DFS explained Step by Step Dry Run | Depth First Search Binary Tree | Leetcode

Watch a complete step-by-step dry run of Depth First Search (DFS) on a 7-node binary tree — with live Java code highlighting, animated node traversal, and a real-time visited array. Every step shows exactly which node gets popped, which children get pushed, and why the order is always left-subtree first. Perfect for DSA interview prep, LeetCode tree problems, and understanding iterative DFS without recursion.
👉 Key Concepts Covered:
— Iterative DFS using a Stack (Deque / ArrayDeque in Java)
— Why right child is pushed BEFORE left child
— Pre-order traversal: root → left → right
— Time Complexity: O(n) | Space Complexity: O(h)
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DFS LeetCode Problems- https://leetcode.com/problem-list/depth-first-search/

Видео DFS explained Step by Step Dry Run | Depth First Search Binary Tree | Leetcode канала CodeArc