days 11, 12, 13

10 months ago · 632dcec217
parent b2cabd079b
commit 632dcec217
32 changed files with 901 additions and 0 deletions
--- a/day11/.gitignore
+++ b/day11/.gitignore
@ -0,0 +1,29 @@
+### IntelliJ IDEA ###
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/
+
+### Mac OS ###
+.DS_Store
--- a/day11/.idea/.gitignore
+++ b/day11/.idea/.gitignore
@ -0,0 +1,8 @@
+# Default ignored files
+/shelf/
+/workspace.xml
+# Editor-based HTTP Client requests
+/httpRequests/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml
--- a/day11/.idea/inspectionProfiles/Project_Default.xml
+++ b/day11/.idea/inspectionProfiles/Project_Default.xml
@ -0,0 +1,6 @@
+<component name="InspectionProjectProfileManager">
+  <profile version="1.0">
+    <option name="myName" value="Project Default" />
+    <inspection_tool class="ReplaceUntilWithRangeUntil" enabled="true" level="WEAK WARNING" enabled_by_default="true" />
+  </profile>
+</component>
--- a/day11/.idea/kotlinc.xml
+++ b/day11/.idea/kotlinc.xml
@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Kotlin2JvmCompilerArguments">
+    <option name="jvmTarget" value="1.8" />
+  </component>
+  <component name="KotlinCommonCompilerArguments">
+    <option name="apiVersion" value="1.9" />
+    <option name="languageVersion" value="1.9" />
+  </component>
+</project>
--- a/day11/.idea/libraries/KotlinJavaRuntime.xml
+++ b/day11/.idea/libraries/KotlinJavaRuntime.xml
@ -0,0 +1,26 @@
+<component name="libraryTable">
+  <library name="KotlinJavaRuntime" type="repository">
+    <properties maven-id="org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.9.0" />
+    <CLASSES>
+      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib-jdk8/1.9.0/kotlin-stdlib-jdk8-1.9.0.jar!/" />
+      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib/1.9.0/kotlin-stdlib-1.9.0.jar!/" />
+      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib-common/1.9.0/kotlin-stdlib-common-1.9.0.jar!/" />
+      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/annotations/13.0/annotations-13.0.jar!/" />
+      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib-jdk7/1.9.0/kotlin-stdlib-jdk7-1.9.0.jar!/" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib-jdk8/1.9.0/kotlin-stdlib-jdk8-1.9.0-javadoc.jar!/" />
+      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib/1.9.0/kotlin-stdlib-1.9.0-javadoc.jar!/" />
+      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib-common/1.9.0/kotlin-stdlib-common-1.9.0-javadoc.jar!/" />
+      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/annotations/13.0/annotations-13.0-javadoc.jar!/" />
+      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib-jdk7/1.9.0/kotlin-stdlib-jdk7-1.9.0-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib-jdk8/1.9.0/kotlin-stdlib-jdk8-1.9.0-sources.jar!/" />
+      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib/1.9.0/kotlin-stdlib-1.9.0-sources.jar!/" />
+      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib-common/1.9.0/kotlin-stdlib-common-1.9.0-sources.jar!/" />
+      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/annotations/13.0/annotations-13.0-sources.jar!/" />
+      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib-jdk7/1.9.0/kotlin-stdlib-jdk7-1.9.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
--- a/day11/.idea/libraries/Permanent_Script_Dependencies.xml
+++ b/day11/.idea/libraries/Permanent_Script_Dependencies.xml
@ -0,0 +1,16 @@
+<component name="libraryTable">
+  <library name="Permanent Script Dependencies">
+    <CLASSES>
+      <root url="file://$USER_HOME$/Library/Caches/JetBrains/IntelliJIdea2023.3/kotlinNotebook/day11.ac435c4f/kernels/0.12.0-93/kotlin-jupyter-ide-classpath-shadowed-jar/kotlin-jupyter-ide-classpath-shadowed-0.12.0-93.jar" />
+      <root url="file://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib-jdk8/1.9.0/kotlin-stdlib-jdk8-1.9.0.jar" />
+      <root url="file://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib/1.9.0/kotlin-stdlib-1.9.0.jar" />
+      <root url="file://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib-common/1.9.0/kotlin-stdlib-common-1.9.0.jar" />
+      <root url="file://$MAVEN_REPOSITORY$/org/jetbrains/annotations/13.0/annotations-13.0.jar" />
