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Update hash_map_array.py
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@ -3,25 +3,6 @@
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# author: bt3gl
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class HashMap:
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def __init__(self, key_space):
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self.key_space = key_space
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self.table = [Bucket() for _ in range(self.key_space)]
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def put(self, key: int, value: int):
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hash_key = key % self.key_space
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self.table[hash_key].put(key, value)
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def get(self, key: int):
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hash_key = key % self.key_space
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return self.table[hash_key].get(key)
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def remove(self, key: int):
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hash_key = key % self.key_space
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self.table[hash_key].remove(key)
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class Bucket:
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def __init__(self):
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@ -46,7 +27,29 @@ class Bucket:
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def remove(self, key):
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for i, k in enumerate(self.bucket):
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if key == k[0]:
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# del is an O(n) operation, as we would copy all the i: elements
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# del is an O(N) operation, as we would copy all the i: elements
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# to make it O(1) we could swap the element we want to remove
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# with the last element in the bucket
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del self.bucket[i]
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class HashMap:
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def __init__(self, key_space):
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self.key_space = key_space
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self.table = [Bucket() for _ in range(self.key_space)]
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def put(self, key: int, value: int):
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hash_key = key % self.key_space
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self.table[hash_key].put(key, value)
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def get(self, key: int):
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hash_key = key % self.key_space
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return self.table[hash_key].get(key)
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def remove(self, key: int):
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hash_key = key % self.key_space
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self.table[hash_key].remove(key)
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