To reach the fifth item, follow next pointers from the head four times; inserting after the second node changes only a few links.
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A singly linked list stores each value with a pointer to the next node, allowing local insertions without shifting later values. Experiment with a small example and see each step update.
To reach the fifth item, follow next pointers from the head four times; inserting after the second node changes only a few links.
Read the related guide · · Bookmark this unique URL with Ctrl/Cmd+D.