InterviewDigestTechnical2026-08-16
Create a data structure with O(1) time for insert, delete, contains, and get random
AI-Expanded — inferred from the question title, not from the original candidate report
Design a data structure that supports the insertion, deletion, and lookup of elements in average O(1) time complexity. Additionally, implement a method that returns a uniformly random element from the current collection, ensuring that each element has an equal probability of being selected in O(1) time.
Context & Summary
Technical Round with questions on project and data structures
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