Leetcode Problem 460. LFU Cache

460. LFU Cache

Leetcode Solutions

Initialize the LFUCache with a given capacity.
For get(key), check if the key exists in the cache. If not, return -1. If it does, increment the frequency, update the minimum frequency if needed, and return the value.
For put(key, value), if the key exists, update the value and frequency. If the cache is at capacity, remove the least frequently and least recently used key. Insert the new key with frequency 1.
To insert a key, add it to the cache with its frequency and value, and update the frequencies map and minf as needed.

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