en extra commit för att få med mitt illustrativa exempel

This reverts commit d66dbc6034.

2018_07/2018_07.csproj

@@ -35,6 +35,8 @@
   <ItemGroup>
     <Reference Include="System" />
     <Reference Include="System.Core" />
+    <Reference Include="System.Numerics" />
+    <Reference Include="System.Runtime.Serialization" />
     <Reference Include="System.Xml.Linq" />
     <Reference Include="System.Data.DataSetExtensions" />
     <Reference Include="Microsoft.CSharp" />

2018_08/2018_08.csproj

@@ -35,6 +35,8 @@
   <ItemGroup>
     <Reference Include="System" />
     <Reference Include="System.Core" />
+    <Reference Include="System.Numerics" />
+    <Reference Include="System.Runtime.Serialization" />
     <Reference Include="System.Xml.Linq" />
     <Reference Include="System.Data.DataSetExtensions" />
     <Reference Include="Microsoft.CSharp" />

2018_08/Program.cs

@@ -1,9 +1,7 @@
 using System;
+using System.Collections;
 using System.Collections.Generic;
 using System.IO;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 using static System.Console;
 
 namespace _2018_08
@@ -12,89 +10,225 @@ namespace _2018_08
     {
         static void Main(string[] args)
         {
-            //string[] resTab = File.ReadAllText(@"..\..\..\Data\Adventofcode_181208\2018_08_data.txt").Split(' ');
-            string[] resTab = @"2 3 0 3 10 11 12 1 1 0 1 99 2 1 1 2".Split(' ');
+            bool own = false;
+            int y = 0;
+            string[] resTab = File.ReadAllText(@"..\..\..\Data\Adventofcode_181208\2018_08_data.txt").Split(' ');
+            //string[] resTab = @"2 3 0 3 10 11 12 1 1 0 1 99 2 1 1 2 2 3 0 3 10 11 12 1 1 0 1 99 2 1 1 2".Split(' ');
+            //string[] resTab = @"2 3 2 1 2 3 1 1 0 2 1 2 3 0 3 4 5 6 7 8 9 0 4 10 11 12 13 14 2 2 0 3 15 16 17 0 2 18 19 20 21 22 23 24".Split(' '); own = true;
             int[] numbers = new int[resTab.Length];
             for (int i = 0; i < resTab.Length; i++)
             {
                 numbers[i] = int.Parse(resTab[i]);
             }
-            WriteLine($"Antal värden = {resTab.Length}");
+            if (own)
+            {
+                for (int z = 1; z < 25; z++)
+                {
+                    y += z;
+                }
+            }
+
+            Write($"Antal värden = {resTab.Length}");
+            if (own)
+            {
+                WriteLine($" svar = {y}");
+            }
+            else WriteLine();
+
             ReadKey();
 
             var pgm = new Program();
-            int x = pgm.CalculateMetaData(numbers);
 
+            int x = pgm.CalcMetaData(numbers);
+
+            WriteLine();
+            WriteLine($"summa = {x}");
+            ReadKey();
         }
 
-        private int CalculateMetaData(int[] numbers)
+         private int CalcMetaData(int[] nums)
         {
-            int tempSum = 0;
-            LinkedList<TreeNode> llT = new LinkedList<TreeNode>();
-            TreeNode strtNode = new TreeNode(0, numbers);
-            llT.AddLast(strtNode);
-            int headEnd = 0;
-            int firstAnt = strtNode.AntChilds;
-
-            TreeNode nxt = new TreeNode(strtNode.HeaderStart + 2, numbers);
-
-            for (int i = 0; i < firstAnt; i++)
+            int metaSum = 0;
+            TreeNode tnStart = new TreeNode(nums, null);
+            TreeNode tnTmp = tnStart;
+            TreeNode tnAkt = tnStart;
+            while (true)
             {
-                headEnd = this.SubProc(nxt, numbers, llT);
-                if (i < firstAnt - 1)
-                {
-                    nxt = new TreeNode(headEnd, numbers);
-                    llT.AddLast(nxt);
-                }
+                tnAkt = new TreeNode(nums, tnTmp);
+                tnTmp = tnAkt;
+                if (tnAkt.LC.Level < 0)
+                    break;
             }
 
-            return tempSum;
-        }
+            ReadKey();
 
