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Grokking the Coding Interview Patterns in C#

All O`one Data Structure

Explore how to implement the AllOne data structure that efficiently tracks frequencies of string keys. Learn to perform constant-time increments, decrements, and retrieve keys with the highest and lowest counts. This lesson helps you build a custom data structure to solve frequency-related problems with optimal time complexity.

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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. If the key is absent, insert it with a count of 11 ...