized / DLL files
*.py[cod]
*$py.class
# C extensions
# Distribution / packaging
.Python
env/
build/
develop-eggs/
downloads/
eggs/
.eggs/
lib/
lib64/
parts/
sdist/
var/
*.egg-info/
.installed.cfg
*.egg
# PyInstaller
# Usually these files are written by a python script from a template
# before PyInstaller builds the exe, so as to inject date/other infos into it.
*.manifest
*.spec
# Installer logs
pip-log.txt
pip-delete-this-directory.txt
# Unit test / coverage reports
htmlcov/
.tox/
.coverage
.coverage.*
.cache
nosetests.xml
coverage.xml
*,cover
.hypothesis/
# Translations
*.mo
*.pot
# Django stuff:
local_settings.py
# Flask stuff:
instance/
.webassets-cache
# Scrapy stuff:
.scrapy
# Sphinx documentation
docs/_build/
# PyBuilder
target/
# Jupyter Notebook
.ipynb_checkpoints
# pyenv
.python-version
# celery beat schedule file
celerybeat-schedule
# dotenv
.env
# virtualenv
.venv/
venv/
ENV/
# Spyder project settings
.spyderproject
# Rope project settings
.ropeproject
### Java ###
*.class
# BlueJ files
*.ctxt
# Mobile Tools for Java (J2ME)
.mtj.tmp/
# Package Files #
*.jar
*.war
*.ear
# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
hs_err_pid*
### VisualStudio ###
## Ignore Visual Studio temporary files, build results, and
## files generated by popular Visual Studio add-ons.
##
## Get latest from https://github.com/github/gitignore/blob/master/VisualStudio.gitignore
# User-specific files
# User-specific files (MonoDevelop/Xamarin Studio)
# Build results
# Visual Studio 2015 cache/options directory
# Uncomment if you have tasks that create the project's static files in wwwroot
#wwwroot/
# MSTest test Results
# NUNIT
# Build Results of an ATL Project
# .NET Core
# Chutzpah Test files
# Visual C++ cache files
# Visual Studio profiler
# TFS 2012 Local Workspace
# Guidance Automation Toolkit
# ReSharper is a .NET coding add-in
# JustCode is a .NET coding add-in
# TeamCity is a build add-in
# DotCover is a Code Coverage Tool
# Visual Studio code coverage results
# NCrunch
# MightyMoose
# Web workbench (sass)
# Installshield output folder
# DocProject is a documentation generator add-in
# Click-Once directory
# Publish Web Output
# TODO: Comment the next line if you want to checkin your web deploy settings
# but database connection strings (with potential passwords) will be unencrypted
# Microsoft Azure Web App publish settings. Comment the next line if you want to
# checkin your Azure Web App publish settings, but sensitive information contained
# in these scripts will be unencrypted
# NuGet Packages
# The packages folder can be ignored because of Package Restore
# except build/, which is used as an MSBuild target.
# Uncomment if necessary however generally it will be regenerated when needed
#!**/packages/repositories.config
# NuGet v3's project.json files produces more ignoreable files
# Microsoft Azure Build Output
# Microsoft Azure Emulator
# Windows Store app package directories and files
# Visual Studio cache files
# files ending in .cache can be ignored
# but keep track of directories ending in .cache
# Others
# Since there are multiple workflows, uncomment next line to ignore bower_components
# (https://github.com/github/gitignore/pull/1529#issuecomment-104372622)
#bower_components/
# RIA/Silverlight projects
# Backup & report files from converting an old project file
# to a newer Visual Studio version. Backup files are not needed,
# because we have git ;-)
# SQL Server files
# Business Intelligence projects
# Microsoft Fakes
# GhostDoc plugin setting file
# Node.js Tools for Visual Studio
# Visual Studio 6 build log
# Visual Studio 6 workspace options file
# Visual Studio 6 auto-generated workspace file (contains which files were open etc.)
# Visual Studio LightSwitch build output
# Paket dependency manager
# FAKE - F# Make
# JetBrains Rider
# CodeRush
# Python Tools for Visual Studio (PTVS)
# Cake - Uncomment if you are using it
# tools/
### VisualStudio Patch ###

