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Binary Tree Inorder Traversal

Easy

RecursionStackTrees

Problem

Problem

Given the root of a binary tree, return a list of its node values in inorder traversal order. The input is the root node (or null for an empty tree), and the output is an array of integers visited in the order: left subtree, current node, right subtree.

Constraints

0 <= number of nodes <= 10^4
-10^4 <= Node.val <= 10^4
The tree may be empty
A recursive or iterative DFS solution is acceptable

Problem

Problem

Given the root of a binary tree, return a list of its node values in inorder traversal order. The input is the root node (or null for an empty tree), and the output is an array of integers visited in the order: left subtree, current node, right subtree.

Constraints

0 <= number of nodes <= 10^4
-10^4 <= Node.val <= 10^4
The tree may be empty
A recursive or iterative DFS solution is acceptable

Practice Python

Python 3.10

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