20 lines
534 B
Python
20 lines
534 B
Python
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from collections import OrderedDict
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class LRUCache:
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def __init__(self, capacity: int):
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self.cache = OrderedDict()
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self.capacity = capacity
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def get(self, key):
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if key not in self.cache:
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return None
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self.cache.move_to_end(key)
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return self.cache[key]
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def put(self, key, value):
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if key in self.cache:
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self.cache.move_to_end(key)
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elif len(self.cache) >= self.capacity:
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self.cache.popitem(last=False)
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self.cache[key] = value
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