23
LICENSE Normal file
View File

@ -0,0 +1,23 @@
Individual files may be licensed differently, as noted in those files.
MIT License
Copyright (c) 2017 individual contributors
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

24
README.md Normal file
View File

@ -0,0 +1,24 @@
# Advent of Code 2017
## About
These are my solutions to the Advent of Code 2017.
## Author
Brandon Scott
## What is Advent of Code?
[Advent of Code](https://adventofcode.com/) is an Advent calendar of small programming
puzzles for a variety of skill sets and skill levels that can be solved in any
programming language you like. People use them as a speed contest, interview prep,
company training, university coursework, practice problems, or to challenge
each other.
## License
By default, all code in this project is licensed under the MIT license,
copyright the individual contributor(s). Comments in individual files
may specify an alternate license as chosen by a particular individual
for their code. If not specified, the file is MIT.

48
csharp/BScottDay1.cs Normal file
View File

@ -0,0 +1,48 @@
using System;
using System.IO;
namespace AOC2017
{
class BScottDay1 : BScottSolution
{
public override string Name => "Day 1: Inverse Captcha";
public override void Run()
{
string input = "1122";
Console.WriteLine($"Example 1: {CalculateSumPart1(input)}");
input = "1111";
Console.WriteLine($"Example 2: {CalculateSumPart1(input)}");
input = "1234";
Console.WriteLine($"Example 3: {CalculateSumPart1(input)}");
input = "91212129";
Console.WriteLine($"Example 4: {CalculateSumPart1(input)}");
input = File.ReadAllText("BScottDay1.txt");
Console.WriteLine($"Part 1 Answer: {CalculateSumPart1(input)}");
Console.WriteLine($"Part 2 Answer: {CalculateSumPart2(input)}");
}
static long CalculateSumPart1(string input)
{
long sum = 0;
for (int i = 0; i < input.Length; i++)
if (input[i] == input[(i + 1) % input.Length])
sum += int.Parse(input[i].ToString());
return sum;
}
static long CalculateSumPart2(string input)
{
long sum = 0;
int step = input.Length / 2;
for (int i = 0; i < input.Length; i++)
if (input[i] == input[(i + step) % input.Length])
sum += int.Parse(input[i].ToString());
return sum;
}
}
}

1
csharp/BScottDay1.txt Normal file
View File

@ -0,0 +1 @@
818275977931166178424892653779931342156567268946849597948944469863818248114327524824136924486891794739281668741616818614613222585132742386168687517939432911753846817997473555693821316918473474459788714917665794336753628836231159578734813485687247273288926216976992516314415836985611354682821892793983922755395577592859959966574329787693934242233159947846757279523939217844194346599494858459582798326799512571365294673978955928416955127211624234143497546729348687844317864243859238665326784414349618985832259224761857371389133635711819476969854584123589566163491796442167815899539788237118339218699137497532932492226948892362554937381497389469981346971998271644362944839883953967698665427314592438958181697639594631142991156327257413186621923369632466918836951277519421695264986942261781256412377711245825379412978876134267384793694756732246799739464721215446477972737883445615664755923441441781128933369585655925615257548499628878242122434979197969569971961379367756499884537433839217835728263798431874654317137955175565253555735968376115749641527957935691487965161211853476747758982854811367422656321836839326818976668191525884763294465366151349347633968321457954152621175837754723675485348339261288195865348545793575843874731785852718281311481217515834822185477982342271937155479432673815629144664144538221768992733498856934255518875381672342521819499939835919827166318715849161715775427981485233467222586764392783699273452228728667175488552924399518855743923659815483988899924199449721321589476864161778841352853573584489497263216627369841455165476954483715112127465311353411346132671561568444626828453687183385215975319858714144975174516356117245993696521941589168394574287785233685284294357548156487538175462176268162852746996633977948755296869616778577327951858348313582783675149343562362974553976147259225311183729415381527435926224781181987111454447371894645359797229493458443522549386769845742557644349554641538488252581267341635761715674381775778868374988451463624332123361576518411234438681171864923916896987836734129295354684962897616358722633724198278552339794629939574841672355699222747886785616814449297817352118452284785694551841431869545321438468118

