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Solution: All O`one Data Structure

Explore how to design and implement the AllOne data structure using a custom doubly linked list and hash maps to enable constant-time updates and queries of string key frequencies. Understand the methods inc, dec, getMaxKey, and getMinKey to efficiently manage frequency-based operations and maintain optimal performance.

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 ...