+      <root url="file://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib-jdk7/1.9.0/kotlin-stdlib-jdk7-1.9.0.jar" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="file://$USER_HOME$/Library/Caches/JetBrains/IntelliJIdea2023.3/kotlinNotebook/day11.ac435c4f/kernels/0.12.0-93/kotlin-jupyter-script-classpath-shadowed-sources-jar/kotlin-jupyter-script-classpath-shadowed-0.12.0-93-sources.jar" />
+    </SOURCES>
+  </library>
+</component>
--- a/day11/.idea/misc.xml
+++ b/day11/.idea/misc.xml
@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_21" default="true" project-jdk-name="openjdk-21" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>
--- a/day11/.idea/modules.xml
+++ b/day11/.idea/modules.xml
@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/day11.iml" filepath="$PROJECT_DIR$/day11.iml" />
+    </modules>
+  </component>
+</project>
--- a/day11/.idea/vcs.xml
+++ b/day11/.idea/vcs.xml
@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$/.." vcs="Git" />
+  </component>
+</project>
--- a/day11/day11.iml
+++ b/day11/day11.iml
@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/resources" type="java-resource" />
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/test" isTestSource="true" />
+      <sourceFolder url="file://$MODULE_DIR$/testResources" type="java-test-resource" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="library" name="KotlinJavaRuntime" level="project" />
+  </component>
+</module>
--- a/day11/day11.ipynb
+++ b/day11/day11.ipynb
@ -0,0 +1,314 @@
+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "source": [
+    "First of all, we set up a function to parse all the input, and a data class."
+   ],
+   "metadata": {
+    "collapsed": false
+   }
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 50,
+   "outputs": [],
+   "source": [
+    "import java.io.File\n",
+    "\n",
+    "data class Operation(var amount: Int, var action: Action) {\n",
+    "    enum class Action { ADD, MULTIPLY, SQUARE }\n",
+    "}\n",
+    "data class Monkey(var items:MutableList<Int>,\n",
+    "    var operation: Operation,\n",
+    "    var divisor: Int,\n",
+    "    var trueTarget: Int,\n",
+    "    var falseTarget: Int)\n",
+    "\n",
+    "fun read(file: String): MutableList<Monkey> {\n",
+    "    val monkeys: MutableList<Monkey> = mutableListOf()\n",
+    "    var items: MutableList<Int> = mutableListOf()\n",
+    "    var operation: Operation = Operation(0, Operation.Action.ADD)\n",
+    "    var divisor = 0\n",
+    "    var trueTarget = 0\n",
+    "    var falseTarget = 0\n",
+    "\n",
+    "    for (line in File(file).readLines()) {\n",
+    "        if (line.contains(\"Starting items:\")) {\n",
+    "            items = line.substringAfter(\":\").split(\",\").map { Integer.parseInt(it.trim()) }.toMutableList();\n",
+    "        }\n",
+    "\n",
+    "        if (line.contains(\"Operation\")) {\n",
+    "            val op = when (line.substringAfter(\"old \")[0]) {\n",
+    "                '*' -> Operation.Action.MULTIPLY\n",
+    "                '+' -> Operation.Action.ADD\n",
+    "                else -> Operation.Action.ADD\n",
+    "            }\n",
+    "            if (line.substringAfter(\"old\").contains(\"old\")) {\n",
+    "                operation = Operation(0, Operation.Action.SQUARE)\n",
+    "            } else {\n",
+    "                val amt = Integer.parseInt(line.substringAfter(\"old \").substring(1).trim())\n",
+    "                operation = Operation(amt, op)\n",
+    "            }\n",
+    "        }\n",
+    "\n",
+    "        if (line.contains(\"Test:\")) {\n",
+    "            divisor = Integer.parseInt(line.substringAfter(\"divisible by \"))\n",
+    "        }\n",
+    "        if (line.contains(\"If true:\")) {\n",
+    "            trueTarget = Integer.parseInt(line.substringAfter(\"monkey \"))\n",
+    "        }\n",
+    "        if (line.contains(\"If false:\")) {\n",
+    "            falseTarget = Integer.parseInt(line.substringAfter(\"monkey \"))\n",
+    "        }\n",
+    "\n",
+    "        if (line.isBlank()) {\n",
+    "            monkeys.add(Monkey(items, operation, divisor, trueTarget, falseTarget))\n",
+    "        }\n",
+    "    }\n",
+    "\n",
+    "    \n",
+    "    return monkeys\n",
+    "}"
+   ],
+   "metadata": {
+    "collapsed": true,
+    "ExecuteTime": {
+     "end_time": "2023-12-17T03:36:28.544624Z",
+     "start_time": "2023-12-17T03:36:28.272541Z"
+    }
+   }
+  },
+  {
+   "cell_type": "markdown",
+   "source": [
+    "Next up we need a function for executing one step of all the monkeys' actions."
