LeetCode 102: Level Order Traversal | JavaScript BFS Solution
Автор: Crappy Coder
Загружено: 2025-05-10
Просмотров: 23
Описание:
In this video, I walk through LeetCode 102: Binary Tree Level Order Traversal, solving it using a Breadth-First Search (BFS) approach in JavaScript.
The goal is to return a list of values level-by-level from a binary tree. I explain how to use a queue to track nodes level-by-level, collect their values, and push their children to the queue in order.
This is a classic BFS application and an essential pattern for any tree-based coding interview.
What You’ll Learn:
✅ How to use BFS for tree traversal
✅ Why a queue is ideal for level-order problems
✅ How to track levels cleanly in JS
✅ Time and space complexity breakdown
Chapters:
0:00 - Question
1:16 - What Is Level Order Traversal?
3:08 - Solution Explanation / Breakdown
6:20 - Code Solution
💬 Want to see the recursive (DFS) version of level order? Let me know in the comments!
#leetcode #binarytree #levelorder #javascript #leetcode102 #bfs #treeproblems #codinginterview #datastructures #queuealgorithm
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