Day10

94. Binary Tree Inorder Traversal/94. Binary Tree Inorder Traversal.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+    <RootNamespace>_94._Binary_Tree_Inorder_Traversal</RootNamespace>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

94. Binary Tree Inorder Traversal/Program.cs

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+namespace _94._Binary_Tree_Inorder_Traversal;
+
+internal class Program
+{
+    static void Main(string[] args)
+    {
+        Console.WriteLine("Hello, World!");
+    }
+}

94. Binary Tree Inorder Traversal/Solution.cs

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+namespace _94._Binary_Tree_Inorder_Traversal;
+
+public class Solution
+{
+    public List<int> inorderTraversal(TreeNode root)
+    {
+        List<int> res = new List<int>();
+        Stack<TreeNode> stack = new Stack<TreeNode>();
+        TreeNode? curr = root;
+        while (curr != null || stack.Count > 0)
+        {
+            while (curr != null)
+            {
+                stack.Push(curr);
+                curr = curr.left;
+            }
+            curr = stack.Pop();
+            res.Add(curr.val);
+            curr = curr.right!;
+        }
+        return res;
+    }
+}

94. Binary Tree Inorder Traversal/TreeNode.cs

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+namespace _94._Binary_Tree_Inorder_Traversal;
+
+//Definition for a binary tree node.
+public class TreeNode
+{
+    public int val;
+    public TreeNode? left;
+    public TreeNode? right;
+    public TreeNode(int val = 0, TreeNode? left = null, TreeNode? right = null)
+    {
+        this.val = val;
+        this.left = left;
+        this.right = right;
+    }
+}