+   ],
+   "metadata": {
+    "collapsed": false
+   }
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 51,
+   "outputs": [],
+   "source": [
+    "fun operate(op: Operation, x: Int): Int {\n",
+    "    return when (op.action) {\n",
+    "        Operation.Action.ADD -> x + op.amount\n",
+    "        Operation.Action.MULTIPLY -> x * op.amount\n",
+    "        Operation.Action.SQUARE -> x * x\n",
+    "    } / 3\n",
+    "}\n",
+    "fun execute(monkeys: MutableList<Monkey>, idx: Int): Int {\n",
+    "    val me = monkeys[idx]\n",
+    "    for (i in 0..<me.items.count()) {\n",
+    "        val worry = operate(me.operation, me.items[i])\n",
+    "        if (worry % me.divisor == 0) monkeys[me.trueTarget].items.add(worry)\n",
+    "        else monkeys[me.falseTarget].items.add(worry)\n",
+    "    }\n",
+    "    val output = me.items.count()\n",
+    "    me.items.clear()\n",
+    "    return output\n",
+    "}\n",
+    "\n",
+    "fun runRound(monkeys: MutableList<Monkey>, monkeyBusiness: MutableList<Int>) {\n",
+    "    for (i in 0..<monkeys.count()) {\n",
+    "        monkeyBusiness[i] += execute(monkeys, i);\n",
+    "    }\n",
+    "}"
+   ],
+   "metadata": {
+    "collapsed": false,
+    "ExecuteTime": {
+     "end_time": "2023-12-17T03:36:31.292654Z",
+     "start_time": "2023-12-17T03:36:31.108619Z"
+    }
+   }
+  },
+  {
+   "cell_type": "markdown",
+   "source": [
+    "Now that we've set everything up, it's time to fly!"
+   ],
+   "metadata": {
+    "collapsed": false
+   }
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 58,
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "[Monkey(items=[71, 86], operation=Operation(amount=13, action=MULTIPLY), divisor=19, trueTarget=6, falseTarget=7), Monkey(items=[66, 50, 90, 53, 88, 85], operation=Operation(amount=3, action=ADD), divisor=2, trueTarget=5, falseTarget=4), Monkey(items=[97, 54, 89, 62, 84, 80, 63], operation=Operation(amount=6, action=ADD), divisor=13, trueTarget=4, falseTarget=1), Monkey(items=[82, 97, 56, 92], operation=Operation(amount=2, action=ADD), divisor=5, trueTarget=6, falseTarget=0), Monkey(items=[50, 99, 67, 61, 86], operation=Operation(amount=0, action=SQUARE), divisor=7, trueTarget=5, falseTarget=3), Monkey(items=[61, 66, 72, 55, 64, 53, 72, 63], operation=Operation(amount=4, action=ADD), divisor=11, trueTarget=3, falseTarget=0), Monkey(items=[59, 79, 63], operation=Operation(amount=7, action=MULTIPLY), divisor=17, trueTarget=2, falseTarget=7), Monkey(items=[55], operation=Operation(amount=7, action=ADD), divisor=3, trueTarget=2, falseTarget=1)]\n",
+      "108\n",
+      "304\n",
+      "957\n",
+      "1974\n",
+      "3074\n",
+      "4891\n",
+      "6880\n",
+      "8930\n",
+      "12760\n",
+      "15872\n",
+      "19734\n",
+      "25110\n",
+      "30788\n",
+      "36672\n",
+      "43878\n",
+      "51300\n",
+      "60258\n",
+      "68382\n",
+      "79230\n",
+      "88208\n",
+      "100160\n",
+      "110888\n",
+      "124244\n",
+      "136160\n",
