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by MeetingsBrowser
401 days ago
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Getting the pointer to that element means randomly hopping around the heap to traverse the list though. Linked lists are perfect for inserting/deleting nodes, as long as you never need to traverse the list or access any specific node. |
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Each element is: key, value, linked list node for hash table bucket, linked list node for LRU. Hash table to look up element. Element is both a member of hash table and of linked list. Linked list is used as LRU for feeling memory when needed.
LRU never traversed but often needs removal and reinsertion.