Solution: Maximum Frequency Stack
Explore how to design a frequency stack in Go that efficiently tracks and retrieves the most frequent element. Understand the use of hash maps and stacks to achieve O(1) push and pop operations, and learn to handle tie situations by returning the most recently added element among those with maximum frequency. This lesson guides you through both naive and optimized approaches with time and space complexity considerations.
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 struct that should consist of the following:
-
FreqStack: This is a struct used to declare a frequency stack.
-
Push(value): This is used to push an integer data onto the top of the stack.
-
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:
-
value -
At most, ...