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Bogdan Hladiuc
committed
Day 8 Binary Tree To Double Linked List Q426
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+299
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10 files changed

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‎Formation/21_Days_Challenge/Day_8_TreeToList_Q426/Day_8_TreeToList_Q426.csproj

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<Project Sdk="Microsoft.NET.Sdk">
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<ItemGroup>
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<ProjectReference Include="..\..\..\Library\Library.csproj" />
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</ItemGroup>
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<PropertyGroup>
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<TargetFramework>net6.0</TargetFramework>
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<ImplicitUsings>enable</ImplicitUsings>
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<Nullable>enable</Nullable>
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</PropertyGroup>
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</Project>

‎Formation/21_Days_Challenge/Day_8_TreeToList_Q426/TreeToDoubleLinkedList.cs

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#nullable disable warnings
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using Library;
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namespace Formation {
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public class TreeToDoubleLinkedList {
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public static void Run() {
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var root = new TreeNode(1, null, null);
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root.Left = new TreeNode(2, null, null);
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root.Right = new TreeNode(3, null, null);
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root.Left.Left = new TreeNode(4, null, null);
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root.Left.Right = new TreeNode(5, null, null);
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root.Right.Left = new TreeNode(6, null, null);
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root.Right.Right = new TreeNode(7, null, null);
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// root.Print();
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var result = Solution(root);
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// result.Print();
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}
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private static TreeNode Solution(TreeNode root) {
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if (root == null) {
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return root;
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}
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TreeNode first = null;
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TreeNode last = null;
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var stack = new Stack<TreeNode>();
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while (root != null || stack.Count > 0) {
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while (root != null) {
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stack.Push(root);
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root = root.Left;
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}
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root = stack.Pop();
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if (first == null) {
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first = root;
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}
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if (last != null) {
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last.Right = root;
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root.Left = last;
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}
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last = root;
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root = root.Right;
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}
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last.Right = first;
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first.Left = last;
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return first;
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}
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}
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}

‎LeetcodeNew.sln

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@@ -99,6 +99,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Day_6_Search_In_Matrix_Q240
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EndProject
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Day_7_Palindrome_Anagram", "Formation\21_Days_Challenge\Day_7_Palindrome_Anagram\Day_7_Palindrome_Anagram.csproj", "{F4A8CB4B-D714-46CB-8D5E-B7585A9A969A}"
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EndProject
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Day_8_TreeToList_Q426", "Formation\21_Days_Challenge\Day_8_TreeToList_Q426\Day_8_TreeToList_Q426.csproj", "{6A1132F8-3D68-468D-AEB9-4B965EC7CC59}"
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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Debug|Any CPU = Debug|Any CPU
@@ -664,6 +666,18 @@ Global
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{F4A8CB4B-D714-46CB-8D5E-B7585A9A969A}.Release|x64.Build.0 = Release|Any CPU
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{F4A8CB4B-D714-46CB-8D5E-B7585A9A969A}.Release|x86.ActiveCfg = Release|Any CPU
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{F4A8CB4B-D714-46CB-8D5E-B7585A9A969A}.Release|x86.Build.0 = Release|Any CPU
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{6A1132F8-3D68-468D-AEB9-4B965EC7CC59}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{6A1132F8-3D68-468D-AEB9-4B965EC7CC59}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{6A1132F8-3D68-468D-AEB9-4B965EC7CC59}.Debug|x64.ActiveCfg = Debug|Any CPU
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{6A1132F8-3D68-468D-AEB9-4B965EC7CC59}.Debug|x64.Build.0 = Debug|Any CPU
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{6A1132F8-3D68-468D-AEB9-4B965EC7CC59}.Debug|x86.ActiveCfg = Debug|Any CPU
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{6A1132F8-3D68-468D-AEB9-4B965EC7CC59}.Debug|x86.Build.0 = Debug|Any CPU
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{6A1132F8-3D68-468D-AEB9-4B965EC7CC59}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{6A1132F8-3D68-468D-AEB9-4B965EC7CC59}.Release|Any CPU.Build.0 = Release|Any CPU
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{6A1132F8-3D68-468D-AEB9-4B965EC7CC59}.Release|x64.ActiveCfg = Release|Any CPU
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{6A1132F8-3D68-468D-AEB9-4B965EC7CC59}.Release|x64.Build.0 = Release|Any CPU
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{6A1132F8-3D68-468D-AEB9-4B965EC7CC59}.Release|x86.ActiveCfg = Release|Any CPU
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{6A1132F8-3D68-468D-AEB9-4B965EC7CC59}.Release|x86.Build.0 = Release|Any CPU
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EndGlobalSection
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GlobalSection(NestedProjects) = preSolution
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{45EB27A3-9FBB-48ED-8C89-E0F074C02E8C} = {71C7D88B-6D5D-4E25-A275-869603700831}
@@ -674,5 +688,6 @@ Global
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{544EBBCF-F78C-46C0-8C1B-E3D4760ECD18} = {45EB27A3-9FBB-48ED-8C89-E0F074C02E8C}
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{D932B4EA-845D-48B3-ADFD-C9EBD3E6232A} = {45EB27A3-9FBB-48ED-8C89-E0F074C02E8C}
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{F4A8CB4B-D714-46CB-8D5E-B7585A9A969A} = {45EB27A3-9FBB-48ED-8C89-E0F074C02E8C}
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{6A1132F8-3D68-468D-AEB9-4B965EC7CC59} = {45EB27A3-9FBB-48ED-8C89-E0F074C02E8C}
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EndGlobalSection
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EndGlobal

