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Decode the Coding Interview in Kotlin: Real-World Examples

DIY: Maximum Frequency Stack

Explore how to implement a frequency-based stack where elements can be pushed and the most frequent item can be popped. Understand the logic behind managing frequencies and resolving ties by recentness. This lesson helps you build a FreqStack class with push and pop functions to enhance problem-solving skills in coding interviews.

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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:

  • FreqStack struct declare a frequency stack
  • Constructor()
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