94
csharp/BScottDay10.cs Normal file
View File

@ -0,0 +1,94 @@
using System;
using System.IO;
using System.Text;
namespace AOC2017
{
class BScottDay10 : BScottSolution
{
public override string Name => "Day 10: Knot Hash";
public override void Run()
{
string input = File.ReadAllText("BScottDay10.txt");
Console.WriteLine($"Part 1 Answer: {KnotHashPart1(input)}");
Console.WriteLine($"Part 2 Answer: {KnotHashPart2(input)}");
Console.WriteLine($"Part 2 Example Answer #1 (blank): {KnotHashPart2("")}");
Console.WriteLine($"Part 2 Example Answer #2 (AoC 2017): {KnotHashPart2("AoC 2017")}");
Console.WriteLine($"Part 2 Example Answer #3 (1,2,3): {KnotHashPart2("1,2,3")}");
Console.WriteLine($"Part 2 Example Answer #4 (1,2,4): {KnotHashPart2("1,2,4")}");
}
private int KnotHashPart1(string input)
{
int[] lengths = Array.ConvertAll(input.Split(','), s => int.Parse(s));
byte[] list = new byte[256];
int pos = 0, skipSize = 0;
// initialize list
for (int i = 0; i < list.Length; i++)
list[i] = (byte)i;
for (int i = 0; i < lengths.Length; i++)
{
byte[] buff = new byte[lengths[i]];
for (int j = 0; j < buff.Length; j++)
buff[j] = list[(pos + j) % list.Length];
Array.Reverse(buff);
for (int j = 0; j < buff.Length; j++)
list[(pos + j) % list.Length] = buff[j];
pos += (lengths[i] + skipSize) % list.Length; // wrap around
skipSize++; // increase skip size
}
return list[0] * list[1];
}
private string KnotHashPart2(string input)
{
String suffix = Encoding.ASCII.GetString(new byte[] { 17, 31, 73, 47, 23 });
byte[] lengths = Encoding.ASCII.GetBytes(input + suffix); //string of bytes and add a suffix
byte[] list = new byte[256];
byte[] denseHash = new byte[16];
int pos = 0, skipSize = 0;
// initialize list
for (int i = 0; i < list.Length; i++)
list[i] = (byte)i;
// 64 rounds of fun
for (int x = 0; x < 64; x++)
{
for (int i = 0; i < lengths.Length; i++)
{
byte[] buff = new byte[lengths[i]];
for (int j = 0; j < buff.Length; j++)
buff[j] = list[(pos + j) % list.Length];
Array.Reverse(buff);
for (int j = 0; j < buff.Length; j++)
list[(pos + j) % list.Length] = buff[j];
pos += (lengths[i] + skipSize) % list.Length; // wrap around
skipSize++; // increase skip size
}
}
// do the Xor magic
for (int i = 0; i < 16; i++)
{
for (int j = 0; j < 16; j++)
denseHash[i] ^= list[i * 16 + j];
}
return BitConverter.ToString(denseHash).Replace("-", "").ToLower();
}
}
}