‎Library/BTreePrinter.cs

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#nullable disable warnings
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using System;
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using System.Collections.Generic;
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namespace Library {
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public static class BTreePrinter {
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class NodeInfo {
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public TreeNode Node;
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public string Text;
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public int StartPos;
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public int Size { get { return Text.Length; } }
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public int EndPos { get { return StartPos + Size; } set { StartPos = value - Size; } }
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public NodeInfo Parent, Left, Right;
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}
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public static void Print(this TreeNode root, string textFormat = "0", int spacing = 1, int topMargin = 2, int leftMargin = 2) {
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if (root == null) return;
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int rootTop = Console.CursorTop + topMargin;
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var last = new List<NodeInfo>();
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var next = root;
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for (int level = 0; next != null; level++) {
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var item = new NodeInfo { Node = next, Text = next.Val.ToString(textFormat) };
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if (level < last.Count) {
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item.StartPos = last[level].EndPos + spacing;
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last[level] = item;
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} else {
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item.StartPos = leftMargin;
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last.Add(item);
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}
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if (level > 0) {
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item.Parent = last[level - 1];
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if (next == item.Parent.Node.Left) {
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item.Parent.Left = item;
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item.EndPos = Math.Max(item.EndPos, item.Parent.StartPos - 1);
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} else {
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item.Parent.Right = item;
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item.StartPos = Math.Max(item.StartPos, item.Parent.EndPos + 1);
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}
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}
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next = next.Left ?? next.Right;
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for (; next == null; item = item.Parent) {
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int top = rootTop + 2 * level;
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Print(item.Text, top, item.StartPos);
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if (item.Left != null) {
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Print("/", top + 1, item.Left.EndPos);
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Print("_", top, item.Left.EndPos + 1, item.StartPos);
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}
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if (item.Right != null) {
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Print("_", top, item.EndPos, item.Right.StartPos - 1);
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Print("\\", top + 1, item.Right.StartPos - 1);
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}
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if (--level < 0) break;
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if (item == item.Parent.Left) {
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item.Parent.StartPos = item.EndPos + 1;
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next = item.Parent.Node.Right;
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} else {
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if (item.Parent.Left == null)
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item.Parent.EndPos = item.StartPos - 1;
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else
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item.Parent.StartPos += (item.StartPos - 1 - item.Parent.EndPos) / 2;
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}
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}
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}
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Console.SetCursorPosition(0, rootTop + 2 * last.Count - 1);
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}
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private static void Print(string s, int top, int left, int right = -1) {
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Console.SetCursorPosition(left, top);
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if (right < 0) right = left + s.Length;
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while (Console.CursorLeft < right) Console.Write(s);
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}
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}
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}

‎Library/DoubleLinkedListNode.cs

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using System.Diagnostics;
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using System.Text;
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namespace Library {
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[DebuggerDisplay("{Val}")]
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public class DoubleLinkedListNode {
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public int Val { get; set; }
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public DoubleLinkedListNode? Next { get; set; }
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public DoubleLinkedListNode? Prev { get; set; }
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public DoubleLinkedListNode() {
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Val = 0;
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Next = null;
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Prev = null;
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}
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public DoubleLinkedListNode(int val, DoubleLinkedListNode next, DoubleLinkedListNode prev) {
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Val = val;
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Next = next;
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Prev = prev;
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}
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public void Print() {
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var sb = new StringBuilder();
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var curr = this;
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if (curr != null) {
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sb.Append($"{curr.Val} ⇆ ");
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curr = curr.Next;
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}
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while (curr != this && curr != null) {
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sb.Append($"{curr.Val} ⇆ ");
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curr = curr.Next;
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}
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if (sb.Length > 0) {
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sb.Length = sb.Length - 3;
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}
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Console.WriteLine(sb.ToString());
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}
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}
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}

