146. LRU Cache | Leetcode Unlocked - Python

Опубликовано: 18 Май 2026
на канале: Leetcode Unlocked
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Master the classic LeetCode 146 LRU Cache problem in this step-by-step tutorial! We dive deep into designing a data structure that achieves O(1) time complexity for both get and put operations by combining a Hash Map with a Doubly Linked List. Learn exactly how the Least Recently Used eviction policy works and how to implement it efficiently using dummy nodes to handle edge cases. This video walks through the logic in Python and provides full solution code for Java, C++, and JavaScript. Perfect for software engineering interview prep!

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Solution Link:
https://leetcode.com/problems/lru-cac...

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