Solution: Maximum Frequency Stack
Explore how to design and implement a frequency stack data structure that supports pushing elements and popping the most frequent one. Understand both naive and optimized approaches using frequency counting and hash maps to achieve O(1) time complexity for push and pop operations. This lesson helps you apply these concepts to solve coding interview questions effectively.
Statement
Design a stack-like data structure. You should be able to push elements to this data structure and pop elements with maximum frequency.
You’ll need to implement the FreqStack class that should consist of the following:
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FreqStack: This is a class used to declare a frequency stack.
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Push(value): This is used to push an integer data onto the top of the stack.
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Pop(): This is used to remove and return the most frequent element in the stack.
Note: If there is a tie for the most frequent element, then the most recently pushed element is removed and returned.
Constraints:
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value -
At most, ...