linear structure, but there are two pointers stored in the nodes of the two-way linked list, pointing to the address of the previous node and the address of the latter node, respectively. Isn"t that one-to-two?
then the two-way linked list is not a linear structure?
1. There must be a unique "first element" in the collection;The node of the
2. There must be a unique "last element" in the collection;
3. All data elements except the last element have a unique "successor";
4. All data elements except the first element have a unique "precursor".
two-way linked list has only one precursor and one successor, so it meets the requirements of the linear structure.
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