![]() But with linked list you can build another subchain, and then replace the link to it, changing the small portion of the linked list this way, keeping all the data consistent and not spending lots of memory on another copy.Ī linked list is appropriate for many use cases independent of performance considerations. With an array you could achieve atomicity by replacing the link to the array itself, but only after making a whole new copy. Upgrade to this idea are skip list and rope.Īnother useful feature of links is atomicity of small edits. If you would try to implement a text editor and rewrite the whole array when user adds another letter in the middle, it will be slower than with a linked list, if linked list remembers last edit points and most edits are a bit further than it. In other words linked lists are good for local operations. Then all of this insertions or deletions are O(1), you have all the data needed, and memory required for insert is small. If you are doing some sequential checks and deletions or insertions, you can keep this link of the last checked element. Most of benefits of linked lists requires to remember more links than just the head. For large piece of data finding this large continuous piece of memory might be hard. Arrays usually require a continuous piece of memory. Linked lists can work well even if memory is fragmented. ![]()
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