+      "150920\n",
+      "164024\n",
+      "179760\n",
+      "194040\n",
+      "211584\n",
+      "226575\n",
+      "245009\n",
+      "261632\n",
+      "281945\n",
+      "299756\n",
+      "320340\n",
+      "339888\n",
+      "362388\n",
+      "383160\n",
+      "407028\n",
+      "428370\n",
+      "454260\n",
+      "476790\n",
+      "502665\n",
+      "527075\n",
+      "555009\n",
+      "580643\n",
+      "609160\n",
+      "636006\n",
+      "666652\n",
+      "693888\n",
+      "725032\n",
+      "755160\n",
+      "786744\n",
+      "818120\n",
+      "851904\n",
+      "884540\n",
+      "917739\n",
+      "952575\n",
+      "988011\n",
+      "1023132\n",
+      "1060875\n",
+      "1097256\n",
+      "1136331\n",
+      "1172888\n",
+      "1212176\n",
+      "1252160\n",
+      "1292744\n",
+      "1332870\n",
+      "1373559\n",
+      "1416099\n",
+      "1459239\n",
+      "1501850\n",
+      "1547511\n",
+      "1591382\n",
+      "1638375\n",
+      "1683506\n",
+      "1731831\n",
+      "1776888\n",
+      "1825176\n",
+      "1874160\n",
+      "1923744\n",
+      "1972620\n",
+      "2024904\n",
+      "2075040\n",
+      "2125739\n",
+      "2178575\n",
+      "2232011\n",
+      "2286143\n",
+      "2340875\n",
+      "2396303\n",
+      "2452331\n",
+      "2509055\n",
+      "2564772\n",
+      "2622780\n",
+      "2681376\n",
+      "2740680\n",
+      "2800572\n",
+      "2859480\n",
+      "2920656\n",
+      "2980802\n",
+      "3043250\n"
+     ]
+    }
+   ],
+   "source": [
+    "val monkeys = read(\"b.input\")\n",
+    "var monkeyBusiness = monkeys.map { 0 } .toMutableList()\n",
+    "\n",
+    "println(\"$monkeys\")\n",
+    "\n",
+    "for (i in 0..100) {\n",
+    "    //println(\"After round ${i+1}:\")\n",
+    "    runRound(monkeys, monkeyBusiness)\n",
+    "    println(\"${monkeyBusiness.sortedDescending().take(2).reduce{a,b->a*b}}\")\n",
+    "}\n"
+   ],
+   "metadata": {
+    "collapsed": false,
+    "ExecuteTime": {
+     "end_time": "2023-12-17T03:43:00.545746Z",
+     "start_time": "2023-12-17T03:43:00.401417Z"
+    }
+   }
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 43,
+   "outputs": [
+    {
+     "data": {
+      "text/plain": "88208"
+     },
+     "execution_count": 43,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "296*298"
+   ],
+   "metadata": {
+    "collapsed": false,
+    "ExecuteTime": {
+     "end_time": "2023-12-17T03:29:13.658590Z",
+     "start_time": "2023-12-17T03:29:13.543931Z"
+    }
+   }
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Kotlin",
+   "language": "kotlin",
+   "name": "kotlin"
+  },
+  "language_info": {
+   "name": "kotlin",
+   "version": "1.9.0",
+   "mimetype": "text/x-kotlin",
+   "file_extension": ".kt",
+   "pygments_lexer": "kotlin",
+   "codemirror_mode": "text/x-kotlin",
+   "nbconvert_exporter": ""
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 0
+}
--- a/day11/src/Main.kt
+++ b/day11/src/Main.kt
@ -0,0 +1,3 @@
+fun main() {
+    println("Hello World!")