‎Run/Program.cs

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@@ -4,13 +4,14 @@ static void Main(string[] args) {
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#region Formation
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7-
// Formation.DeleteMiddleNode.Run(); // Day 1
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// Formation.SpiralTraversal.Run(); // Day 2
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// Formation.ReverseKGroup.Run(); // Day 3
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// Formation.ToeplitzMatrix.Run(); // Day 4
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// Formation.MonotonicMatrix.Run(); // Day 5
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// Formation.SearchInMatrix.Run(); // Day 6
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Formation.PalindromeAnagram.Run(); // Day 7
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// Formation.DeleteMiddleNode.Run(); // Day 1
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// Formation.SpiralTraversal.Run(); // Day 2
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// Formation.ReverseKGroup.Run(); // Day 3
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// Formation.ToeplitzMatrix.Run(); // Day 4
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// Formation.MonotonicMatrix.Run(); // Day 5
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// Formation.SearchInMatrix.Run(); // Day 6
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// Formation.PalindromeAnagram.Run(); // Day 7
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Formation.TreeToDoubleLinkedList.Run(); // Day 8
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#endregion Formation
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‎Run/Run.csproj

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<ProjectReference Include="..\Formation\21_Days_Challenge\Day_5_Monotonic_Matrix\Day_5_Monotonic_Matrix.csproj" />
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<ProjectReference Include="..\Formation\21_Days_Challenge\Day_6_Search_In_Matrix_Q240\Day_6_Search_In_Matrix_Q240.csproj" />
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<ProjectReference Include="..\Formation\21_Days_Challenge\Day_7_Palindrome_Anagram\Day_7_Palindrome_Anagram.csproj" />
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<ProjectReference Include="..\Formation\21_Days_Challenge\Day_8_TreeToList_Q426\Day_8_TreeToList_Q426.csproj" />
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</ItemGroup>
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<PropertyGroup>

‎Run/obj/Run.csproj.nuget.dgspec.json

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@@ -2558,6 +2614,9 @@
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"/Users/Bogdan/Documents/Work/CtCI/VS_Code/LeetcodeNew/Formation/21_Days_Challenge/Day_7_Palindrome_Anagram/Day_7_Palindrome_Anagram.csproj": {
25592615
"projectPath": "/Users/Bogdan/Documents/Work/CtCI/VS_Code/LeetcodeNew/Formation/21_Days_Challenge/Day_7_Palindrome_Anagram/Day_7_Palindrome_Anagram.csproj"
25602616
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"/Users/Bogdan/Documents/Work/CtCI/VS_Code/LeetcodeNew/Formation/21_Days_Challenge/Day_8_TreeToList_Q426/Day_8_TreeToList_Q426.csproj": {
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"projectPath": "/Users/Bogdan/Documents/Work/CtCI/VS_Code/LeetcodeNew/Formation/21_Days_Challenge/Day_8_TreeToList_Q426/Day_8_TreeToList_Q426.csproj"
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‎Run/obj/project.assets.json

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Original file line numberDiff line numberDiff line change
@@ -106,6 +106,19 @@
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"Day_8_TreeToList_Q426/1.0.0": {
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113+
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114+
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115+
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116+
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119+
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110123
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@@ -592,6 +605,11 @@
592605
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594607
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610+
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611+
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596614
"type": "project",
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"path": "../Library/Library.csproj",
@@ -793,6 +811,7 @@
793811
"Day_5_Monotonic_Matrix >= 1.0.0",
794812
"Day_6_Search_In_Matrix_Q240 >= 1.0.0",
795813
"Day_7_Palindrome_Anagram >= 1.0.0",
814+
"Day_8_TreeToList_Q426 >= 1.0.0",
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"Library >= 1.0.0",
797816
"Q10_Regular_Expression_Matching >= 1.0.0",
798817
"Q1249_Minimum_Remove_To_Make_Valid_Parentheses >= 1.0.0",
@@ -882,6 +901,9 @@
882901
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884903
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904+
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905+
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906+
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885907
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886908
"projectPath": "/Users/Bogdan/Documents/Work/CtCI/VS_Code/LeetcodeNew/Library/Library.csproj"
887909
},

‎Run/obj/project.nuget.cache

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
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