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A comment on Drop millions of allocations by using a linked list (2015). Parent comment

Re:Drop millions of allocations by using a linked list (2015) by dragontamer on Friday March 12, 2021 @03:36PM (#26440579)
> but that inserts in the middle necessitate looping through the linked list until you get to the correct index, which is a O(n) operation.

Not if you save the node you are working on. Inserting (when you have a node) is simply:

    NewNode = malloc(...) or new or something.
    NewNode.next = node.next
    node.next = NewNode
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Re:Drop millions of allocations by using a linked list (2015) by penetraitor69 on Friday March 12, 2021 @04:05PM (#26440916)
Oh, gotcha; I just meant in the general case.
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