+}
--- a/day12/.gitignore
+++ b/day12/.gitignore
@ -0,0 +1,29 @@
+### IntelliJ IDEA ###
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/
+
+### Mac OS ###
+.DS_Store
--- a/day12/.idea/.gitignore
+++ b/day12/.idea/.gitignore
@ -0,0 +1,8 @@
+# Default ignored files
+/shelf/
+/workspace.xml
+# Editor-based HTTP Client requests
+/httpRequests/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml
--- a/day12/.idea/inspectionProfiles/Project_Default.xml
+++ b/day12/.idea/inspectionProfiles/Project_Default.xml
@ -0,0 +1,6 @@
+<component name="InspectionProjectProfileManager">
+  <profile version="1.0">
+    <option name="myName" value="Project Default" />
+    <inspection_tool class="ReplaceUntilWithRangeUntil" enabled="true" level="WEAK WARNING" enabled_by_default="true" />
+  </profile>
+</component>
--- a/day12/.idea/kotlinc.xml
+++ b/day12/.idea/kotlinc.xml
@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Kotlin2JvmCompilerArguments">
+    <option name="jvmTarget" value="1.8" />
+  </component>
+  <component name="KotlinCommonCompilerArguments">
+    <option name="apiVersion" value="1.9" />
+    <option name="languageVersion" value="1.9" />
+  </component>
+</project>
--- a/day12/.idea/libraries/KotlinJavaRuntime.xml
+++ b/day12/.idea/libraries/KotlinJavaRuntime.xml
@ -0,0 +1,26 @@
+<component name="libraryTable">
+  <library name="KotlinJavaRuntime" type="repository">
+    <properties maven-id="org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.9.0" />
+    <CLASSES>
+      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib-jdk8/1.9.0/kotlin-stdlib-jdk8-1.9.0.jar!/" />
+      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib/1.9.0/kotlin-stdlib-1.9.0.jar!/" />
+      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib-common/1.9.0/kotlin-stdlib-common-1.9.0.jar!/" />
+      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/annotations/13.0/annotations-13.0.jar!/" />
+      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib-jdk7/1.9.0/kotlin-stdlib-jdk7-1.9.0.jar!/" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib-jdk8/1.9.0/kotlin-stdlib-jdk8-1.9.0-javadoc.jar!/" />
+      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib/1.9.0/kotlin-stdlib-1.9.0-javadoc.jar!/" />
+      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib-common/1.9.0/kotlin-stdlib-common-1.9.0-javadoc.jar!/" />
+      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/annotations/13.0/annotations-13.0-javadoc.jar!/" />
+      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib-jdk7/1.9.0/kotlin-stdlib-jdk7-1.9.0-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib-jdk8/1.9.0/kotlin-stdlib-jdk8-1.9.0-sources.jar!/" />
+      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib/1.9.0/kotlin-stdlib-1.9.0-sources.jar!/" />
+      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib-common/1.9.0/kotlin-stdlib-common-1.9.0-sources.jar!/" />
+      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/annotations/13.0/annotations-13.0-sources.jar!/" />
+      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib-jdk7/1.9.0/kotlin-stdlib-jdk7-1.9.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
--- a/day12/.idea/misc.xml
+++ b/day12/.idea/misc.xml
@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_21" default="true" project-jdk-name="openjdk-21" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>
--- a/day12/.idea/modules.xml
+++ b/day12/.idea/modules.xml
@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/day12.iml" filepath="$PROJECT_DIR$/day12.iml" />
+    </modules>
+  </component>
+</project>
--- a/day12/.idea/vcs.xml
+++ b/day12/.idea/vcs.xml
@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$/.." vcs="Git" />
+  </component>
+</project>
--- a/day12/day12.iml
+++ b/day12/day12.iml
@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/resources" type="java-resource" />
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/test" isTestSource="true" />
