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this question is about data structure and algorithms?
what is a dummy head node in linked list?
1 Answer
- Anonymous1 decade ago
In a linked list each item in the list needs to know the next or previous element, or in a double linked list both. Lets say your at the end of the list this element needs to point to something but it has nothing so we let it point to a dummy node. Also if your at the beginning of a list your element needs to point to a previous element so it would also point to a dummy node. It really holds no value or data.
I hope I havent confused you more!!