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What is the time complexity of deleting a node from the middle of a singly linked list?Group of answer choicesO(1)O(n log n)O(n)O(log n)

Question

What is the time complexity of deleting a node from the middle of a singly linked list?

Group of answer choices:

  • O(1)
  • O(n log n)
  • O(n)
  • O(log n)
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Solution

The time complexity of deleting a node from the middle of a singly linked list is O(n).

Here's why:

  1. In a singly linked list, you don't have a direct reference to the middle node. You have to start from the head of the list and traverse through the list until you reach the middle node.

  2. The time complexity of traversing a list is proportional to the number of elements in the list, which is O(n) where n is the number of elements in the list.

  3. Once you've found the node to delete, the deletion operation itself is O(1), because you're just changing the next pointer of the previous node to point to the next node.

  4. Therefore, the overall time complexity is dominated by the traversal, which is O(n).

This problem has been solved

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