+      <sourceFolder url="file://$MODULE_DIR$/testResources" type="java-test-resource" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="library" name="KotlinJavaRuntime" level="project" />
+  </component>
+</module>
--- a/day12/src/Main.kt
+++ b/day12/src/Main.kt
@ -0,0 +1,100 @@
+import java.io.File
+import kotlin.math.min
+
+data class Coordinate ( val x: Int, val y: Int )
+
+fun main() {
+    var y = 0
+    var x = 0
+    var start = Coordinate(0,0)
+    var end = Coordinate(0,0)
+    val grid: HashMap<Coordinate, Char> = hashMapOf()
+    for (line in File("b.input").readLines()) {
+        x = 0
+        line.chars().forEach {
+            val c = when(Char(it)) {
+                'S' -> { start = Coordinate(x,y); 'a' }
+                'E' -> { end = Coordinate(x,y); 'z' }
+                else -> Char(it)
+            }
+            grid.put(Coordinate(x,y), c)
+            x++
+        }
+        y++
+    }
+
+    println("start point is $start, end point is $end")
+    val neighbors: Map<Coordinate, Set<Coordinate>> =
+        grid.keys.map {s ->
+            Pair(s,
+                neighbors(s).filter {e ->
+                    grid.containsKey(e) && close(grid.get(s)!!, grid.get(e)!!)
+                }.toSet())
+        }.toMap()
+
+    val distances: MutableMap<Coordinate, Int> = mutableMapOf(start to 0)
+    var nodesToVisit: MutableSet<Coordinate> = mutableSetOf(start)
+    val visited: MutableSet<Coordinate> = mutableSetOf()
+    while (nodesToVisit.isNotEmpty()) {
+        for (currentNode in nodesToVisit.toMutableSet()) {
+            println("visiting $currentNode and examining itss neighbors, ${neighbors[currentNode]}")
+            nodesToVisit.remove(currentNode)
+
+            for (neighbor in neighbors[currentNode]!!) {
+                distances.put(neighbor, min(
+                        distances[neighbor] ?: Int.MAX_VALUE,
+                        (distances[currentNode] ?: (Int.MAX_VALUE - 100)) + 1
+                    )
+                )
+                if (!(neighbor in visited)) {
+                    nodesToVisit.add(neighbor)
+                }
+            }
+
+            visited.add(currentNode)
+        }
+    }
+    println("distance from S to end point is ${distances[end]}")
+
+    var minimum = Int.MAX_VALUE
+    for (startPoint in grid.keys.filter {grid[it] == 'a'}) {
+
+        val distances: MutableMap<Coordinate, Int> = mutableMapOf(startPoint to 0)
+        var nodesToVisit: MutableSet<Coordinate> = mutableSetOf(startPoint)
+        val visited: MutableSet<Coordinate> = mutableSetOf()
+        while (nodesToVisit.isNotEmpty()) {
+            for (currentNode in nodesToVisit.toMutableSet()) {
+                //println("visiting $currentNode and examining itss neighbors, ${neighbors[currentNode]}")
+                nodesToVisit.remove(currentNode)
+
+                for (neighbor in neighbors[currentNode]!!) {
+                    distances.put(
+                        neighbor, min(
+                            distances[neighbor] ?: Int.MAX_VALUE,
+                            (distances[currentNode] ?: (Int.MAX_VALUE - 100)) + 1
+                        )
+                    )
+                    if (!(neighbor in visited)) {
+                        nodesToVisit.add(neighbor)
+                    }
+                }
+
+                visited.add(currentNode)
+            }
+        }
+        minimum = min(distances[end]?: Int.MAX_VALUE, minimum)
+    }
+    println("smallest distance across any starting point was $minimum")
+}
+
+fun neighbors(r: Coordinate): Set<Coordinate>{
+    val left = Coordinate(r.x-1, r.y)
+    val right = Coordinate(r.x+1, r.y)
+    val up = Coordinate(r.x, r.y-1)
+    val down = Coordinate(r.x, r.y+1)
+    return setOf(left, right, up, down)
+}
+
+fun close(a: Char, b: Char): Boolean {
+    return b <= a.inc()
+}
--- a/day13/.gitignore
+++ b/day13/.gitignore
@ -0,0 +1,29 @@
+### IntelliJ IDEA ###
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/
+
+### Mac OS ###
+.DS_Store
--- a/day13/.idea/.gitignore
+++ b/day13/.idea/.gitignore