-        private int SubProc(TreeNode tn, int[] numbers, LinkedList<TreeNode> ll)
-        {
-            int nEnd = 0;
-
-            if (tn.AntChilds > 0)
+            tnTmp = tnStart;
+            while (tnTmp!=null)
             {
-                int nAnt = tn.AntChilds;
-
-                for (int i = 0; i < nAnt; i++)
-                {
-                    var tnx = new TreeNode(tn.HeaderStart + 2, numbers);
-                    ll.AddLast(tnx);
-                    nEnd = SubProc(tnx, numbers, ll);
-                }
-                //nEnd -= (tnx.HeaderStart + 2);
+                tnTmp.PrepMetatab(tnTmp.NodeEnd);
+                WriteLine(tnTmp.ToString());
+                metaSum += tnTmp.MetaValueSum();
+                tnTmp = tnTmp.Next;
             }
 
-            tn.PrepMetatab(nEnd);
-            return tn.NodeEnd;
+            ReadKey();
+
+            return metaSum;
         }
 
     }
 
     public class TreeNode
     {
+        public int ObjNr { get; set; }
         public int HeaderStart { get; set; }
         public int AntChilds { get; set; }
+        public int ChildNo { get; set; }
         public int AntMetaEntries { get; set; }
         public int[] MetaTab { get; set; }
         public int NodeEnd { get; set; }
         public int[] NumberTab { get; set; }
+        public TreeNode Previous { get; set; }
+        public TreeNode Next { get; set; }
+        public LevelCount LC { get; set; }
+        static int nr;
+        int treeNodeStart = 0;
 
-        public TreeNode(int treeNodeStart, int[] NumTab)
+        public TreeNode(int[] NumTab, TreeNode tnPrev)
         {
+            TreeNode.nr++;
+            ObjNr = TreeNode.nr;
             NumberTab = NumTab;
-            HeaderStart = treeNodeStart;
-            AntChilds = NumberTab[HeaderStart];
-            AntMetaEntries = NumberTab[HeaderStart + 1];
-            NodeEnd = HeaderStart + 2 + AntMetaEntries;
+            LC = new LevelCount();
+            Previous = tnPrev;
+            if (Previous != null)
+            {
+                Previous.Next = this;
+            }
+            else
+            {
+                LC.Level = 0;
+                treeNodeStart = 0;
+            }
+            Next = null;
+            SetLevel();
+
+            if (LC.Level > -1)
+            {
+                HeaderStart = treeNodeStart;
+                AntChilds = NumberTab[HeaderStart];
+                AntMetaEntries = NumberTab[HeaderStart + 1];
+                NodeEnd = HeaderStart + 2 + AntMetaEntries;
+                WriteLine(this.ToString());
+            }
+
+        }
+
+        private void SetLevel()
+        {
+            TreeNode wrkTmp = this;
+
+            if (Previous != null)
+            {
+                if (Previous.AntChilds > 0)
+                {
+                    LC.Level = Previous.LC.Level + 1;
+                    LC.Nodes = Previous.AntChilds;
+                    ChildNo = 1;
+                    treeNodeStart = Previous.HeaderStart + 2;
+                }
+                else
+                {
+                    if (Previous.ChildNo < Previous.LC.Nodes)
+                    {
+                        LC.Level = Previous.LC.Level;
+                        LC.Nodes = Previous.LC.Nodes;
+                        ChildNo = Previous.ChildNo + 1;
+                        treeNodeStart = Previous.NodeEnd;
+                    }
+                    else
+                    {
+                        LC.Level = Previous.LC.Level - 1;
+
+                        if (FindStartOfObject(wrkTmp).ChildNo < FindStartOfObject(wrkTmp).LC.Nodes)
+                        {
+                            FindStartOfObject(wrkTmp).PrepMetatab(wrkTmp.Previous.NodeEnd + FindStartOfObject(wrkTmp).AntMetaEntries);
+                            treeNodeStart = FindStartOfObject(wrkTmp).NodeEnd;
+                            wrkTmp.ChildNo = FindStartOfObject(wrkTmp).ChildNo + 1;
+                            wrkTmp.LC.Nodes = FindHeadOfStartOfObject(wrkTmp).AntChilds;
+                        }
+                        else
+                        {
+                            int chld = FindStartOfObject(wrkTmp).ChildNo;
+                            int ndss = FindStartOfObject(wrkTmp).LC.Nodes;
+                            treeNodeStart = wrkTmp.Previous.NodeEnd;
+
+                            while (FindStartOfObject(wrkTmp).ChildNo == FindStartOfObject(wrkTmp).LC.Nodes && LC.Level > -1)
+                            {
+
+                                FindStartOfObject(wrkTmp).PrepMetatab(treeNodeStart + FindStartOfObject(wrkTmp).AntMetaEntries);
+                                treeNodeStart = FindStartOfObject(wrkTmp).NodeEnd;
+
+                                LC.Level = LC.Level - 1;
+
+                                chld = FindStartOfObject(wrkTmp).ChildNo;
+                                ndss = FindStartOfObject(wrkTmp).LC.Nodes;
+
+                            }
+                            if (LC.Level <= 0)
+                            {
+                                if (treeNodeStart >= NumberTab.Length)
+                                {
+                                    Previous.Next = null;
+                                }
+                                else
+                                {
+                                    LC.Level = 0;
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+
+        private TreeNode FindStartOfObject(TreeNode xTree)
+        {
+            TreeNode jmfTmp = this;
+            TreeNode srchTmp = Previous;
+
+            if (xTree != null)
+            {
+                jmfTmp = xTree;
+                srchTmp = xTree.Previous;
+            }
+            while (srchTmp.LC.Level > jmfTmp.LC.Level && srchTmp.Previous != null)
+            {
+                srchTmp = srchTmp.Previous;
+            }
+            return srchTmp;
+        }
+
+        private TreeNode FindHeadOfStartOfObject(TreeNode xTree)
+        {
+            TreeNode jmfTmp = this;
+            TreeNode srchTmp = Previous;
+            if (xTree != null)
+            {
+                jmfTmp = xTree;
+                srchTmp = xTree.Previous;
+            }
+
+            while (srchTmp.LC.Level >= this.LC.Level && srchTmp.Previous != null)
+            {
+                srchTmp = srchTmp.Previous;
+            }
+            return srchTmp;
         }
 