1
csharp/BScottDay10.txt Normal file
View File

@ -0,0 +1 @@
94,84,0,79,2,27,81,1,123,93,218,23,103,255,254,243

65
csharp/BScottDay11.cs Normal file
View File

@ -0,0 +1,65 @@
using System;
using System.IO;
namespace AOC2017
{
class BScottDay11 : BScottSolution
{
public override string Name => "Day 11: Hex Ed";
public override void Run()
{
Console.WriteLine($"Part 1 Example Answer #1 (ne,ne,ne):\t\t{CalculateDistances("ne,ne,ne").Item1}");
Console.WriteLine($"Part 1 Example Answer #2 (ne,ne,sw,sw):\t\t{CalculateDistances("ne,ne,sw,sw").Item1}");
Console.WriteLine($"Part 1 Example Answer #3 (ne,ne,s,s):\t\t{CalculateDistances("ne,ne,s,s").Item1}");
Console.WriteLine($"Part 1 Example Answer #4 (se,sw,se,sw,sw):\t{CalculateDistances("se,sw,se,sw,sw").Item1}");
string input = File.ReadAllText("BScottDay11.txt");
Console.WriteLine($"Part 1 Answer:\t{CalculateDistances(input).Item1}");
Console.WriteLine($"Part 2 Answer:\t{CalculateDistances(input).Item2}");
}
private static Tuple<int,int> CalculateDistances(string input)
{
string[] commands = input.Split(',');
int x = 0, y = 0, distance = 0, maxDistance = 0;
foreach (string cmd in commands)
{
switch (cmd)
{
case "n":
y--;
break;
case "s":
y++;
break;
case "ne":
x++;
break;
case "sw":
x--;
break;
case "se":
y++;
x++;
break;
case "nw":
y--;
x--;
break;
}
distance = Math.Max(Math.Abs(y), Math.Max(Math.Abs(x), Math.Abs((x - y) * -1)));
if (distance > maxDistance)
maxDistance = distance;
}
return Tuple.Create(distance,maxDistance);
}
}
}

1
csharp/BScottDay11.txt Normal file

File diff suppressed because one or more lines are too long

95
csharp/BScottDay12.cs Normal file
View File

@ -0,0 +1,95 @@
using System;
using System.Collections.Generic;
using System.IO;
using System.Text.RegularExpressions;
namespace AOC2017
{
class BScottDay12 : BScottSolution
{
public override string Name => "Day 12: Digital Plumber";
public override void Run()
{
string[] exampleInput = new[] {
"0 <-> 2",
"1 <-> 1",
"2 <-> 0, 3, 4",
"3 <-> 2, 4",
"4 <-> 2, 3, 6",
"5 <-> 6",
"6 <-> 4, 5"
};
Console.WriteLine($"Part 1 Example Answer: {DigitalPlumberPart1(exampleInput)}");
Console.WriteLine($"Part 2 Example Answer: {DigitalPlumberPart2(exampleInput)}");
string[] input = File.ReadAllLines("BScottDay12.txt");
Console.WriteLine($"Part 1 Answer: {DigitalPlumberPart1(input)}");
Console.WriteLine($"Part 2 Answer: {DigitalPlumberPart2(input)}");
}
private int DigitalPlumberPart1(string[] input)
{
Dictionary<int, int[]> programDictionary = ParseInput(input);
List<int> connected = new List<int>();
GetConnectedPrograms(programDictionary, connected, 0, 0);
return connected.Count;
}
private int DigitalPlumberPart2(string[] input)
{
Dictionary<int, int[]> programDictionary = ParseInput(input);
List<int> connected = new List<int>();
int groups = 0;
foreach (var programId in programDictionary.Keys)
{
if (!connected.Contains(programId))
{
GetConnectedPrograms(programDictionary, connected, programId, 0);
groups++;
}
}
return groups;
}
private void GetConnectedPrograms(Dictionary<int, int[]> programDictionary, List<int> connected, int start, int level)
{
// stack overflow protection
if (level > 100)
return;
foreach (var programId in programDictionary[start])
{
if (!connected.Contains(programId))
{
connected.Add(programId);
GetConnectedPrograms(programDictionary, connected, programId, ++level);
}
}
}
private Dictionary<int, int[]> ParseInput(string[] input)
{
Dictionary<int, int[]> programDictionary = new Dictionary<int, int[]>();
Regex regex = new Regex(@"([\d]+) <-> (?:([\d]+)*(?:, )?)*");
for (int i = 0; i < input.Length; i++)
{
Match match = regex.Match(input[i]);
if (match.Success)
{
List<int> programList = new List<int>();
foreach (Capture capture in match.Groups[2].Captures)
programList.Add(int.Parse(capture.Value));
programDictionary.Add(int.Parse(match.Groups[1].Value), programList.ToArray());
}
}
return programDictionary;
}
}
}

