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Problem Statement:Design and implement a data structure for Least Recently Used (LRU) cache. It should support the following operations: get and put.
getContent(key) - Get the value of the key if the key exists in the cache.
insertContent(key, value) - Set or insert the value if the key is not already present. When the cache reached its capacity, it should invalidate the least recently used item before inserting a new item.
Java and Python Solution:
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