@ -0,0 +1,8 @@
+# Default ignored files
+/shelf/
+/workspace.xml
+# Editor-based HTTP Client requests
+/httpRequests/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml
--- a/day13/.idea/inspectionProfiles/Project_Default.xml
+++ b/day13/.idea/inspectionProfiles/Project_Default.xml
@ -0,0 +1,6 @@
+<component name="InspectionProjectProfileManager">
+  <profile version="1.0">
+    <option name="myName" value="Project Default" />
+    <inspection_tool class="ReplaceUntilWithRangeUntil" enabled="true" level="WEAK WARNING" enabled_by_default="true" />
+  </profile>
+</component>
--- a/day13/.idea/kotlinc.xml
+++ b/day13/.idea/kotlinc.xml
@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Kotlin2JvmCompilerArguments">
+    <option name="jvmTarget" value="1.8" />
+  </component>
+  <component name="KotlinCommonCompilerArguments">
+    <option name="apiVersion" value="1.9" />
+    <option name="languageVersion" value="1.9" />
+  </component>
+</project>
--- a/day13/.idea/libraries/KotlinJavaRuntime.xml
+++ b/day13/.idea/libraries/KotlinJavaRuntime.xml
@ -0,0 +1,26 @@
+<component name="libraryTable">
+  <library name="KotlinJavaRuntime" type="repository">
+    <properties maven-id="org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.9.0" />
+    <CLASSES>
+      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib-jdk8/1.9.0/kotlin-stdlib-jdk8-1.9.0.jar!/" />
+      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib/1.9.0/kotlin-stdlib-1.9.0.jar!/" />
+      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib-common/1.9.0/kotlin-stdlib-common-1.9.0.jar!/" />
+      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/annotations/13.0/annotations-13.0.jar!/" />
+      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib-jdk7/1.9.0/kotlin-stdlib-jdk7-1.9.0.jar!/" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib-jdk8/1.9.0/kotlin-stdlib-jdk8-1.9.0-javadoc.jar!/" />
+      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib/1.9.0/kotlin-stdlib-1.9.0-javadoc.jar!/" />
+      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib-common/1.9.0/kotlin-stdlib-common-1.9.0-javadoc.jar!/" />
+      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/annotations/13.0/annotations-13.0-javadoc.jar!/" />
+      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib-jdk7/1.9.0/kotlin-stdlib-jdk7-1.9.0-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib-jdk8/1.9.0/kotlin-stdlib-jdk8-1.9.0-sources.jar!/" />
+      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib/1.9.0/kotlin-stdlib-1.9.0-sources.jar!/" />
+      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib-common/1.9.0/kotlin-stdlib-common-1.9.0-sources.jar!/" />
+      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/annotations/13.0/annotations-13.0-sources.jar!/" />
+      <root url="jar://$MAVEN_REPOSITORY$/org/jetbrains/kotlin/kotlin-stdlib-jdk7/1.9.0/kotlin-stdlib-jdk7-1.9.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
--- a/day13/.idea/misc.xml
+++ b/day13/.idea/misc.xml
@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_21" default="true" project-jdk-name="openjdk-21" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>
--- a/day13/.idea/modules.xml
+++ b/day13/.idea/modules.xml
@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/day13.iml" filepath="$PROJECT_DIR$/day13.iml" />
+    </modules>
+  </component>
+</project>
--- a/day13/.idea/vcs.xml
+++ b/day13/.idea/vcs.xml
@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$/.." vcs="Git" />
+  </component>
+</project>
--- a/day13/day13.iml
+++ b/day13/day13.iml
@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/resources" type="java-resource" />
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/test" isTestSource="true" />
+      <sourceFolder url="file://$MODULE_DIR$/testResources" type="java-test-resource" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="library" name="KotlinJavaRuntime" level="project" />
+  </component>
+</module>
--- a/day13/src/Main.kt
+++ b/day13/src/Main.kt
@ -0,0 +1,126 @@
