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Grokking the Coding Interview Patterns in Python

Solution: All O`one Data Structure

Explore how to design and implement the AllOne data structure that efficiently tracks string key frequencies with constant time operations for incrementing, decrementing, and retrieving keys with maximum and minimum counts using custom doubly linked lists and hash maps.

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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 ...