What is the time complexity of deleting an element from a singly linked list whe

Practice Questions

Q1
What is the time complexity of deleting an element from a singly linked list when the pointer to the node is given?
  1. O(1)
  2. O(n)
  3. O(log n)
  4. O(n^2)

Questions & Step-by-Step Solutions

What is the time complexity of deleting an element from a singly linked list when the pointer to the node is given?
  • Step 1: Understand that a singly linked list consists of nodes, where each node has a value and a pointer to the next node.
  • Step 2: When you have a pointer to the node you want to delete, you can directly access that node.
  • Step 3: To delete the node, you need to copy the value from the next node into the current node you want to delete.
  • Step 4: Then, you change the pointer of the current node to skip the next node, effectively removing it from the list.
  • Step 5: Since you are directly accessing the node and not traversing the list, this operation takes a constant amount of time, which is O(1).
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