What is the depth of [3,9,20,null,null,15,7]?
Practice this question from Maximum Depth of Binary Tree - Height recursion Pattern Practice Quiz, with options and an explanation.
Question
What is the depth of [3,9,20,null,null,15,7]?
Option A — Correct answer
3
Option B
2
Option C
4
Option D
7
Explanation
The maximum depth is 3.