LFU Cache at Salesforce

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This problem has 75.0% frequency at Salesforce.

Problem Description

Design and implement a data structure for a [Least Frequently Used (LFU)](<https://en.wikipedia.org/wiki/Least_frequently_used>) cache. Implement the `LFUCache` class: * `LFUCache(int capacity)` Initializes the object with the `capacity` of the data structure. * `int get(int key)` Gets the val...

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