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- from collections import OrderedDict
- from typing import Any
- class LRUCache:
- def __init__(self, capacity: int):
- self.cache = OrderedDict()
- self.capacity = capacity
- def get(self, key: Any) -> Any:
- if key not in self.cache:
- return None
- else:
- self.cache.move_to_end(key) # move the key to the end of the OrderedDict
- return self.cache[key]
- def put(self, key: Any, value: Any) -> None:
- if key in self.cache:
- self.cache.move_to_end(key)
- self.cache[key] = value
- if len(self.cache) > self.capacity:
- self.cache.popitem(last=False) # pop the first item
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