2000
csharp/BScottDay12.txt Normal file

File diff suppressed because it is too large Load Diff

92
csharp/BScottDay13.cs Normal file
View File

@ -0,0 +1,92 @@
using System;
using System.Collections.Generic;
using System.IO;
namespace AOC2017
{
class BScottDay13 : BScottSolution
{
public override string Name => "Day 13: Packet Scanners";
public override void Run()
{
string[] exampleInput = new[] {
"0: 3",
"1: 2",
"4: 4",
"6: 4"
};
Console.WriteLine($"Part 1 Example Answer: {PacketScannerPart1(exampleInput)}");
Console.WriteLine($"Part 2 Example Answer: {PacketScannerPart2(exampleInput)}");
string[] input = File.ReadAllLines("BScottDay13.txt");
Console.WriteLine($"Part 1 Answer: {PacketScannerPart1(input)}");
Console.WriteLine($"Part 2 Answer: {PacketScannerPart2(input)}");
}
private int PacketScannerPart1(string[] input)
{
Dictionary<int, Layer> firewallList = new Dictionary<int, Layer>();
foreach (var layer in input)
{
int[] args = Array.ConvertAll(layer.Split(':'), s => int.Parse(s.Trim()));
firewallList.Add(args[0], new Layer(args[0], args[1]));
}
int totalSeverity = 0;
foreach (int key in firewallList.Keys)
{
if (key % (2 * firewallList[key].Range - 2) == 0)
totalSeverity += firewallList[key].Severity;
}
return totalSeverity;
}
private int PacketScannerPart2(string[] input)
{
Dictionary<int, Layer> firewallList = new Dictionary<int, Layer>();
foreach (var layer in input)
{
int[] args = Array.ConvertAll(layer.Split(':'), s => int.Parse(s.Trim()));
firewallList.Add(args[0], new Layer(args[0], args[1]));
}
for (int delay = 10; delay < int.MaxValue; delay++)
{
bool isCaught = false;
foreach (int key in firewallList.Keys)
{
if ((key + delay) % (2 * firewallList[key].Range - 2) == 0)
{
isCaught = true;
break;
}
}
if (!isCaught)
return delay;
}
return -1;
}
class Layer
{
public int Depth { get; private set; }
public int Range { get; private set; }
public int Severity => Depth * Range;
public Layer(int depth, int range)
{
Depth = depth;
Range = range;
}
}
}
}

43
csharp/BScottDay13.txt Normal file
View File

@ -0,0 +1,43 @@
0: 4
1: 2
2: 3
4: 4
6: 6
8: 5
10: 6
12: 6
14: 6
16: 8
18: 8
20: 9
22: 12
24: 8
26: 8
28: 8
30: 12
32: 12
34: 8
36: 12
38: 10
40: 12
42: 12
44: 10
46: 12
48: 14
50: 12
52: 14
54: 14
56: 12
58: 14
60: 12
62: 14
64: 18
66: 14
68: 14
72: 14
76: 14
82: 14
86: 14
88: 18
90: 14
92: 17