+import java.io.BufferedReader
+import java.io.File
+import kotlin.math.max
+
+open class Packet
+data class IntPacket(val value: Int) : Packet() {
+    override fun toString(): String = value.toString()
+}
+data class ListPacket(val contents: MutableList<Packet>): Packet() {
+    override fun toString(): String = contents.joinToString(",","[","]")
+}
+fun parsePacket(s: String): Packet {
+    val stack: MutableList<ListPacket> = mutableListOf()
+    var running = ""
+    for (c in s) {
+        if (c == '[') {
+            val thisOne = ListPacket(mutableListOf())
+
+            if (stack.isNotEmpty()) {
+                val last = stack.last()
+
+                last.contents.add(thisOne)
+            }
+            if (stack.isEmpty()) {
+                stack.add(thisOne)
+            }
+            stack.add(thisOne)
+        } else if (c == ']') {
+            if (running.isNotEmpty()) {
+                stack.last().contents.add(IntPacket(running.trim().toInt()))
+                running = ""
+
+            }
+            stack.removeLast()
+        } else if (c == ',') {
+            if (running.isNotEmpty()) {
+                stack.last().contents.add(IntPacket(running.trim().toInt()))
+                running = ""
+            }
+        } else {
+            running += c
+        }
+    }
+
+    return stack.last()
+}
+fun main() {
+    println("Hello, AoC 2022 day 13!")
+
+    val file = File("b.input")
+    var reader = file.bufferedReader()
+    val pairs = reader.lineSequence().chunked(3) { it.take(2)};
+    println(parsePacket("[[[]]]").toString())
+
+    println("part 1!")
+    var sum = 0
+    pairs.forEachIndexed { index, strings ->
+        val c = compare(parsePacket(strings[0]), parsePacket(strings[1]))
+        if (c > 0) {
+            println("index ${index+1} are in the right order!")
+            sum += index + 1
+        } else if (c < 0) {
+            println("index ${index+1} are in the wrong order!")
+        } else {
+            println("they're the same??")
+        }
+    }
+    println("the sum of correctly ordered pair indices is $sum")
+    reader.close()
+
+    reader = file.bufferedReader()
+    println("part 2!")
+    val rows = sequence {
+        yieldAll(reader.lineSequence())
+        yield("[[6]]")
+        yield("[[2]]")
+    }
+        .filter { it.isNotEmpty() }
+        .map { parsePacket(it) }
+        .sortedWith { a: Packet, b: Packet -> compare(a,b) }
+        .toList()
+        .asReversed()
+
+    var decoderKey = 1
+    rows.forEachIndexed { index, packet: Packet ->
+        if (compare(packet, parsePacket("[[6]]"))==0) {
+            decoderKey *= index+1
+        } else if (compare(packet, parsePacket("[[2]]"))==0) {
+            decoderKey *= index+1
+        }
+        //println(packet)
+    }
+    println("decoder key is $decoderKey")
+    reader.close()
+
+}
+
+fun compare(left: Packet, right: Packet): Int {
+    if (left is IntPacket && right is IntPacket) {
+        //println("$left and $right are both ints!")
+
+        return right.value - left.value
+    } else if (left is ListPacket && right is ListPacket) {
+        //println("$left and $right are both listpackets!")
+        for (i in 0..<max(left.contents.count(), right.contents.count())) {
+            if (i >= left.contents.count()) {
+                return 1
+            } else if (i >= right.contents.count()) {
+                return -1
+            }
+            val comparison = compare(left.contents[i], right.contents[i])
+            if (comparison != 0) {
+                return comparison
+            }
+        }
+        return 0;
+    } else if (left is ListPacket && right is IntPacket) {
+        //println("converting $right to a listpacket!")
+        return compare(left, ListPacket(contents = mutableListOf(right)))
+    } else if (left is IntPacket && right is ListPacket) {
+        //println("converting $left to a listpacket!")
+        return compare(ListPacket(contents = mutableListOf(left)), right)
+    }
+
+    return 0
+}