What is the worst-case time complexity of inserting an element at the end of a s

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Question: What is the worst-case time complexity of inserting an element at the end of a singly linked list?

Options:

Correct Answer: O(n)

Solution:

Inserting at the end of a singly linked list requires traversing the entire list, resulting in O(n) time complexity.

What is the worst-case time complexity of inserting an element at the end of a singly linked list?

What is the worst-case time complexity of inserting an element at the end of a singly linked list?

Step 1: Understand what a singly linked list is. It is a data structure where each element (node) points to the next one.
Step 2: Know that to insert an element at the end of the list, you need to find the last node.
Step 3: To find the last node, you start at the head (the first node) and move to the next node until you reach a node that points to null (the end).
Step 4: Count how many nodes you have to visit to reach the last node. In the worst case, you will visit all n nodes in the list.
Step 5: Since you have to visit all n nodes to insert at the end, the time it takes is proportional to n.
Step 6: Therefore, the worst-case time complexity for inserting an element at the end of a singly linked list is O(n).

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