         public void PrepMetatab(int subLen)
         {
-            NodeEnd += subLen;
+            NodeEnd = subLen;
             MetaTab = new int[AntMetaEntries];
             for (int i = 0, j = NodeEnd - AntMetaEntries; j < NodeEnd; j++, i++)
             {
@@ -102,5 +236,43 @@ namespace _2018_08
             }
         }
 
+        public int MetaValueSum()
+        {
+            int tmpMetas = 0;
+            if (MetaTab != null)
+            {
+                for (int y = 0; y < AntMetaEntries; y++)
+                {
+                    tmpMetas += MetaTab[y];
+                }
+            }
+            else tmpMetas = -1;
+            return tmpMetas;
+        }
+
+        public override string ToString()
+        {
+            string retStr = $"Nr: {ObjNr}, Level: {LC.Level}, Child: {ChildNo} Start: {HeaderStart}, Subobj: {AntChilds}, Metafält: {AntMetaEntries}, Nodend: {NodeEnd}";
+            if (MetaTab != null)
+            {
+                for (int x = 0; x < AntMetaEntries; x++)
+                {
+                    retStr += $" meta[{x}]: {MetaTab[x]}";
+                }
+            }
+            return retStr;
+        }
+
+    }
+
+    public class LevelCount
+    {
+        public int Level { get; set; }
+        public int Nodes { get; set; }
+        public LevelCount()
+        {
+            Level = 0;
+            Nodes = 0;
+        }
     }
 }

TestProgram/App.config

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<configuration>
+    <startup> 
+        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.1" />
+    </startup>
+</configuration>