134
csharp/BScottDay14.cs Normal file
View File

@ -0,0 +1,134 @@
using System;
using System.Collections.Generic;
using System.Text;
namespace AOC2017
{
class BScottDay14 : BScottSolution
{
public override string Name => "Day 14: Disk Defragmentation";
public override void Run()
{
string input = "flqrgnkx";
Console.WriteLine($"Part 1 Example Answer: {DiskDefragmentationPart1(input)}");
Console.WriteLine($"Part 2 Example Answer: {DiskDefragmentationPart2(input)}");
input = "oundnydw";
Console.WriteLine($"Part 1 Answer: {DiskDefragmentationPart1(input)}");
Console.WriteLine($"Part 2 Answer: {DiskDefragmentationPart2(input)}");
}
private int DiskDefragmentationPart1(string input)
{
byte[][] disk = new byte[128][];
for (int i = 0; i < 128; i++)
disk[i] = KnotHash($"{input}-{i}");
int sum = 0;
for (int i = 0; i < 128; i++)
for (int j = 0; j < 128; j++)
sum += disk[i][j];
return sum;
}
private int DiskDefragmentationPart2(string input)
{
byte[][] disk = new byte[128][];
for (int i = 0; i < 128; i++)
disk[i] = KnotHash($"{input}-{i}");
List<Tuple<int, int>> map = new List<Tuple<int, int>>();
for (int i = 0; i < 128; i++)
for (int j = 0; j < 128; j++)
if (disk[i][j] == 1)
map.Add(new Tuple<int, int>(i, j));
int regions = 0;
while (map.Count > 0)
{
FindRegion(map);
regions++;
}
return regions;
}
private void FindRegion(List<Tuple<int, int>> map)
{
Stack<Tuple<int, int>> stack = new Stack<Tuple<int, int>>();
stack.Push(map[map.Count - 1]);
map.RemoveAt(map.Count - 1);
int[,] deltas = { { 1, 0 }, { -1, 0 }, { 0, 1 }, { 0, -1 } };
while (stack.Count > 0)
{
Tuple<int, int> fragment = stack.Pop();
for (int i = 0; i < deltas.GetLength(0); i++)
{
int dy = fragment.Item1 + deltas[i, 0];
int dx = fragment.Item2 + deltas[i, 1];
if (dy < 0 || dy >= 128 || dx < 0 || dy >= 128)
continue;
int index = map.FindIndex(eri => eri.Item1 == dy && eri.Item2 == dx);
if (index != -1)
{
stack.Push(map[index]);
map.RemoveAt(index);
}
}
}
}
// from day 10
private byte[] KnotHash(string input)
{
String suffix = Encoding.ASCII.GetString(new byte[] { 17, 31, 73, 47, 23 });
byte[] lengths = Encoding.ASCII.GetBytes(input + suffix); //string of bytes and add a suffix
byte[] list = new byte[256];
byte[] denseHash = new byte[16];
int pos = 0, skipSize = 0;
// initialize list
for (int i = 0; i < list.Length; i++)
list[i] = (byte)i;
// 64 rounds of fun
for (int x = 0; x < 64; x++)
{
for (int i = 0; i < lengths.Length; i++)
{
byte[] buff = new byte[lengths[i]];
for (int j = 0; j < buff.Length; j++)
buff[j] = list[(pos + j) % list.Length];
for (int j = 0; j < buff.Length; j++)
list[(pos + j) % list.Length] = buff[(buff.Length - 1) - j];
pos += (lengths[i] + skipSize++) % list.Length; // wrap around, increase skipsize
}
}
// do the Xor magic
for (int i = 0; i < 16; i++)
{
for (int j = 0; j < 16; j++)
denseHash[i] ^= list[i * 16 + j];
}
byte[] output = new byte[128];
for (int i = 0; i < 16; i++)
{
for (int j = 0; j < 8; j++)
output[i * 8 + (7 - j)] = (byte)((denseHash[i] >> j) & 0x1);
}
return output;
}
}
}

