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Grokking the Coding Interview Patterns in C++

Longest Path With Different Adjacent Characters

Explore how to determine the longest path in a rooted tree where consecutive nodes have different characters. Understand the problem constraints, use tree representation with parent arrays, and apply logical steps to solve the problem efficiently. Practice implementing your own solution in a coding playground.

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Statement

You are given a rooted tree with nn nodes, numbered from 00 to n−1n - 1, where the tree is connected, undirected, and has no cycles. The tree is represented by a 0-indexed array parent of size nn, where parent[i] is the parent of node ...