TestProgram/Program.cs

@@ -0,0 +1,234 @@
+using System;
+using System.Text;
+using System.Collections.Generic;
+
+namespace TestProgram
+{
+    public class Example
+    {
+        public static void Main()
+        {
+            // Create the link list.
+            string[] words =
+                { "the", "fox", "jumps", "over", "the", "dog" };
+            LinkedList<string> sentence = new LinkedList<string>(words);
+            Display(sentence, "The linked list values:");
+            Console.WriteLine("sentence.Contains(\"jumps\") = {0}",
+                sentence.Contains("jumps"));
+
+            // Add the word 'today' to the beginning of the linked list.
+            sentence.AddFirst("today");
+            Display(sentence, "Test 1: Add 'today' to beginning of the list:");
+
+            // Move the first node to be the last node.
+            LinkedListNode<string> mark1 = sentence.First;
+            sentence.RemoveFirst();
+            sentence.AddLast(mark1);
+            Display(sentence, "Test 2: Move first node to be last node:");
+
+            // Change the last node to 'yesterday'.
+            sentence.RemoveLast();
+            sentence.AddLast("yesterday");
+            Display(sentence, "Test 3: Change the last node to 'yesterday':");
+
+            // Move the last node to be the first node.
+            mark1 = sentence.Last;
+            sentence.RemoveLast();
+            sentence.AddFirst(mark1);
+            Display(sentence, "Test 4: Move last node to be first node:");
+
+
+            // Indicate the last occurence of 'the'.
+            sentence.RemoveFirst();
+            LinkedListNode<string> current = sentence.FindLast("the");
+            IndicateNode(current, "Test 5: Indicate last occurence of 'the':");
+
+            // Add 'lazy' and 'old' after 'the' (the LinkedListNode named current).
+            sentence.AddAfter(current, "old");
+            sentence.AddAfter(current, "lazy");
+            IndicateNode(current, "Test 6: Add 'lazy' and 'old' after 'the':");
+
+            // Indicate 'fox' node.
+            current = sentence.Find("fox");
+            IndicateNode(current, "Test 7: Indicate the 'fox' node:");
+
+            // Add 'quick' and 'brown' before 'fox':
+            sentence.AddBefore(current, "quick");
+            sentence.AddBefore(current, "brown");
+            IndicateNode(current, "Test 8: Add 'quick' and 'brown' before 'fox':");
+
+            // Keep a reference to the current node, 'fox',
+            // and to the previous node in the list. Indicate the 'dog' node.
+            mark1 = current;
+            LinkedListNode<string> mark2 = current.Previous;
+            current = sentence.Find("dog");
+            IndicateNode(current, "Test 9: Indicate the 'dog' node:");
+
+            // The AddBefore method throws an InvalidOperationException
+            // if you try to add a node that already belongs to a list.
+            Console.WriteLine("Test 10: Throw exception by adding node (fox) already in the list:");
+            try
+            {
+                sentence.AddBefore(current, mark1);
+            }
+            catch (InvalidOperationException ex)
+            {
+                Console.WriteLine("Exception message: {0}", ex.Message);
+            }
+            Console.WriteLine();
+
+            // Remove the node referred to by mark1, and then add it
+            // before the node referred to by current.
+            // Indicate the node referred to by current.
+            sentence.Remove(mark1);
+            sentence.AddBefore(current, mark1);
+            IndicateNode(current, "Test 11: Move a referenced node (fox) before the current node (dog):");
+
+            // Remove the node referred to by current.
+            sentence.Remove(current);
+            IndicateNode(current, "Test 12: Remove current node (dog) and attempt to indicate it:");
+
+            // Add the node after the node referred to by mark2.
+            sentence.AddAfter(mark2, current);
+            IndicateNode(current, "Test 13: Add node removed in test 11 after a referenced node (brown):");
+
+            // The Remove method finds and removes the
+            // first node that that has the specified value.
+            sentence.Remove("old");
+            Display(sentence, "Test 14: Remove node that has the value 'old':");
+
+            // When the linked list is cast to ICollection(Of String),
+            // the Add method adds a node to the end of the list.
+            sentence.RemoveLast();
+            ICollection<string> icoll = sentence;
+            icoll.Add("rhinoceros");
+            Display(sentence, "Test 15: Remove last node, cast to ICollection, and add 'rhinoceros':");
+
+            Console.WriteLine("Test 16: Copy the list to an array:");
+            // Create an array with the same number of
+            // elements as the inked list.
+            string[] sArray = new string[sentence.Count];
+            sentence.CopyTo(sArray, 0);
+
+            foreach (string s in sArray)
+            {
+                Console.WriteLine(s);
+            }
+
+            // Release all the nodes.
+            sentence.Clear();
+
+            Console.WriteLine();
+            Console.WriteLine("Test 17: Clear linked list. Contains 'jumps' = {0}",
+                sentence.Contains("jumps"));
+
+            Console.ReadLine();
+        }
+
+        private static void Display(LinkedList<string> words, string test)
+        {
+            Console.WriteLine(test);
+            foreach (string word in words)
+            {
+                Console.Write(word + " ");
+            }
+            Console.WriteLine();
+            Console.WriteLine();
+        }
+
+        private static void IndicateNode(LinkedListNode<string> node, string test)
+        {
+            Console.WriteLine(test);
+            if (node.List == null)
+            {
+                Console.WriteLine("Node '{0}' is not in the list.\n",
+                    node.Value);
+                return;
+            }
+
+            StringBuilder result = new StringBuilder("(" + node.Value + ")");
+            LinkedListNode<string> nodeP = node.Previous;
+
+            while (nodeP != null)
+            {
+                result.Insert(0, nodeP.Value + " ");
+                nodeP = nodeP.Previous;
+            }
+
+            node = node.Next;
+            while (node != null)
+            {
+                result.Append(" " + node.Value);
+                node = node.Next;
+            }
+
+            Console.WriteLine(result);
+            Console.WriteLine();
+        }
+    }
+
+    //This code example produces the following output:
+    //
+    //The linked list values:
+    //the fox jumps over the dog
+
+    //Test 1: Add 'today' to beginning of the list:
+    //today the fox jumps over the dog
+
+    //Test 2: Move first node to be last node:
+    //the fox jumps over the dog today
+
+    //Test 3: Change the last node to 'yesterday':
+    //the fox jumps over the dog yesterday
+
+    //Test 4: Move last node to be first node:
+    //yesterday the fox jumps over the dog
+
+    //Test 5: Indicate last occurence of 'the':
+    //the fox jumps over (the) dog
+
+    //Test 6: Add 'lazy' and 'old' after 'the':
+    //the fox jumps over (the) lazy old dog
+
+    //Test 7: Indicate the 'fox' node:
+    //the (fox) jumps over the lazy old dog
+
+    //Test 8: Add 'quick' and 'brown' before 'fox':
+    //the quick brown (fox) jumps over the lazy old dog
+
+    //Test 9: Indicate the 'dog' node:
+    //the quick brown fox jumps over the lazy old (dog)
+
+    //Test 10: Throw exception by adding node (fox) already in the list:
+    //Exception message: The LinkedList node belongs a LinkedList.
+
+    //Test 11: Move a referenced node (fox) before the current node (dog):
+    //the quick brown jumps over the lazy old fox (dog)
+
+    //Test 12: Remove current node (dog) and attempt to indicate it:
+    //Node 'dog' is not in the list.
+
+    //Test 13: Add node removed in test 11 after a referenced node (brown):
+    //the quick brown (dog) jumps over the lazy old fox
+
+    //Test 14: Remove node that has the value 'old':
+    //the quick brown dog jumps over the lazy fox
+
+    //Test 15: Remove last node, cast to ICollection, and add 'rhinoceros':
+    //the quick brown dog jumps over the lazy rhinoceros
+
+    //Test 16: Copy the list to an array:
+    //the
+    //quick
+    //brown
+    //dog
+    //jumps
+    //over
+    //the
+    //lazy
+    //rhinoceros
+
+    //Test 17: Clear linked list. Contains 'jumps' = False
+    //
+
+}

