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Decode the Coding Interview in Ruby: Real-World Examples

DIY: Maximum Frequency Stack

Explore how to implement a maximum frequency stack with push and pop operations. Understand managing elements by frequency and recency to solve this coding challenge effectively.

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Problem statement

Design a stack-like data structure. We should be able to push elements to this data structure and pop elements with maximum frequency.

You have to implement the FreqStack class:

  • class FreqStack declare a frequency stack
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