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added python code LRU cache #30

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Dec 8, 2024
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added python code LRU cache #30

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29 changes: 29 additions & 0 deletions docs/linked-list/lru-cache.md
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Original file line number Diff line number Diff line change
Expand Up @@ -41,6 +41,7 @@ defaultValue="java"
values={[
{ label: 'Java', value: 'java', },
{ label: 'C++', value: 'cpp', },
{ label: 'Python', value: 'python', },
]
}>
<TabItem value="java">
Expand Down Expand Up @@ -238,6 +239,34 @@ private:
};
```

</TabItem>
<TabItem value="python">

```python
# LRU Cache
# OrderedDict
class LRUCache:
def __init__(self, capacity):
self.capacity = capacity
self.cache = OrderedDict()

# Time Complexity: O(1)
def get(self, key):
if key in self.cache:
value = self.cache.pop(key)
self.cache[key] = value
return value
else: return -1

# Time Complexity: O(1)
def put(self, key, value):
if key in self.cache:
self.cache.pop(key)
self.cache[key] = value
if len(self.cache) > self.capacity:
self.cache.popitem(last=False)
```

</TabItem>
</Tabs>

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