TestProgram/Properties/AssemblyInfo.cs

@@ -0,0 +1,36 @@
+using System.Reflection;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
+// General Information about an assembly is controlled through the following
+// set of attributes. Change these attribute values to modify the information
+// associated with an assembly.
+[assembly: AssemblyTitle("TestProgram")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("TestProgram")]
+[assembly: AssemblyCopyright("Copyright ©  2019")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// Setting ComVisible to false makes the types in this assembly not visible
+// to COM components.  If you need to access a type in this assembly from
+// COM, set the ComVisible attribute to true on that type.
+[assembly: ComVisible(false)]
+
+// The following GUID is for the ID of the typelib if this project is exposed to COM
+[assembly: Guid("3c619b27-1f67-4151-bfd2-af0dec322297")]
+
+// Version information for an assembly consists of the following four values:
+//
+//      Major Version
+//      Minor Version
+//      Build Number
+//      Revision
+//
+// You can specify all the values or you can default the Build and Revision Numbers
+// by using the '*' as shown below:
+// [assembly: AssemblyVersion("1.0.*")]
+[assembly: AssemblyVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.0")]

TestProgram/TestProgram.csproj

@@ -0,0 +1,53 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProjectGuid>{3C619B27-1F67-4151-BFD2-AF0DEC322297}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <RootNamespace>TestProgram</RootNamespace>
+    <AssemblyName>TestProgram</AssemblyName>
+    <TargetFrameworkVersion>v4.6.1</TargetFrameworkVersion>
+    <FileAlignment>512</FileAlignment>
+    <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
+    <Deterministic>true</Deterministic>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <PlatformTarget>AnyCPU</PlatformTarget>
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <PlatformTarget>AnyCPU</PlatformTarget>
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="System" />
+    <Reference Include="System.Core" />
+    <Reference Include="System.Xml.Linq" />
+    <Reference Include="System.Data.DataSetExtensions" />
+    <Reference Include="Microsoft.CSharp" />
+    <Reference Include="System.Data" />
+    <Reference Include="System.Net.Http" />
+    <Reference Include="System.Xml" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="Program.cs" />
+    <Compile Include="Properties\AssemblyInfo.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="App.config" />
+  </ItemGroup>
+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+</Project>