2671. Frequency Tracker

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Design a data structure that keeps track of the values in it and answers some queries regarding their frequencies. Implement the FrequencyTracker class. - FrequencyTracker(): Initializes the FrequencyTracker object with an empty array initially. - void add(int number): Adds number to the data structure. - void deleteOne(int number): Deletes one occurrence of number from the data structure. The

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solution.cppC++17

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