61
csharp/BScottDay15.cs Normal file
View File

@ -0,0 +1,61 @@
using System;
using System.Collections.Generic;
namespace AOC2017
{
class BScottDay15 : BScottSolution
{
public override string Name => "Day 15: Dueling Generators";
public override void Run()
{
int sampleSize = 40000000;
int inputA = 679;
int inputB = 771;
Console.WriteLine($"Part 1 Example Answer: {DuelingGeneratorsPart1(sampleSize, 65, 8921)}");
Console.WriteLine($"Part 1 Answer: {DuelingGeneratorsPart1(sampleSize, inputA, inputB)}");
Console.WriteLine($"Part 2 Example Answer: {DuelingGeneratorsPart2(sampleSize, 65, 8921)}");
Console.WriteLine($"Part 2 Answer: {DuelingGeneratorsPart2(sampleSize, inputA, inputB)}");
}
private int DuelingGeneratorsPart1(int sampleSize, int generatorA, int generatorB)
{
int count = 0;
for (int i = 0; i < sampleSize; i++)
{
generatorA = (int)(((ulong) generatorA * 16807ul) % int.MaxValue);
generatorB = (int)(((ulong) generatorB * 48271ul) % int.MaxValue);
if ((generatorA & 0xffff) == (generatorB & 0xffff))
count++;
}
return count;
}
private int DuelingGeneratorsPart2(int sampleSize, int generatorA, int generatorB)
{
int count = 0;
List<int> cmpA = new List<int>();
List<int> cmpB = new List<int>();
for (int i = 0; i < sampleSize; i++)
{
generatorA = (int)(((ulong)generatorA * 16807ul) % int.MaxValue);
generatorB = (int)(((ulong)generatorB * 48271ul) % int.MaxValue);
if (generatorA % 4 == 0) cmpA.Add(generatorA);
if (generatorB % 8 == 0) cmpB.Add(generatorB);
}
for (int i = 0; i < Math.Min(cmpA.Count, cmpB.Count); i++)
{
if ((cmpA[i] & 0xffff) == (cmpB[i] & 0xffff))
count++;
}
return count;
}
}
}

122
csharp/BScottDay16.cs Normal file
View File

@ -0,0 +1,122 @@
using System;
using System.Collections.Generic;
using System.IO;
namespace AOC2017
{
class BScottDay16 : BScottSolution
{
public override string Name => "Day 16: Permutation Promenade";
public override void Run()
{
string[] input = File.ReadAllText("BScottDay16.txt").Split(',');
Console.WriteLine($"Part 1 Answer: {PermutationPromenadePart1(input)}");
Console.WriteLine($"Part 2 Answer: {PermutationPromenadePart2(input)}");
}
private string PermutationPromenadePart1(string[] instructions)
{
char[] programs = new char[16];
for (int i = 0; i < programs.Length; i++)
programs[i] = (char)('a' + i);
for (int i = 0; i < instructions.Length; i++)
{
string[] args = instructions[i].Substring(1).Split('/');
int a, b;
char tmp;
switch (instructions[i][0])
{
case 's': // Spin
int startPos = 16 - int.Parse(args[0]);
char[] temp = new char[16];
for (int j = 0; j < temp.Length; j++)
temp[j] = programs[(j + startPos) % temp.Length];
for (int j = 0; j < temp.Length; j++)
programs[j] = temp[j];
break;
case 'x': // Exchange
a = int.Parse(args[0]);
b = int.Parse(args[1]);
tmp = programs[b];
programs[b] = programs[a];
programs[a] = tmp;
break;
case 'p': // Partner
a = Array.IndexOf(programs, args[0][0]);
b = Array.IndexOf(programs, args[1][0]);
tmp = programs[b];
programs[b] = programs[a];
programs[a] = tmp;
break;
}
}
return new String(programs);
}
private string PermutationPromenadePart2(string[] instructions)
{
char[] programs = new char[16];
List<string> cache = new List<string>();
for (int i = 0; i < programs.Length; i++)
programs[i] = (char)('a' + i);
// add initial state to cache
cache.Add(new string(programs));
for (int x =