IPv4 CIDR Range Membership Queries
Company: Databricks
Role: Software Engineer
Category: Coding & Algorithms
Difficulty: medium
Interview Round: Onsite
Overview: This question evaluates a candidate's ability to design an efficient longest-prefix-match lookup structure for IP address ranges, a core networking and algorithms concept. It tests bit manipulation, trie or interval-based indexing, and reasoning about overlapping ranges under scale constraints. Such questions are common in coding interviews to assess practical application of data structure design beyond basic array or hash-map solutions.