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All O`one Data Structure

Explore how to implement the AllOne data structure that supports constant-time increment, decrement, and retrieval of string keys by frequency. This lesson helps you understand how to efficiently manage frequency counts and query maximum or minimum keys, improving your skills in custom data structures crucial for coding interviews.

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 ...