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Arrays let us store a list of items with fast access, but are of fixed size. Linked lists give us a data structure to store
Arrays let us store a list of items with fast access, but are of fixed size. Linked lists give us a data structure to store a list of items that grows and shrinks as the number of items changes. However, linked lists are not very efficient in two ways. They require a pointer for every data item two pointers for a doublylinked list so seem to waste space. They also can be slow relatively speaking for two reasons. First, creating and deleting nodes takes time. Second, following the pointers takes time, primarily because of how memory access works. This is related to CPU cache behaviour, which we will have a class on a bit later.
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