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All O`one Data Structure

Explore the design and implementation of the AllOne data structure to efficiently track frequencies of string keys. Learn to perform increments, decrements, and retrieve keys with max or min counts—all in average constant time. This lesson helps you understand custom data structure creation to solve specialized frequency-tracking problems.

Statement

Design a data structure that tracks the frequency of string keys and allows for efficient updates and queries.

Implement the AllOne class with these methods:

  • Constructor: Initializes the data structure.

  • inc(String key): Increases the count of the given key by 11. If the key is absent, insert it with a count of 11 ...