Find value on most distinct levels

Q: Find value on most distinct levels

This question evaluates a candidate's understanding of binary tree structures, level-wise aggregation and frequency analysis, along with algorithm design and complexity reasoning.

Q: How do I approach Coding & Algorithms interview questions?

Coding & Algorithms questions require understanding of core concepts and practice. PracHub provides solutions with explanations to help you master coding & algorithms interviews.

Question

Given a binary tree whose nodes store values (e.g., characters), find the value that appears on the greatest number of distinct depth levels. For example, for the tree: A /
A B /
C C the answer is 'A' because it appears on two different levels (levels 1 and 2). Describe an algorithm, justify its correctness, and analyze its time and space complexity.

Find value on most distinct levels

Overview

Comments (0)