What is the difference between a singly-linked list and a doubly-linked list?

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What is the difference between a singly-linked list and a doubly-linked list?

• In what situation would you use a singly-linked list over a doubly-linked list?
• In what situation would you use a doubly-linked list over a singly-linked list?

If a node is in a linked list with N nodes, how many nodes will be traversed during a search for the node?

• Explain the best- and worst-case search scenarios.
• Explain why a singly-linked list defines a RemoveAfter() function, while a doubly-linked list defines a Remove() function.
• Could a RemoveAfter() function also be defined for a doubly-linked list? Explain why or why not.
• Could a Remove() function also be defined for a singly-linked list? Explain why or why not.