Maximum Depth of Nested Array | JavaScript Interview Question

In this video, we solve one of the most common JavaScript interview questions: Find the Maximum Depth of a Nested Array. This problem is an excellent introduction to Recursion and Depth First Search (DFS). Instead of solving a LeetCode problem, we'll solve a real JavaScript interview question that is frequently asked in frontend and full-stack interviews. Topics Covered: Understanding Nested Arrays What is Maximum Depth? Recursion Explained Depth First Search (DFS) Step-by-Step Dry Run Visual Tree Representation Time Complexity Analysis Space Complexity Analysis Interview Tips Problem: Given a nested array, return its maximum depth. Examples: Input: [1,2,3] Output: 1 Input: [1,[2,3],4] Output: 2 Input: [1,[2,[3,[4]],5]] Output: 4 Algorithm Used: Recursion Depth First Search (DFS) Time Complexity: O(n) Space Complexity: O(d) where d is the maximum depth of the nested array. Language: JavaScript Interview Tip: Whenever you encounter nested arrays, nested objects, tree structures, DOM traversal, or folder hierarchies, Recursion is often the most natural solution. This video is part of the JavaScript Interview Questions Playlist, where we solve real interview questions commonly asked in frontend, React, React Native, and full-stack developer interviews. #javascript #recursion #frontendinterview #javascriptinterview #codinginterview #webdevelopment