Quick Overview

This question evaluates a candidate's ability to design and implement efficient data structures for caching, including understanding frequency-based eviction policies, maintaining recency ordering for tie-breaking, and meeting strict time-complexity guarantees.

Implement an LFU cache with O(1) operations

Company: Salesforce

Role: Software Engineer

Category: Coding & Algorithms

Difficulty: medium

Interview Round: Onsite

Overview: This question evaluates a candidate's ability to design and implement efficient data structures for caching, including understanding frequency-based eviction policies, maintaining recency ordering for tie-breaking, and meeting strict time-complexity guarantees.

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