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

Practice Questions

Q1
What is the time complexity of deleting an element from a linked list?
  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 linked list?
  • Step 1: Understand what a linked list is. A linked list is a data structure where each element (node) points to the next one.
  • Step 2: Know that to delete an element, you first need to find it in the list.
  • Step 3: Realize that finding an element may require checking each node one by one, starting from the head of the list.
  • Step 4: If the element is near the end of the list or not present, you may have to check all n nodes.
  • Step 5: Therefore, in the worst case, the time it takes to delete an element is proportional to the number of nodes, which is O(n).
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