Leetcode Problem 460. LFU Cache
Leetcode Solutions
Maintaining Two HashMaps for LFU Cache
- 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
minfas needed.
Using a Priority Queue and HashMap for LFU Cache
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