The first step was an online coding round hosted on [HackerRank / Codility / company’s own portal].
Duration: 90 minutes
Questions: 3
Topics covered:
Data Structures & Algorithms – Implement LRU Cache (focus on O(1) operations using LinkedHashMap or custom doubly linked list + hashmap).
String Manipulation – Find the smallest substring containing all characters of another string (Sliding Window technique).
